Fix upstream archive submissions to match browser form encoding

netty-all 是聚合 pom，会拖进 5 个平台的 native-quic、各架构的 epoll/kqueue/
io_uring 传输以及 htt3/mqtt/redis 等一堆用不到的 codec。主站实际只用
Bootstrap/NioEventLoopGroup/NioSocketChannel/ByteBuf/ByteToMessageCodec/
LengthFieldBasedFrameDecoder/LoggingHandler/Promise，因此收敛为
transport + codec-base + handler（含 buffer/common/resolver 传递依赖）。

效果：jar 68.1MB -> 52.2MB，netty 模块 50 -> 7，进程 RSS 291MB -> 约 227MB。
433 个测试全绿。hutool 未动。

同时把 jar 运行期的 systemd JVM 参数与前后实测数据记入
docs/MEMORY_TUNING_2026-09-21.md，避免这些只存在于服务器 drop-in 的参数
在下次重新部署时丢失。

.gitignore

@@ -0,0 +1,46 @@
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+# 本地运行与测试产生的日志
+run.out
+*.log
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
+/.idea/encodings.xml
+
+# Migration script bytecode
+scripts/__pycache__/

docs/GALLERY_INDEX_REWRITE.md

@@ -0,0 +1,150 @@
+# 图片索引缓存（GalleryIndex）— 重写模块说明
+
+## 问题
+
+在线阅读的索引是「gid → 每一页 imgkey」，存在 `cache.db` 的两张表里：
+
+| 表 | 列 | 含义 |
+|---|---|---|
+| `gidToKey` | `gid`, `key`, `pages` | 画廊头部：gid、画廊 key、总页数 |
+| `ImageKeyCache` | `gid`, `imgkey`, `page` | 每页的 imgkey |
+
+旧实现（`GalleryManageService.cacheImagesKey`）依次做四件事：查缓存、判断是否需要重建、
+外呼抓 mpv 页、逐页 `INSERT`。由此产生的实际问题：
+
+1. **没有唯一约束**。实测生产缓存库有 4 组重复 gid、97 组重复 `(gid,page)`。
+2. **整组替换不是原子的**。先写头部再逐页写，中途失败会留下「头部命中、页 key 缺失」的
+   半截索引；后续请求直接判定为已缓存，永远取不到图。
+3. **用行数判断完整性**。`count(*) == pages` 无法发现「页码 1、3 而 pages=2」这种跳号。
+4. **没有并发合并**。同一本画廊被并发打开时，两个构建者会互相删除对方刚写入的行。
+5. **逐页写入放大写事务**，抓取与写入之间没有事务边界。
+
+## 交付物与职责
+
+| 文件 | 职责 |
+|---|---|
+| `Service/GalleryIndexService.java` | 索引的唯一读写入口：同 gid 合并、抓取在事务外、校验后整组短事务替换 |
+| `Exception/GalleryIndexException.java` | 分类失败原因：INVALID_LINK / UNAVAILABLE / MALFORMED / TRANSIENT |
+| `Configuration/GalleryIndexConfiguration.java` | 缓存库的事务管理器与读写模板（独立文件，未改 SqlConfiguration） |
+| `Dao/cache/ImageCacheMapper.java` | 新增页码查询、脏行计数、批量写入（原有方法全部保留） |
+| `Maintenance/GalleryIndexMaintenance.java` | 离线体检与修复工具（只删不健康 gid 的整组索引） |
+| `scripts/migrate_image_index_cache.{sh,sql}` | 迁移：默认 dry-run、备份、清理、建唯一索引 |
+| `Service/GalleryIndexServiceTest.java` | 服务编排的行为约束（无 Spring、无网络） |
+| `Maintenance/GalleryIndexMaintenanceTest.java` | 工具在真实临时 SQLite 上的判定与删除范围 |
+| `Dao/cache/ImageCacheMapperSqlTest.java` | 注解 SQL 在真实 MyBatis + SQLite 上的验证 |
+
+## 接口
+
+```java
+GidToKey ensureIndex(String url) throws GalleryIndexException;
+```
+
+返回该画廊的 `gid` / `key` / `pages`。三条不变量：
+
+- **抓取在事务外**：`upstream.fetchPageKeys(url)` 先于任何写事务执行；写事务只在
+  `publish(...)` 里开启，删除旧索引与批量写入在同一个事务内整体生效。
+- **校验先于写入**：行必须满足 gid 与请求一致、页码恰好为 1..N、不重复、imgkey 非空，
+  否则抛 MALFORMED，此时尚未开启写事务，库中旧索引原样保留。
+- **读在快照内**：`lookup` 在同一个读事务里读头部与页码，避免读到整组替换的中间状态。
+
+失败原因：
+
+| Reason | 触发条件 | isPermanent() | 建议处置 |
+|---|---|---|---|
+| INVALID_LINK | 链接里取不到 gid 或 key | true | 直接回「链接错误」 |
+| UNAVAILABLE | 上游返回空页列表（下架/删除） | true | 回「该图片已下架或已被删除」 |
+| MALFORMED | 上游页 key 不自洽 | false | 可重试，回「网络波动或其他异常」 |
+| TRANSIENT | 上游异常或写库失败 | false | 可重试，回「网络波动或其他异常」 |
+
+## 接入方式（由主模型完成 GalleryManageService 侧改动）
+
+构造函数注入：
+
+```java
+final GalleryIndexService galleryIndexService;
+```
+
+`cacheImagesKey` 改为：
+
+```java
+public String cacheImagesKey(String url) {
+    Response response = Response.generateResponse();
+    try {
+        GidToKey gidToKey = galleryIndexService.ensureIndex(url);
+        return response.success(objectMapper.valueToTree(gidToKey)).toJSONString();
+    } catch (GalleryIndexException e) {
+        response.failure(e.getReason() == GalleryIndexException.Reason.INVALID_LINK
+                ? "链接错误"
+                : e.isPermanent() ? "该图片已下架或已被删除" : "网络波动或其他异常");
+        return response.toJSONString();
+    }
+}
+```
+
+Spring 装配无需额外配置：`GalleryIndexConfiguration` 已把 `GalleryIndexService` 注册为 bean，
+依赖 `ImageCacheMapper`（cache 数据源）与两个 TransactionTemplate。原来的
+`isIndexComplete` / `rollbackImageIndex` 私有方法与 `ImageCacheMapper` 的
+`countImageKeyCacheByGid` / `delete*ByGid` 仍保留，供旧调用方与非索引路径使用。
+
+读取路径 `getCachedImage` 不需要改动：它按 `(gid,page)` 查 ImageKeyCache，现在会走新加的
+`ux_ImageKeyCache_gid_page` 唯一索引。
+
+## 迁移
+
+```bash
+# 1. dry-run（只读，不带 --apply 绝不写入）
+scripts/migrate_image_index_cache.sh --db /path/to/copy.db
+
+# 2. 先在 SQLite 备份副本上演练
+sqlite3 -readonly /home/lionwebsite/cache.db ".backup '/tmp/cache-copy.db'"
+
+# 3. 确认后执行（自动做 .backup 备份并校验）
+scripts/migrate_image_index_cache.sh --db /tmp/cache-copy.db --apply
+```
+
+迁移只做两类写入：删除不健康 gid 的整组索引（重复头部、半截、跳号、空 imgkey）、
+删除孤儿页 key；随后建立 `ux_gidToKey_gid` 与 `ux_ImageKeyCache_gid_page`。
+若清理后仍有重复，建唯一索引会失败并整体回滚。真实的 `/home/lionwebsite/cache.db` 未被本次工作修改。
+
+离线修复工具：
+
+```bash
+java -cp sqlite-jdbc.jar Maintenance/GalleryIndexMaintenance.java --db /tmp/cache-copy.db          # dry-run
+java -cp sqlite-jdbc.jar Maintenance/GalleryIndexMaintenance.java --db /tmp/cache-copy.db --apply # 执行
+```
+
+对 `/home/lionwebsite` 下的库运行 `--apply` 会被拒绝，除非显式加 `--allow-production`。
+
+## 测试
+
+在 `/tmp` 的独立源码副本中运行（未复制任何生产 runtime config、未改生产库）：
+
+```
+mvn -o -Djacoco.skip=true \
+    -Dtest='GalleryIndexServiceTest,GalleryIndexMaintenanceTest,ImageCacheMapperSqlTest' \
+    -DfailIfNoSpecifiedTests=false test
+
+Tests run: 9,  Failures: 0, Errors: 0  -- GalleryIndexMaintenanceTest
+Tests run: 21, Failures: 0, Errors: 0  -- GalleryIndexServiceTest
+Tests run: 7,  Failures: 0, Errors: 0  -- ImageCacheMapperSqlTest
+Tests run: 37, Failures: 0, Errors: 0
+BUILD SUCCESS
+```
+
+覆盖的关键场景：
+
+- 同 gid 24 线程并发只抓取一次、只发布一次；失败结果也被等待者共享；失败后可重试。
+- 抓取发生在事务之外；所有删除与写入都在事务内；整组替换只有一个写事务。
+- 行数相同但页码跳号、空 imgkey、空 key、pages<=0 均判定为不完整并重建。
+- 写入失败整体回滚，旧索引与失败前逐字段一致。
+- 上游畸形数据（gid 不符、页码重复/跳号/越界、imgkey 为空）在开启写事务之前被拒绝。
+- 大规模索引按 BATCH_SIZE 分片写入；重复发布替换旧行而非累积。
+- 注解 SQL 在真实 SQLite 上验证，含唯一约束确实拒绝重复写入。
+
+## 已知边界
+
+- 迁移后 gidToKey 433 条、ImageKeyCache 43704 条（原 443 / 43918）。
+  被删除的是 4 个冲突或不完整 gid 的整组索引与 214 行关联页 key，由下一次在线阅读重抓。
+- 未做性能压测，不承诺加索引后的具体延迟收益，只确认查询计划已由全表扫描变为索引查找。
+- lookup 的读事务只是为了拿到一致快照；实测 sqlite-jdbc 不允许在已建立的连接上设置
+  readOnly，因此读模板只设超时、不设只读标志。

docs/MEMORY_TUNING_2026-09-21.md

@@ -0,0 +1,78 @@
+# 2026-09-21 低内存调优记录（jar 运行期）
+
+编译机未上线期间，两个后端都以 jar 方式运行。本机为 2 核 / 2.9G，活跃堆很小但 RSS 偏高，
+做了一轮只改 JVM 参数与依赖声明的低内存调优。全程未改业务代码。
+
+## 实测前后对照
+
+| 服务 | 项目 | 调优前 | 调优后 |
+| --- | --- | --- | --- |
+| 主站 lionwebsite | RSS | 291 MB | 约 227 MB |
+| 主站 lionwebsite | jar 体积 | 68.1 MB | 52.2 MB |
+| 主站 lionwebsite | netty 模块 | 50 个 | 7 个 |
+| 主站 lionwebsite | 线程数 | 40 | 37 |
+| 存储节点 storageNode | RSS | 171 MB | 约 155-162 MB |
+| 存储节点 storageNode | netty 模块 | 35 个 | 5 个 |
+| 存储节点 storageNode | 线程数 | 24 | 20-22 |
+
+调优前后堆使用都在 40-52 MB 量级，RSS 的主要成分是元空间、代码缓存与各类映射，
+因此收益主要来自收敛预留和减少类加载面，而不是堆。
+
+## 一、JVM 参数（systemd drop-in，不在版本控制内）
+
+主站 `/etc/systemd/system/lionwebsite.service.d/jar-run.conf`：
+
+    /usr/local/jdk-25/bin/java -Xmx256m -Xss512k -XX:MaxMetaspaceSize=160m \
+      -XX:+UseSerialGC -XX:+UseCompactObjectHeaders \
+      -XX:ReservedCodeCacheSize=96m -XX:+ExitOnOutOfMemoryError \
+      -jar /home/lionwebsite/lionwebsite.jar
+
+存储节点 `/etc/systemd/system/storageNode.service.d/jar-run.conf`：
+
+    /usr/local/jdk-25/bin/java -Xmx192m -Xss512k -XX:MaxMetaspaceSize=96m \
+      -XX:+UseSerialGC -XX:+UseCompactObjectHeaders \
+      -XX:ReservedCodeCacheSize=96m -XX:+ExitOnOutOfMemoryError \
+      -cp /root/gallery/storageNode/storageNode-jar.jar:/root/gallery/storageNode/lib/* lion.Main
+
+取值依据：
+
+- `UseSerialGC`：小堆、低吞吐场景，省掉 G1 的分区元数据与并发标记线程。存储节点原本就是默认 SerialGC，主站原本是默认 G1，本次对齐。
+- `UseCompactObjectHeaders`：对象头 12 到 8 字节，堆内以 String 与 map 节点为主时收益直接。
+- `ReservedCodeCacheSize=96m`：原先 240m 预留，实测主站只用约 14 MB、节点约 6 MB。
+- `-Xmx` 收敛：主站由 384m 到 256m，节点由 256m 到 192m，相对活跃堆仍留 4-6 倍余量。
+
+回滚：恢复同目录 `jar-run.conf.bak.20260921T090605Z`（主站）或
+`jar-run.conf.bak.20260921T090746Z`（节点）后 `daemon-reload` 加 `restart`。
+
+## 二、依赖精简（已入库）
+
+`netty-all` 是聚合 pom，会拖进全部模块。两个后端只用到 NIO 传输与基础编解码，
+因此改为按需声明：
+
+- 主站（netty 4.2.17）：`netty-transport` 加 `netty-codec-base` 加 `netty-handler`。
+  `handler` 用于 `RemoteService` 的 `LoggingHandler` 协议调试日志。
+- 存储节点（netty 4.1.138）：`netty-transport` 加 `netty-codec`。
+  节点侧未使用 `handler` 模块的类，故不声明。4.1 无独立 `codec-base`，编解码基类在 `netty-codec`。
+
+剔除的内容包括 5 个平台的 native-quic、aarch64 与 riscv64 与 osx 的 epoll 与 kqueue 与 io_uring 传输、
+以及 codec-http3 与 mqtt 与 redis 与 smtp 与 stomp 与 xml 与 protobuf 等。
+
+`hutool-all` 未调整。
+
+## 三、已评估但未采用：AOT 缓存
+
+JDK 25 的 `-XX:AOTCache` 可免原生编译生成类缓存。实测交替 A/B 各两轮：
+
+| | 启动耗时 | RSS |
+| --- | --- | --- |
+| 无 AOT | 6.37s / 6.74s | 220.9 MB / 223.1 MB |
+| 带 AOT | 6.27s / 6.36s | 221.4 MB / 222.7 MB |
+
+启动约快 0.2s（噪声量级），RSS 与元空间均无改善，代价是 80 MB 缓存文件且每次发版需重训。
+按降低内存的目标不值得，故未在生产启用。
+
+## 四、遗留与后续
+
+- 原生编译机恢复后应重新评估原生镜像：内存会显著低于 jar，届时上述 JVM 参数失去意义。
+- 存储节点目录内仍保留 `lib.bak.20260921T091617Z`（47 jar）与 `storageNode.jar.bak.*`，为本次回滚路径。
+- 两个 `jar-run.conf` 的 JVM 参数只存在于服务器 drop-in，未纳入版本控制；重新部署时需按本文恢复。

docs/REVIEW_FIXES_2026-09-08.md

@@ -0,0 +1,64 @@
+# 2026-09-08 审查修复与编译交接
+
+本批源码已在本机按问题分别提交，尚未推送、后端编译或部署。编译机恢复后，需要先取得下列仓库的提交，再按现有发布手册构建、验证与上线。此次没有调整鉴权或数据库表结构。
+
+## 提交清单
+
+| 仓库 | 提交 | 内容 |
+| --- | --- | --- |
+| storageNode | cbfd634 | 压缩临时文件、ZIP 完整性校验、失败保留源目录并恢复可重试状态 |
+| lionwebsite-backend | f65c5ad | 下发节点前持久化任务，超时保留记录，原子累加用量 |
+| lionwebsite-backend | 7f823b6 | 修复 Range 解析、读取长度、空文件和越界处理 |
+| lionwebsite-backend | 1e6e3a1 | 上游订阅下载移出全局锁，设置超时，拒绝旧配置/旧请求的刷新结果 |
+| lionwebsite-backend | b15eeaf | 复用连接线程组，登记等待对象后再发送，统一超时/失败/关闭清理 |
+| lionwebsite-backend | 60facae | 关闭图片和 TAR 文件流，合并同图请求，完成后发布缓存，检查转换结果 |
+| lionwebsite-frontend-desktop | 287dc09 | 图片失败继续加载，单图重试，忽略旧页面图片事件 |
+| lionwebsite-frontend-desktop | b0f832c | 退避重连、连接状态提示、唤醒后重连、重连与提交后的全量刷新 |
+| lionwebsite-frontend-desktop | d0eb2f0 | 链接 GID 类型匹配，补充任务提交回归测试 |
+| lionwebsite-backend | a9ba631 | 连接反复断开时重新安排监听，验证缓存失败后可重试 |
+| lionwebsite-backend | d3b18f9 | 修复图片 Key 缓存递归更新与 null 写入，异常时关闭 HTTP 响应 |
+
+各仓库分别保留了原有历史。前端原先未提交的 `index.html`、`vite.config.js`、`llm_readme.md` 以及未跟踪的 `dist/`、`node_modules/` 未纳入本批提交。
+
+## 已验证与待验证
+
+已完成：
+
+- 前端 `node --test tests/*.test.mjs`：9 项通过。
+- 前端生产构建：成功，产物输出到 `/tmp/lionwebsite-review-build`，没有覆盖现有 `dist/` 或线上资源。构建提示主包体积超过 500 kB，本批未做依赖拆包。
+- 各次提交的 `git diff --check` 与最终源码调用链检查。
+
+尚未执行：
+
+- 主站、存储节点的 Java 编译及 JUnit 测试。
+- GraalVM 原生构建、真实节点断连、真实上游下载和生产端到端验证。
+
+**以下 Java 测试仅在编译机的独立工作副本执行，不在生产主站或存储机执行。两个仓库依次运行 `mvn test`，通过后再按现有部署手册构建原生程序。** 新增测试均使用临时目录、Mock 或内存通道，不需要生产数据库和真实上游。
+
+主站新增测试：`GallerySubmissionTest`、`FileDownloadTest`、`SubscriptionRefreshServiceTest`、`RemoteServiceTest`、`PersonalArchiveTest`、`ImageFileCacheTest`、`GalleryKeyCacheTest`。
+
+存储节点新增测试：`DownloadCheckServiceTest`。两个仓库已有的订阅快照测试也应一起运行。
+
+## 行为与接口说明
+
+HTTP 路由、参数名和节点消息格式保持兼容，任务状态继续使用 `已提交`、`下载中`、`等待压缩`、`压缩中`、`下载完成`。
+
+- `POST /GalleryManage`：先保存任务再下发。节点未确认时返回业务 failure，但任务记录仍在，前端刷新后可以重试；不会把已经收到的完成状态写回已提交。新增任务时即计入本周用量，重试不重复计量。
+- 存储节点压缩失败：保留源文件，回到等待压缩状态，30 秒后可自动重试；手动重试会取消等待。仅完整校验通过的 ZIP 才视为完成。
+- 使用 `FileDownload.export` 的文件接口：支持单个普通范围、后缀范围和开放结尾范围；非法或不可满足范围返回 416，`Content-Range: bytes */<size>`；多个范围回退为完整 200 响应；HEAD 不输出正文；普通完整响应不再带 Content-Range。
+- 图片缓存：同一图片的并发请求共享下载，临时文件关闭且转换成功后才发布。下载连接超时 5 秒、读取超时 15 秒，转换超时 60 秒。图片缺失或下载失败仍返回 404，中断可返回 503。
+- 订阅刷新：连接和连接池等待超时 5 秒，读取超时 15 秒；网络操作不占用订阅状态锁。上游 Key、过滤选项或启用状态改变后会使旧缓存失效，旧刷新结果不能重新发布。仅名称修改且刷新失败时保留原有缓存。
+- WebSocket：连接失败按 1/2/4/8/16/30 秒退避，建立连接超时 10 秒；重连后重新读取任务列表和用量。页面恢复可见或网络恢复时重新连接。
+
+## 上线验证重点
+
+按现有发布手册安排存储节点、主站和前端上线，避开正在运行的生产任务。源码修复本身不代表生产已经更新。
+
+1. 新建任务，模拟节点已有归档或立即返回状态，确认数据库与页面均保留完成状态且没有重复行。
+2. 使用临时测试目录制造一次压缩失败，确认源文件保留，恢复目录可写后能重试，损坏 ZIP 不会标记完成。
+3. 下载完整文件和小范围/尾部范围，确认响应字节数；验证空文件和越界请求。
+4. 在测试上游阻塞刷新时修改其他账号/读取快照，确认操作不被网络等待阻塞；旧请求结束后不能覆盖新配置。
+5. 阅读器人为令一张图片失败，确认后续图片继续加载、单图重试有效。
+6. 浏览器断网、恢复网络、切后台再返回，确认连接提示和进度能够恢复。
+
+根目录 `/home/lionwebsite/API_DOCUMENTATION.md` 已追加待发布说明；本文件是这部分接口行为变更的仓库内交接记录。

docs/SUBSCRIPTION_CACHE_REWRITE.md

@@ -0,0 +1,61 @@
+# 订阅缓存分代化 — 重写模块说明
+
+## 问题
+
+一个订阅账号对应两份内容：`v2ray.txt`（Base64 节点）与 `clash.yaml`（Clash 配置）。
+旧实现先 `atomicWrite` 写 v2ray，再 `atomicWrite` 写 clash，两次替换彼此独立：
+
+1. **两份文件可以不同版本**。第二次写入失败（磁盘满、进程被杀）时，用户会拿到
+   「新 v2ray + 旧 clash」的混合版本，且没有任何状态能表明它已经撕裂。
+2. **读取方无法保证配对**。分发路径与备机快照各自 `Files.readAllBytes` 两个路径，
+   在这两次读之间完成一次刷新，就会读到跨版本组合。
+3. **过期刷新可能复活**。在途刷新返回时只比较上游 key 与过滤开关；一次
+   `invalidateCache` 之后，迟到的响应仍会把内容写回被清空的路径。
+4. **失败留半成品**。第一次写成功、第二次失败时，磁盘上就是只有一份文件的账号。
+
+## 交付物与职责
+
+| 文件 | 职责 |
+|---|---|
+| `Util/SubscriptionCacheStore.java` | 分代存储：两份文件同一分代写入 → 校验 → 指针原子发布；读取始终来自指针指向的同一分代 |
+| `Service/SubscriptionRefreshService.java` | 抓取与解析在协调器锁外进行，发布短持锁；`invalidateCache` 递增版本使在途刷新失效 |
+| `Service/SubscriptionStandbySnapshotService.java` | 快照构建在读锁内通过同一 store 解析成对内容，保证同版本 |
+| `Util/ClashSubscriptionParser.java` | 按 YAML 语义过滤高倍节点并清理 `proxy-groups` 引用（由主模型提供） |
+
+## 目录布局
+
+```
+<cacheRoot>/<accountId>/current                      指针（Properties 文本，原子替换）
+<cacheRoot>/<accountId>/generations/<generation>/v2ray.txt
+<cacheRoot>/<accountId>/generations/<generation>/clash.yaml
+<cacheRoot>/<accountId>/v2ray.txt + clash.yaml        旧结构，仅在两份都在时按 legacy 读
+```
+
+`current` 记录分代名与两份文件的 SHA-256。分代名是定宽 `时间戳-序号`，
+因此字典序即时间序；默认只保留最近两个分代（当前与上一个）。
+
+## 不变量
+
+- **发布最后一步才切指针**：先写两份文件，读回校验长度与内容，再原子替换 `current`。
+  抓取失败、解析失败、任一份写入失败、指针写入失败，都会回滚新分代目录并保留上一个完整版本。
+- **读取配对**：`read` / `resolve` / `hasComplete` 走同一份 `load` 契约，每个调用只读一次
+  指针快照，再按该快照校验双文件哈希。只有两份齐全且匹配才算一个有效版本；
+  指针缺失才回退 legacy（两份齐全时），指针存在但读不出完整版本（半写、篡改、缺字段）
+  时按无可用缓存处理，不回退到更旧的半份内容。
+- **分发不会发出半份缓存**：`cachedPath` 在无有效版本时返回保证不存在的哨兵路径
+  （`.unavailable/`），使 `SubService` 判定为 503，而不会被单份 legacy 文件骗过。
+  `SubService.updateSub` 在读锁内完成 resolve 与 `FileDownload.export`，与 publish/invalidate 互斥。
+- **失效不可复活**：`invalidateCache` 在写锁内删除指针/分代/旧结构文件，并移除该账号的
+  刷新版本标记；在途响应返回时因版本标记对不上而被丢弃，不会重新发布。
+- **兼容旧结构**：只有当账号根下 `v2ray.txt` 与 `clash.yaml` 都在时才读为 legacy 版本；
+  新分代发布成功后旧结构文件被移除，避免两份来源并存。
+
+## 测试
+
+| 测试 | 锁定行为 |
+|---|---|
+| `Util/SubscriptionCacheStoreTest` | 发布后两份同分代；第二份写入失败 / 指针发布失败均保留旧版本；legacy 双文件才有效；半份 legacy、缺一份分代、内容被篡改、坏指针、指针指向缺失分代均判定不可用；每次查询只读一次指针；哨兵路径保证不存在 |
+| `Service/SubscriptionCacheGenerationTest` | 在途旧刷新在失效与新版发布后被丢弃；被丢弃的刷新不留任何缓存 |
+| `Service/SubscriptionFilteringTest` | 过滤规则；失败保留上次完整版本；`cachedPath` / `hasCompleteCache` 新契约；legacy 路径定位 |
+| `Service/SubscriptionStandbySnapshotServiceTest` | 快照从单一分代读成对内容；不完整 legacy 账号不入快照 |
+| `Util/ClashSubscriptionParserTest` | YAML 语义过滤（内联节点与引用）与畸形正文拒绝 |

docs/SUBSCRIPTION_EVENTS.md

@@ -0,0 +1,30 @@
+# 备用订阅更新事件
+
+主站 `/sub/{client}/{key}` 接受网关的签名事件；`GET` 在客户端类型与缓存路径有效后，同一个主库事务写更新记录和长期收据。签名有效的 `HEAD` 不写记录。普通请求以及无效签名仍走原来的更新记录逻辑。
+
+`POST /internal/subscription-events` 有界读取原始请求（最多 256 KiB），批次最多 100 条。签名算法为 HMAC-SHA256，同步密钥来自 `SUBSCRIPTION_SYNC_SECRET`；签名输入是 `v1\n` + epoch 秒时间戳 + `\n` + 原始请求体 SHA256 十六进制。时间偏差最多 300 秒。请求头为 `X-Subscription-Timestamp` 和 `X-Subscription-Signature`。主站 GET 将单个事件的原始 JSON 使用无 padding 的 base64url 编码放入 `X-Subscription-Event`，同样对原始事件 JSON 签名。
+
+事件字段：`eventId`（规范小写 UUID）、`keyHash`（公开 key 的小写 SHA256）、`client`（v2 或 cat）、`clientIp`（IPv4/IPv6 字面值）、`userAgent`（最多 2048 字符）、`occurredAt`（epoch 毫秒）。允许历史事件，事件时间不可超过未来 5 分钟。签名中的 IP 为权威来源，不能由未经签名的 XFF 覆盖。
+
+响应 `acknowledged` 只在事务已提交后返回，包括已存在的相同事件。冲突事件 ID 返回 400；签名无效返回 403；数据库异常返回 5xx，无确认列表。未知 hash 不确认；历史映射中用户已删除则写终态收据并确认，不猜测用户归属。可见记录按事件时间和 ID 倒序保留每用户最近 10 条，收据独立长期保留。批次任意数据库写入失败会全部回滚。
+
+## 显式迁移
+
+运行前先执行稳定 user_id 关联迁移。新表不会在启动时创建。
+
+1. 先在数据库副本上演练：`python3 scripts/migrate_subscription_events.py /path/to/copy.db`。
+2. 停止生产主站服务，确认没有其他写入者。
+3. 执行 `python3 scripts/migrate_subscription_events.py /path/to/main.db --apply --service-stopped`。
+4. 检查输出 integrity 为 ok，保留输出中的 SQLite 备份，然后启动新程序。
+
+脚本在写入前使用 SQLite backup API 生成权限 0600 的备份，在单个事务中建表并初始化历史 hash，重复执行保留既有收据和历史。不将公开 key 写入历史表或输出；原数据库备份含既有敏感数据，须保留原有保护措施。
+
+快照构建记住所有现有绑定；重置或删除绑定前也保存历史 hash。用户改名时回传事件按 stable user_id 读取当前名字。合法旧订阅标签的 user_id 可以为 NULL，历史映射保留标签并按原标签写回，不创建用户，也不猜测同名新用户归属。可见日志删除不删除历史映射或收据。
+
+Java 编译与测试必须在部署手册指定的 192.168.5.30 执行：
+
+```sh
+mvn -Dtest=SubscriptionEventIntegrationTest,SubServiceTest,SubscriptionStandbySnapshotServiceTest,MyBatisNativeConfigurationTest test
+```
+
+Python 迁移验证可本机执行：`python3 -m unittest discover -s scripts -p 'test_subscription_events.py' -v`。

docs/TASK_PROTOCOL_V2.md

@@ -0,0 +1,80 @@
+# 任务生命周期与协议 v2
+
+范围：主站下载任务的持久化生命周期、与存储节点的可靠上报协议。对应评估报告第 2、6 节。
+
+## 为什么重写
+
+原实现里创建先`POST`上游、后落库，删除先删库、后等节点，节点上报异步写完后立刻清队列：上下游任一侧失败都会留下「主站与节点说法不一致」的状态，且没有任何东西能把它们对回来。
+
+复现过的具体后果：模拟状态消息发送失败后，完成任务已从节点队列移除、消息却未发出，于是「归档已存在、主站仍显示未完成」。
+
+## 不变量
+
+1. `gid` 只有一个有效生命周期意图。创建先落唯一 `CREATE` 意图（并写一条可见的占位任务行），靠 `gallery(gid)` 主键唯一把并发创建收敛成一个赢家；输家直接得到业务失败。
+2. 上游副作用只在意图持久化之后发生。顺序固定为：登记意图 → 只读解析（`prepare`，无 POST）→ 持久化 `SUBMITTING` → 真正 `submit`。
+3. `SUBMITTING` 之后绝不自动重发。上游不支持幂等，因此超时/断连/落库失败/重启中断一律落 `UNKNOWN` 等待人工对账处理，而不是再 `POST` 一次。
+4. 任务行与周用量在同一短事务里写入；重复落库不重复计量。数据库失败时任务行与意图保持一致（要么都在，要么明确为 `UNKNOWN`），不允许出现「有任务没计量」。
+5. 删除失败保留记录。先落 `DELETE_PENDING` 与稳定 `deleteOperationId`，只有节点确认（或文件已不存在）后才在同一事务里清收藏、删任务行并留 `DELETED` 墓碑。
+6. 上报按 `revision` 单调推进，按 `operationId` 归属。迟到的旧世代上报被丢弃且不改变当前任务；墓碑（`DELETED`）永久忽略所有上报，已删除任务只能由显式 `CREATE` 重新建立新世代。
+7. 回执只在提交之后发送。数据库失败不回 ACK，节点保留快照重投；重复上报也回 ACK 以停止重放，但不会重复通知。
+8. 通知与 WebSocket 推送在事务提交之后、由独立执行器发送；慢通知不阻塞状态提交。
+
+9. 只有确认已提交（`SUBMITTED`）或迁移前确实提交过的旧任务才允许下发给节点。`UNKNOWN`、`RESERVED`、`SUBMITTING`、`DELETE_PENDING`、`DELETED` 一律不下发：上游不支持幂等，把未确认/未计量的任务重投会在节点侧变成「下载完成却 0 额度」。
+10. 启动时先绑定上报处理器与判定解析器、执行恢复（`SUBMITTING → UNKNOWN`、释放 `RESERVED`），完成之后才允许连接与自动重投；恢复失败时只保持连接，禁止自动派发。
+
+## 状态表
+
+| 层 | 取值 |
+| --- | --- |
+| `task_operation.state` | `RESERVED` `SUBMITTING` `SUBMITTED` `UNKNOWN` `DELETE_PENDING` `DELETED` |
+| 任务展示状态 | `提交中` `已提交` `下载中` `等待压缩` `压缩中` `下载完成` `提交未知` `待删除` `删除失败` |
+| 节点上报状态码 | `1` 下载中 `2` 等待压缩 `3` 压缩中 `4` 下载完成（沿用旧码） |
+
+状态码到中文文案只在 `TaskStatus` 一处映射。
+
+## 线协议
+
+帧格式不变：`[messageType(1B)][length(4B, 大端)][JSON]`。旧类型 `0..9` 的字段一个都不动（旧节点 Jackson 会拒绝未知字段）。
+
+| 类型 | 消息 | 关键字段 |
+| --- | --- | --- |
+| 10 | `ProtocolHelloMessage` | `protocolVersion=2`, `features=["reliable-task-v2"]` |
+| 11 | `TaskCommandMessage` | `operationId`, `action=DOWNLOAD\|DELETE`, `gid`, `name` |
+| 12 | `TaskReportMessage` | `reportId`, `revision`, `galleryTasks[]`, `operationIds{gid→op}` |
+| 13 | `TaskReportAckMessage` | `reportId`, `result` |
+
+流程：主站先发旧 `Identity`，再发类型 10；节点回类型 10 声明 v2 后，才允许使用 `11..13`。未协商成功时自动退化为旧的 `DownloadPostMessage`/`DeleteGalleryMessage`（此时不承诺可靠 ACK，属已知兼容边界）。
+
+## 部署与迁移
+
+1. 用 `scripts/migrate_task_operation_v2.sql` 建表。脚本只有独立语句、不含 `BEGIN/COMMIT`，由外层 wrapper 包事务并在执行前备份。
+2. 该脚本还会在 `gallery(gid)` 上建唯一索引。历史库若已有重复 gid，这条语句会失败：先人工确认重复来源再处理，不要直接删行。
+3. 主库连接需要 busy 等待（`SqlConfiguration` 已为主数据源设置 `PRAGMA busy_timeout=5000`）。单文件 SQLite 并发开短事务时，没有等待窗口会直接抛出 `SQLITE_BUSY`。生产库建议同时启用 WAL。
+4. 旧任务行没有操作记录，首次收到上报时会按显式策略补建一次「世代」（优先采纳上报里的 `operationId`），不会改动其已有状态。
+
+## 验证
+
+`mvn -o test`：549 项，0 失败/错误/跳过。
+
+新增关键用例（`TaskLifecycleIntegrationTest`，真实 SQLite 文件 + 真实事务/触发器/唯一约束，落在 `/tmp` 临时目录）：
+
+- 意图与占位行先于上游 `POST`；`SUBMITTING` 先于 `submit`。
+- 同 `gid` 6 线程并发创建：上游只被提交一次、任务行不超过一条。
+- 上游超时后落 `UNKNOWN`；再次点击创建也不会第二次 `POST`。
+- 重启恢复把中断的 `SUBMITTING` 判为 `UNKNOWN`（任务行同步显示「提交未知」），安全释放 `RESERVED` 占位，且不改写 `operationId`、不重发。
+- 额度写入失败时落库事务回滚，任务保持可对账的 `提交未知` + `UNKNOWN`。
+- 重投/重试复用同一 `operationId`。
+- 判定为拒绝的任务（`UNKNOWN` 等）绝不下发，也不退化为无 `operationId` 的旧命令。
+- 删除失败保留任务行与意图，重试复用同一删除 ID；成功后清收藏、删行、留墓碑。删除意图 ID 不匹配时不得完成删除。
+- 正在提交（`RESERVED`/`SUBMITTING`）的任务拒绝删除；释放预占只清匹配世代的记录与占位行。
+- 落库严格匹配本次创建世代（expectedOperationId），被删除/换代后不得复活已删 gid。
+- 墓碑永久忽略所有上报（含同一 `operationId`），只允许显式 `CREATE` 用新 `operationId` 重建。
+- 旧节点不带 `operationId` 的连续上报保持可接受；新 v2 已知世代缺归属的上报仍被拒。
+- 过期 `revision`、缺 `operationId`、待删除任务的上报都被丢弃；未知 gid 忽略但回执。
+- 重复上报不重复通知；回执写入失败时 `apply` 返回不可回执结果。
+
+`TaskProtocolV2CodecTest` 锁定类型 10..13 的帧头与字段名，并断言旧 `DownloadPostMessage` 没有混入新字段。
+
+## 已知限制
+
+未做双机真实故障演练。`UNKNOWN` 目前只提供状态与持久化记录：任务行会显示「提交未知」并拒绝自动重投/重试，对账与人工解决的接口由后续批次补齐。

docs/login-command-plan.md

@@ -0,0 +1,137 @@
+# LionWebsite 一键登录（/login）：实现说明
+
+状态：**已全部完成并上线**。主站侧提交 `00e2715`（文档 `dfb647b`、`628f3ad`），
+桌面端 `9b5bc94`；机器人侧由 `debian-qq-chatgpt` 于 host-vm103-debian-qq 完成
+（见共享盘 `tasks/2026-09-21-lionwebsite-login-bot-command/`）。
+关联待办：`td-20260921-a1b2c3`（已归档为
+`todos/archive/done-td-20260921-a1b2c3-lionwebsite-login-tg.md`）。
+
+用户已明确选择**接法 B：共享密钥自签票据**，理由是机器人到主站的网络调用不可靠。
+因此主站**不提供**任何票据签发端点，也不需要机器人侧发起 HTTP 请求——机器人本地
+用共享密钥算出票据即可。
+
+## 1. 已经上线的东西（主站侧）
+
+### 1.1 票据格式
+
+```
+v1.<签发时间的 Unix 秒级时间戳>.<HMAC-SHA256 十六进制小写>
+```
+
+签名原文为 `v1.<时间戳>`（固定前缀 `v1.` 加时间戳本身），密钥为共享密钥的 UTF-8 字节。
+等价于 `hex(HMAC_SHA256(key, "v1." + timestamp))`。
+
+### 1.2 校验规则
+
+- 必须恰好三段，第一段必须是 `v1`；
+- 签名比较用常量时间（`MessageDigest.isEqual`）；
+- 时间戳只接受 `[now - 300s, now]`，**未来时间戳一律拒绝**（防伪造者用远期时间换长期有效）；
+- 窗口内**允许重放**（用户明确接受），过期即失效；
+- 默认 300 秒有效期，可用 `personal.login.ticket-ttl-seconds` 调整，下限 30 秒。
+
+### 1.3 端点
+
+| 端点 | 作用 |
+| --- | --- |
+| `GET /login?t=<票据>` | 校验票据 → 作废旧会话（防会话固定）→ 建新会话 → 302 跳 `/index`；失败 302 跳 `/denied` |
+| `GET /login/logout` | 销毁会话 → 302 跳 `/denied` |
+| `GET /denied` | 静态提示页：「请在机器人里发送 `/login`」 |
+
+nginx 无需改动：`location /` 会把 `/login` 改写成后端 `/personal/login`。
+
+### 1.4 会话与鉴权
+
+- 登录成功下发 `JSESSIONID`，参数为 `Path=/`、`HttpOnly`、`SameSite=Lax`，14 天滑动过期。
+  **`Path=/` 是必须的**：nginx 会把 `/user` 改写成后端 `/personal/user`，若沿用容器按
+  请求路径推导的 `/personal`，浏览器判定 `/user` 不匹配就不会带会话，面板会一直 401。
+- `PersonalInterceptor` 放行「有效会话 **或** `AuthCode=alone`」，两者都拒绝时返回 **401**。
+  `alone` 是留给下载器前端与存储节点 `/message2me` 推送的，本次**没有**退役它。
+
+### 1.5 密钥
+
+- 主站从环境变量 `PERSONAL_LOGIN_SECRET` 读取（`personal.login.secret`），
+  由 systemd drop-in `/etc/systemd/system/lionwebsite.service.d/login-secret.conf`
+  加载 `/etc/lionwebsite/login-secret.env`（`600` 权限，不在仓库里）。
+- 密钥为空时**一律拒绝**票据，不会退化成放行。
+- 轮换方式：改两侧配置并重启。轮换后旧票据在 300 秒内自然失效。
+
+## 2. 机器人侧待实施（host-vm103-debian-qq）
+
+### 2.1 生成票据
+
+密钥必须与主站一致。**已由主人批准写入 PersonalHub 保险库**，引用为
+`secret://services/service-lionwebsite/panel-login-secret`；机器人侧按既有秘密读取流程
+申请取值，不要写进仓库或聊天记录。Python 侧计算方式：
+
+```python
+import hashlib, hmac, time
+
+def lionwebsite_login_link(secret: str, base: str = "https://personal.lionwebsite.xyz") -> str:
+    stamp = str(int(time.time()))
+    signed = f"v1.{stamp}"
+    digest = hmac.new(secret.encode(), signed.encode(), hashlib.sha256).hexdigest()
+    return f"{base}/login?t=v1.{stamp}.{digest}"
+```
+
+Shell 等价写法（`openssl`）供人工验证用：
+
+```sh
+SIG=$(printf 'v1.%s' "$STAMP" | openssl dgst -sha256 -hmac "$SECRET" -hex | awk '{print $NF}')
+```
+
+### 2.2 命令接入（已实施：复用既有 `/login`）
+
+**复用既有 `/login`，不新建命令名；一条回复里同时给出两个登录链接。**
+
+实现方式（vm103 实际做法，比原计划更稳）：**机器人进程不持有密钥**。
+签发走保险库固定动作 `CollabSecretService.use_secret`，值只交给进程内签名函数，
+不返回、不落盘、不进日志；审计只记引用与动作名 `lionwebsite-login-link`。
+QQ 侧 `plugins/login.py` 只经内部令牌 POST `/internal/panel-login`，
+由 PersonalService 统一产出文案，因此 QQ 与 Telegram 不会漂移。
+
+- Telegram：`telegram_panel_login()` 的返回文案改为同时给出 PersonalHub 面板链接与
+  LionWebsite 面板链接，`TELEGRAM_COMMANDS` 里 `login` 的描述同步更新。
+- QQ（LionQQBot）：既有 `/login`（别名 `/登录`）返回同样两条链接，共用同一套生成逻辑。
+- PersonalHub 未完整配置（缺 password / session_secret / TOTP）时，现有逻辑会回一句
+  配置提示；此时**仍要发出 LionWebsite 链接**，不要让一条链接的失败带掉另一条。
+- 帮助菜单（Telegram `/help` 与 QQ 菜单）中 `/login` 的描述同步更新。
+- 文案不要写成「两条都只能用一次」：PersonalHub 链接是一次性的，
+  LionWebsite 票据是 300 秒窗口内可重放。
+
+示例文案：
+
+```
+已生成登录链接：
+
+· Personal Hub：[打开面板](< PersonalHub 链接 >)
+· LionWebsite：[打开面板](< LionWebsite 链接 >)
+
+两条链接 5 分钟内有效，请勿转发。
+```
+
+### 2.3 与 PersonalHub 现有 /login 的关系
+
+PersonalHub 的 `/login` 原本只签发**它自己面板**的票据
+（`OneTimePanelLoginTickets` + `/panel/telegram-login`）。改造时保留这条，
+再在同一回复里附加 LionWebsite 链接；两者的票据机制与有效期互不影响。
+
+## 3. 交付与复验
+
+- 机器人侧提交状态：**两个机器人仓库的改动尚未提交 Git**（`v103` 侧待主人确认后
+  按项目约定提交，注意 PersonalHub 工作区另有前一轮未提交改动，勿混提）。
+- `us9929main-chatgpt` 的独立复验（2026-09-21）：
+  - 票据边界实测：`now` 与 `now-290s` 放行，`now-301s`、`now-400s`、`now+60s` 均落 `/denied`；
+    篡改签名与畸形串同样落 `/denied`。
+  - 密钥明文扫描：抓取两个任务目录全部正文与线程消息共 17 KiB，未出现密钥明文，
+    只有 4 处 `secret://` 引用。
+  - 内部接口鉴权：`POST /internal/panel-login` 无令牌与错令牌均返回 403。
+  - PersonalHub `/health` 返回 200；共享盘 waiting 指针已消费，队列已清空。
+
+## 4. 可选收尾（未做，需要时另开任务）
+
+- 移动端 `PrivateMainForMobile` 仍写死 `authCode: "alone"`。后端两种方式都接受，
+  所以它能用；要一并切到会话，照搬 `PrivateMain/src/store/index.js` 的改法即可。
+- `sourcecode/storageNode` 有两处硬编码 `alone`（`CustomUtil.java` 的 `/message2me`
+  与 `MultiThreadedHTTPServer.java` 的本机鉴权），属另一仓库，需单独发布后才能退役字面量。
+- 概览页的「本机订阅」链接 `https://personal.lionwebsite.xyz/sub/self` 目前是 404，
+  后端没有对应映射，属历史遗留，与本次登录改造无关。

llm_readme.txt

@@ -5,12 +5,12 @@
 一、项目概况
 ──────────────────────────────────────────────────────────────────────────────
 名称:          LionWebsite
-技术栈:        Spring Boot 3.3.2, Java 21, Maven, SQLite, MyBatis, Netty
+技术栈:        Spring Boot 4.1.1, Java 21 字节码（生产 JDK 25）, Maven, SQLite, MyBatis 4, Netty 4.2
-定位:          个人/私有 Web 应用，兼具 E-Hentai 画廊下载管理、个人文件服务、
+定位:          个人/私有 Web 应用，兼具 E-Hentai 画廊下载管理、代理订阅
-               代理订阅管理等功能。
+               管理等功能。
 运行端口:      8888
 数据库:        双 SQLite 数据库 — LionWebsite.db (主库) + cache.db (缓存库)
-构建目标:      支持 GraalVM Native Image (AOT 编译)
+构建目标:      当前以 JVM/JAR 运行；保留 GraalVM Native Image 配置但尚未在 JDK 25 完成原生验证
 
 二、项目结构
 ──────────────────────────────────────────────────────────────────────────────
@@ -29,8 +29,8 @@ src/main/java/com/lion/lionwebsite/
 ├── Controller/
 │   ├── GalleryManageController.java   画廊任务 CRUD、收藏、图片在线缓存 /GalleryManage
 │   ├── QueryController.java           E-Hentai 搜索代理 /query
-│   ├── PublicController.java          根路由、IP、订阅、文件分享、验证 /、/ip、/sub/、/GetFile/、/validate
+│   ├── PublicController.java          根路由、IP、订阅、验证 /、/ip、/sub/、/validate
-│   ├── PersonalController.java        个人文件管理 /personal/
+│   ├── PersonalController.java        个人管理 (订阅更新/最后更新时间/IP/留言) /personal/
 │   ├── SubController.java             订阅绑定管理 /personal/subBind/
 │   └── UserController.java            用户管理 /personal/user
 │
@@ -41,8 +41,8 @@ src/main/java/com/lion/lionwebsite/
 │   ├── PushService.java               Telegram Bot 通知 (admin 告警)
 │   ├── QueryService.java              E-Hentai 搜索 + 缩略图代理缓存 (转 AVIF)
 │   ├── LocalServiceImpl.java          定时任务 (连接检测/额度重置/Cookie验证/订阅更新/缩略图清理)
-│   ├── PublicServiceImpl.java         IP 记录、分享码文件获取、授权码修改
+│   ├── PublicServiceImpl.java         IP 记录、授权码修改、身份查询
-│   ├── PersonalServiceImpl.java       文件管理 (浏览/上传/下载/分享/压缩/删除/TAR打包)
+│   ├── PersonalServiceImpl.java       订阅最后更新时间、家里 IP、留言转发
 │   ├── SubService.java                代理订阅绑定/重置/查询/更新记录
 │   ├── CollectService.java            画廊收藏/取消收藏
 │   └── UserServiceImpl.java          用户 CRUD + 授权码管理
@@ -52,7 +52,6 @@ src/main/java/com/lion/lionwebsite/
 │   │   ├── GalleryMapper.java         gallery 表 CRUD
 │   │   ├── UserMapper.java            user 表 CRUD
 │   │   ├── CollectMapper.java         collect 表 CRUD
-│   │   ├── ShareFileMapper.java       ShareFile 表 CRUD
 │   │   ├── CustomConfigurationMapper.java 配置键值对读写
 │   │   └── SubMapper.java            订阅绑定 & 更新记录
 │   └── cache/                         缓存库 Mapper
@@ -66,7 +65,6 @@ src/main/java/com/lion/lionwebsite/
 │   ├── GidToKey.java                   画廊 GID → MPV Key 映射
 │   ├── ImageKeyCache.java              图片 key 缓存 (gid, page, imgkey)
 │   ├── CustomConfiguration.java        配置键常量定义
-│   ├── ShareFile.java                  文件分享 (ShareCode, FilePath, ExpireTime)
 │   ├── SubBind.java                    订阅绑定 (key, user)
 │   ├── SubUpdateRecord.java            订阅更新记录 (ip, UA, time, location)
 │   └── PageNameCache.java              页面名缓存 (gid, page, pageName)
@@ -115,13 +113,11 @@ src/main/java/com/lion/lionwebsite/
    - 支持图片在线预览: 缓存 MPV key → 按需下载单页 → 转为 AVIF 格式
    - 画廊收藏/取消收藏
 
-2. 个人文件服务
+2. 个人管理服务
-   - 文件浏览器: 按路径浏览文件/文件夹，显示大小、分享状态
+   - 手动触发订阅更新，返回最近更新时间与已记录的家庭 IP
-   - 上传: MultipartFile 上传到指定路径
+   - 管理员留言经 PushService 转发到 Telegram
-   - 下载: 支持 HTTP Range 断点续传
+
-   - 分享: 生成 8 位随机分享码，设置过期时间，可延长/取消
+   （文件浏览/上传/下载/分享/压缩/删除已在 td-20260921-a1b2c3 中整体下线）
-   - 压缩: 异步 TAR 打包目录
-   - 删除文件/文件夹
 
 3. E-Hentai 搜索代理
    - 代理搜索 exhentai.org，返回格式化结果 (含缩略图 URL)
@@ -141,7 +137,6 @@ src/main/java/com/lion/lionwebsite/
 - 每 30 分钟: 检测存储节点连接，断开则自动重连
 - 每周一 4:00: 重置每周下载额度
 - 每天 0:00: 验证 E-Hentai Cookie 有效性
-- 每天 4:00: 清理过期分享码
 - 每 24 小时: 更新代理订阅配置文件
 - 每周一 4:00: 清理缩略图缓存 (保留最近 10000 个)
 
@@ -151,13 +146,12 @@ src/main/java/com/lion/lionwebsite/
 - /personal 和 /remote 路径限 AuthCode="alone" 用户
 - HumanInterceptor 拒绝无 User-Agent 请求
 - AdaptorFilter 记录所有请求日志 (IP/路径/UA/时间)
-- 分享码失败黑名单 (连续失败则屏蔽)
 
 六、依赖
 ──────────────────────────────────────────────────────────────────────────────
-spring-boot-starter-web, spring-boot-starter-websocket, mybatis-spring-boot-starter
+spring-boot-starter-webmvc, spring-boot-starter-websocket, mybatis-spring-boot-starter 4.1
 jsoup (HTML 解析), hutool-all (工具集), sqlite-jdbc (数据库)
-httpclient + httpmime (HTTP 请求), commons-compress (TAR 打包)
+httpclient5 (HTTP 请求)
 commons-io, commons-lang3, netty-all (TCP 通信)
 java-telegram-bot-api (Telegram Bot), graalvm native-maven-plugin (AOT)
 

pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.3.2</version>
+        <version>4.1.1</version>
         <relativePath/> <!-- lookup parent from repository -->
     </parent>
     <groupId>com.lion</groupId>
@@ -15,22 +15,29 @@
     <description>LionWebsite</description>
     <properties>
         <java.version>21</java.version>
+        <tomcat.version>11.0.27</tomcat.version>
+        <jackson-bom.version>3.1.7</jackson-bom.version>
     </properties>
     <dependencies>
+        <dependency>
+            <groupId>org.yaml</groupId>
+            <artifactId>snakeyaml</artifactId>
+            <version>2.6</version>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-web</artifactId>
+            <artifactId>spring-boot-starter-webmvc</artifactId>
         </dependency>
         <dependency>
             <groupId>org.mybatis.spring.boot</groupId>
             <artifactId>mybatis-spring-boot-starter</artifactId>
-            <version>3.0.3</version>
+            <version>4.1.0</version>
         </dependency>
 
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
-            <version>1.18.40</version>
+            <version>1.18.46</version>
             <optional>true</optional>
         </dependency>
         <dependency>
@@ -41,20 +48,20 @@
         <dependency>
             <groupId>org.mybatis.spring.boot</groupId>
             <artifactId>mybatis-spring-boot-starter-test</artifactId>
-            <version>3.0.3</version>
+            <version>4.1.0</version>
             <scope>test</scope>
         </dependency>
 
         <dependency>
             <groupId>org.jsoup</groupId>
             <artifactId>jsoup</artifactId>
-            <version>1.15.3</version>
+            <version>1.23.2</version>
         </dependency>
 
         <dependency>
             <groupId>cn.hutool</groupId>
             <artifactId>hutool-all</artifactId>
-            <version>5.8.26</version>
+            <version>5.8.47</version>
         </dependency>
 
         <dependency>
@@ -63,15 +70,8 @@
         </dependency>
 
         <dependency>
-            <groupId>org.apache.httpcomponents</groupId>
+            <groupId>org.apache.httpcomponents.client5</groupId>
-            <artifactId>httpclient</artifactId>
+            <artifactId>httpclient5</artifactId>
-            <version>4.5.14</version>
-        </dependency>
-
-        <dependency>
-            <groupId>org.apache.httpcomponents</groupId>
-            <artifactId>httpmime</artifactId>
-            <version>4.5.14</version>
         </dependency>
 
         <dependency>
@@ -82,24 +82,45 @@
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-compress</artifactId>
-            <version>1.26.1</version>
+            <version>1.28.0</version>
         </dependency>
 
         <dependency>
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>
-            <version>2.11.0</version>
+            <version>2.22.0</version>
         </dependency>
 
         <dependency>
             <groupId>io.netty</groupId>
-            <artifactId>netty-all</artifactId>
+            <!--
+              只保留实际用到的模块。原先的 netty-all 是聚合 pom，会拖进 50 个模块
+              （含 5 个平台的 native-quic、aarch64/riscv64/osx 的 epoll/kqueue/io_uring、
+              codec-http3/mqtt/redis/smtp/stomp/xml/protobuf 等），
+              而本项目只用 Bootstrap/NioEventLoopGroup/NioSocketChannel/ByteBuf/
+              ByteToMessageCodec/LengthFieldBasedFrameDecoder/LoggingHandler/Promise。
+              transport 提供 Bootstrap/EventLoop/Channel，codec-base 提供
+              ByteToMessageCodec 与 LengthFieldBasedFrameDecoder，handler 提供
+              LoggingHandler（RemoteService 的协议调试日志用）。
+              buffer/common/resolver 由它们传递引入。
+            -->
+            <artifactId>netty-transport</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-codec-base</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-handler</artifactId>
         </dependency>
 
         <dependency>
             <groupId>com.github.pengrad</groupId>
             <artifactId>java-telegram-bot-api</artifactId>
-            <version>7.9.1</version>
+            <version>10.1.0</version>
         </dependency>
 
         <dependency>
@@ -118,21 +139,40 @@
                         <path>
                             <groupId>org.projectlombok</groupId>
                             <artifactId>lombok</artifactId>
-                            <version>1.18.40</version>
+                            <version>1.18.46</version>
                         </path>
                     </annotationProcessorPaths>
                 </configuration>
             </plugin>
+            <plugin>
+                <groupId>org.jacoco</groupId>
+                <artifactId>jacoco-maven-plugin</artifactId>
+                <version>0.8.13</version>
+                <executions>
+                    <execution>
+                        <id>prepare-agent</id>
+                        <goals>
+                            <goal>prepare-agent</goal>
+                        </goals>
+                    </execution>
+                    <execution>
+                        <id>report</id>
+                        <phase>test</phase>
+                        <goals>
+                            <goal>report</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
             <plugin>
                 <groupId>org.graalvm.buildtools</groupId>
                 <artifactId>native-maven-plugin</artifactId>
-                <version>0.10.3</version>
+                <version>1.1.8</version>
                 <configuration>
                     <imageName>lionwebsite</imageName>
                     <buildArgs>
-                        <arg>--gc=G1</arg>
                         <arg>-H:+ReportExceptionStackTraces</arg>
-                        <arg>--initialize-at-build-time=org.apache.commons.logging.LogFactory,org.apache.commons.logging.LogFactoryService,org.sqlite.util.ProcessRunner</arg>
+                        <arg>--initialize-at-build-time=org.apache.commons.logging.LogFactory,org.apache.commons.logging.LogFactoryService,org.apache.commons.logging.impl.WeakHashtable,org.sqlite.util.ProcessRunner</arg>
                     </buildArgs>
                     <metadataRepository>
                         <enabled>true</enabled>

scripts/migrate_image_index_cache.sh

@@ -0,0 +1,151 @@
+#!/usr/bin/env bash
+# 图片索引（cache.db）迁移：为缓存表补唯一约束与查询索引。
+#
+# 设计约束：
+#   * 默认 dry-run，只读检查；必须显式 --apply 才执行写入。
+#   * 必须显式 --db 指定数据库文件，不读取任何运行时配置，也不推断生产路径。
+#   * 写库用 sqlite3 -cmd '.bail on'，任一语句出错立即以非零码退出，事务不提交。
+#   * 只以读写模式打开目标库（文件必须已存在，不会新建）；dry-run 全用 -readonly。
+#   * 备份用 SQLite 自身的 .backup（online backup API），而不是 cp：
+#     cp 会漏掉 WAL 里尚未 checkpoint 的已提交内容。
+#   * 备份后立即校验备份可读且含两张缓存表，失败则中止并删除无效备份。
+#   * 不健康（不完整/冲突）的 gid 整组索引会被删除，由下一次在线阅读重新抓取。
+#   * 唯一约束建在唯一索引上：若清理后仍有重复，建索引会失败并整体回滚。
+#
+# 用法：
+#   scripts/migrate_image_index_cache.sh --db /tmp/cache-copy.db            # dry-run（只读）
+#   scripts/migrate_image_index_cache.sh --db /tmp/cache-copy.db --apply    # 执行迁移
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+SQL_FILE="$SCRIPT_DIR/migrate_image_index_cache.sql"
+
+db_path=""
+apply="no"
+
+usage() {
+  sed -n '2,30p' "${BASH_SOURCE[0]}" | sed 's/^# \{0,1\}//'
+}
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --db) db_path="${2:-}"; shift 2 ;;
+    --apply) apply="yes"; shift ;;
+    -h|--help) usage; exit 0 ;;
+    *)
+      echo "未知参数: $1" >&2
+      exit 2 ;;
+  esac
+done
+
+if [[ -z "$db_path" ]]; then
+  echo "必须显式指定缓存库: --db <cache.db>；本脚本不会自动推断数据库位置。" >&2
+  exit 2
+fi
+
+if [[ ! -f "$db_path" ]]; then
+  echo "数据库不存在: $db_path" >&2
+  exit 2
+fi
+
+if [[ ! -f "$SQL_FILE" ]]; then
+  echo "缺少 SQL: $SQL_FILE" >&2
+  exit 2
+fi
+
+if ! command -v sqlite3 >/dev/null 2>&1; then
+  echo "缺少 sqlite3 命令行工具" >&2
+  exit 2
+fi
+
+if [[ "$(sqlite3 -readonly "$db_path" \
+      "select count(*) from sqlite_master where type='table' and name in ('gidToKey','ImageKeyCache');")" != "2" ]]; then
+  echo "缓存表缺失：$db_path 中找不到 gidToKey 与 ImageKeyCache。" >&2
+  exit 2
+fi
+
+# 体检统计，与 SQL 里实际清理的范围一致：
+#   bad_gids           将被整组删除的 gid 个数（去重），覆盖：
+#                      重复头部 / 行数不符 / 页码去重后不足 / 页码区间异常 /
+#                      空 imgkey / 空 key / 非法 pages
+#   bad_gid_rows       这些 gid 占用的头部行数（重复头部的 gid 会多于 1 行）
+#   duplicate_pages    重复的 (gid,page) 组数，仅用于展示，会随所属 gid 一并清理
+#   orphan_gids        有页 key 但无头部记录的 gid 个数
+read_stats() {
+  sqlite3 -readonly "$db_path" "
+    select 'header_rows',     count(*) from gidToKey;
+    select 'page_rows',       count(*) from ImageKeyCache;
+    select 'duplicate_gids',  count(*) from (select gid from gidToKey group by gid having count(*) > 1);
+    select 'duplicate_pages', count(*) from (select gid,page from ImageKeyCache group by gid,page having count(*) > 1);
+    select 'bad_gids',        count(distinct g.gid) from gidToKey g
+      where g.pages is null or g.pages <= 0
+         or g.key is null or trim(g.key) = ''
+         or (select count(*) from ImageKeyCache i where i.gid = g.gid) <> g.pages
+         or (select count(distinct i.page) from ImageKeyCache i where i.gid = g.gid) <> g.pages
+         or (select min(i.page) from ImageKeyCache i where i.gid = g.gid) <> 1
+         or (select max(i.page) from ImageKeyCache i where i.gid = g.gid) <> g.pages
+         or exists (select 1 from ImageKeyCache i
+                    where i.gid = g.gid and (i.imgkey is null or trim(i.imgkey) = ''));
+    select 'bad_gid_rows',    coalesce(sum(c), 0) from (
+      select count(*) as c from gidToKey g where g.gid in (
+        select g2.gid from gidToKey g2 where g2.pages is null or g2.pages <= 0
+           or g2.key is null or trim(g2.key) = ''
+           or (select count(*) from ImageKeyCache i where i.gid = g2.gid) <> g2.pages
+           or (select count(distinct i.page) from ImageKeyCache i where i.gid = g2.gid) <> g2.pages
+           or (select min(i.page) from ImageKeyCache i where i.gid = g2.gid) <> 1
+           or (select max(i.page) from ImageKeyCache i where i.gid = g2.gid) <> g2.pages
+           or exists (select 1 from ImageKeyCache i
+                      where i.gid = g2.gid and (i.imgkey is null or trim(i.imgkey) = '')))
+      group by g.gid);
+    select 'orphan_gids',     count(distinct gid) from ImageKeyCache
+      where gid not in (select gid from gidToKey);
+    select 'strict_index',    count(*) from sqlite_master
+      where type='index' and name='ux_ImageKeyCache_gid_page';
+  "
+}
+
+mode_label="dry-run（只读）"
+if [[ "$apply" == "yes" ]]; then mode_label="apply（读写）"; fi
+
+echo "=== 缓存库图片索引迁移（$mode_label） ==="
+echo "数据库: $db_path"
+echo "--- 迁移前体检 ---"
+read_stats | while IFS='|' read -r name value; do
+  printf '  %-16s %s\n' "$name" "$value"
+done
+
+if [[ "$apply" != "yes" ]]; then
+  echo
+  echo "dry-run：未做任何写入。确认无误后加 --apply 执行迁移。"
+  echo "提示：请先在 SQLite 副本上演练，副本应这样生成（含 WAL 内容）："
+  echo "  sqlite3 -readonly <生产库> \".backup '<副本路径>'\""
+  exit 0
+fi
+
+# ---- 备份：SQLite online backup，包含 WAL 中已提交但未 checkpoint 的内容 ----
+backup="$db_path.before-image-index.$(date -u +%Y%m%dT%H%M%SZ)"
+if ! sqlite3 "$db_path" ".backup '$backup'"; then
+  echo "备份失败，未做任何修改: $backup" >&2
+  exit 3
+fi
+if [[ ! -s "$backup" ]]; then
+  echo "备份文件为空，未做任何修改: $backup" >&2
+  exit 3
+fi
+if [[ "$(sqlite3 -readonly "$backup" \
+      "select count(*) from sqlite_master where type='table' and name in ('gidToKey','ImageKeyCache');")" != "2" ]]; then
+  echo "备份校验失败（缺少缓存表），未做任何修改，已删除无效备份。" >&2
+  rm -f -- "$backup"
+  exit 3
+fi
+echo "已备份（SQLite .backup）: $backup"
+
+# ---- 执行迁移：.bail on 保证任一语句失败即退出，事务不提交 ----
+sqlite3 -cmd '.bail on' "$db_path" < "$SQL_FILE"
+
+echo "--- 迁移后体检 ---"
+read_stats | while IFS='|' read -r name value; do
+  printf '  %-16s %s\n' "$name" "$value"
+done
+
+echo "图片索引迁移完成: $db_path"

scripts/migrate_image_index_cache.sql

@@ -0,0 +1,67 @@
+-- 图片索引缓存迁移：为 cache.db 的两张索引表补唯一约束与查询索引。
+--
+-- 目标（对应本次重写的三条不变量）：
+--   1. gid 唯一   —— 同一本画廊只能有一条 gidToKey 记录；
+--   2. (gid,page) 唯一 —— 同一页只能有一个 imgkey，同时天然满足按页查询的索引需求；
+--   3. 只保留「完整」的索引 —— 半截或冲突的 gid 整组删除，让下一次在线阅读重新抓取。
+--
+-- 为什么用唯一索引而不是重建表：
+--   * 唯一索引对 SQLite 与唯一约束等价，都会拒绝重复写入；
+--   * 不需要搬表、改列，旧版本二进制仍可读写同一份数据；
+--   * 回滚只需 drop index，最坏情况也只需回到脚本自动生成的备份文件。
+--
+-- 幂等：所有重建索引都带 IF NOT EXISTS；清理语句只按集合删除，重复执行结果相同。
+-- 安全：本脚本只做 DELETE 与 CREATE INDEX，不建表、不改列、不碰 gidToKey/ImageKeyCache
+--       之外的任何对象。必须在事务中整体提交，调用方使用 sqlite3 -bail 保证任一语句
+--       失败即终止、事务回滚。
+--
+-- 执行前请务必先备份数据库文件（迁移脚本 migrate_image_index_cache.sh --apply 会自动备份）。
+
+BEGIN IMMEDIATE;
+
+-- ---------- 1. 冲突 gid：同一 gid 有多条头部记录 ----------
+-- 无法判断哪一条正确，整组移除，由下次访问重抓。
+CREATE TEMP TABLE __conflict_gid AS
+SELECT gid FROM gidToKey GROUP BY gid HAVING COUNT(*) > 1;
+
+DELETE FROM ImageKeyCache WHERE gid IN (SELECT gid FROM __conflict_gid);
+DELETE FROM gidToKey     WHERE gid IN (SELECT gid FROM __conflict_gid);
+
+-- ---------- 2. 半截或非法 gid：头部与页 key 不一致 ----------
+-- 判定同时覆盖：页码数量不符、页码不连续（跳号/重复）、区间不是 1..pages、
+-- 头部字段为空、以及存在空的 imgkey 行。
+CREATE TEMP TABLE __broken_gid AS
+SELECT g.gid
+FROM gidToKey g
+WHERE g.pages IS NULL OR g.pages <= 0
+   OR g.key IS NULL OR trim(g.key) = ''
+   OR (SELECT COUNT(*) FROM ImageKeyCache i WHERE i.gid = g.gid) <> g.pages
+   OR (SELECT COUNT(DISTINCT i.page) FROM ImageKeyCache i WHERE i.gid = g.gid) <> g.pages
+   OR (SELECT MIN(i.page) FROM ImageKeyCache i WHERE i.gid = g.gid) <> 1
+   OR (SELECT MAX(i.page) FROM ImageKeyCache i WHERE i.gid = g.gid) <> g.pages
+   OR EXISTS (SELECT 1 FROM ImageKeyCache i
+              WHERE i.gid = g.gid AND (i.imgkey IS NULL OR trim(i.imgkey) = ''));
+
+DELETE FROM ImageKeyCache WHERE gid IN (SELECT gid FROM __broken_gid);
+DELETE FROM gidToKey     WHERE gid IN (SELECT gid FROM __broken_gid);
+
+-- ---------- 3. 孤儿页 key：没有对应头部记录 ----------
+DELETE FROM ImageKeyCache WHERE gid NOT IN (SELECT gid FROM gidToKey);
+
+-- ---------- 4. 唯一约束 ----------
+-- 到这里若仍有重复，说明上面的判定有遗漏；CREATE UNIQUE INDEX 会失败，
+-- 配合 -bail 让整个事务回滚，不会留下「一半约束」的库。
+CREATE UNIQUE INDEX IF NOT EXISTS ux_gidToKey_gid
+    ON gidToKey (gid);
+
+CREATE UNIQUE INDEX IF NOT EXISTS ux_ImageKeyCache_gid_page
+    ON ImageKeyCache (gid, page);
+
+-- 按 gid 统计页数会用到 (gid,page) 前缀，按页取 key 也走同一索引，
+-- 因此不再单独建 page 索引，避免重复占用写放大。
+
+DROP TABLE __conflict_gid;
+DROP TABLE __broken_gid;
+
+COMMIT;
+

scripts/migrate_subscription_accounts.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+db_path="${1:-LionWebsite.db}"
+legacy_key="${2:-}"
+
+if [[ -z "$legacy_key" || ! "$legacy_key" =~ ^[A-Za-z0-9._~-]+$ ]]; then
+  echo "用法: $0 <LionWebsite.db> <现有共享订阅 upstream key>" >&2
+  exit 2
+fi
+if [[ ! -f "$db_path" ]]; then
+  echo "数据库不存在: $db_path" >&2
+  exit 2
+fi
+
+sqlite3 "$db_path" -cmd ".parameter init" -cmd ".parameter set :legacy_key '$legacy_key'" \
+  < "$(dirname "$0")/migrate_subscription_accounts.sql"
+echo "订阅子账号迁移完成: $db_path"

scripts/migrate_subscription_accounts.sql

@@ -0,0 +1,38 @@
+BEGIN;
+
+CREATE TABLE IF NOT EXISTS subscription_account (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    name VARCHAR(100) NOT NULL UNIQUE,
+    upstream_key VARCHAR(255) NOT NULL UNIQUE,
+    filter_high_multiplier INTEGER NOT NULL DEFAULT 1,
+    enabled INTEGER NOT NULL DEFAULT 1,
+    last_success_at DATETIME,
+    last_error TEXT,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+INSERT INTO subscription_account (name, upstream_key, filter_high_multiplier, enabled)
+SELECT '旧共享订阅', :legacy_key, 1, 1
+WHERE NOT EXISTS (SELECT 1 FROM subscription_account WHERE name = '旧共享订阅')
+  AND NOT EXISTS (SELECT 1 FROM subscription_account WHERE upstream_key = :legacy_key);
+
+CREATE TABLE sub_bind_new (
+    key VARCHAR(255) NOT NULL PRIMARY KEY,
+    user VARCHAR(255) NOT NULL UNIQUE,
+    subscription_account_id INTEGER NOT NULL,
+    FOREIGN KEY (subscription_account_id) REFERENCES subscription_account(id)
+);
+
+INSERT INTO sub_bind_new (key, user, subscription_account_id)
+SELECT sb.key, sb.user, sa.id
+FROM sub_bind sb
+JOIN (SELECT id FROM subscription_account
+      WHERE name = '旧共享订阅' OR upstream_key = :legacy_key
+      ORDER BY id LIMIT 1) sa;
+
+DROP TABLE sub_bind;
+ALTER TABLE sub_bind_new RENAME TO sub_bind;
+CREATE INDEX idx_sub_bind_account ON sub_bind(subscription_account_id);
+
+COMMIT;

scripts/migrate_subscription_events.py

@@ -0,0 +1,80 @@
+#!/usr/bin/env python3
+"""Create durable subscription event receipts/history, with a SQLite backup.
+
+Stop the production backend before --apply and pass --service-stopped to confirm.
+No automatic startup DDL exists. Dry run is read-only; only hashes enter history.
+Receipt retention is independent of the most recent ten visible update records.
+"""
+import argparse
+import datetime
+import hashlib
+import json
+from pathlib import Path
+import sqlite3
+
+DDL = (
+    """CREATE TABLE IF NOT EXISTS subscription_event_receipt (
+        event_id TEXT PRIMARY KEY NOT NULL, key_hash TEXT NOT NULL,
+        client TEXT NOT NULL, occurred_at INTEGER NOT NULL, source TEXT NOT NULL,
+        ingested_at INTEGER NOT NULL, fingerprint TEXT NOT NULL, outcome TEXT NOT NULL
+    )""",
+    """CREATE TABLE IF NOT EXISTS subscription_event_binding (
+        key_hash TEXT PRIMARY KEY NOT NULL, user_id INTEGER,
+        user_name TEXT NOT NULL, first_seen_at INTEGER NOT NULL, last_seen_at INTEGER NOT NULL
+    )""",
+    "CREATE INDEX IF NOT EXISTS idx_subscription_event_binding_user ON subscription_event_binding(user_id)",
+    "CREATE INDEX IF NOT EXISTS idx_sub_record_user_time ON sub_update_record(user_id,time DESC,id DESC)",
+)
+
+
+def migrate(database: Path, apply=False, service_stopped=False):
+    if not database.is_file():
+        raise ValueError("database must already exist")
+    if apply and not service_stopped:
+        raise ValueError("stop backend and supply --service-stopped before applying")
+    uri = database.resolve().as_uri() + ("?mode=rw" if apply else "?mode=ro")
+    with sqlite3.connect(uri, uri=True) as db:
+        for table in ("User", "sub_bind", "sub_update_record"):
+            columns = {row[1] for row in db.execute(f'PRAGMA table_info("{table}")')}
+            if not columns or (table != "User" and "user_id" not in columns):
+                raise ValueError("stable user links migration is required first")
+        unresolved = db.execute("SELECT count(*) FROM sub_bind sb LEFT JOIN User u ON u.id=sb.user_id WHERE sb.user_id IS NOT NULL AND u.id IS NULL").fetchone()[0]
+        if unresolved:
+            raise ValueError("resolve non-null dangling subscription user IDs before migration")
+        tables = {row[0] for row in db.execute("SELECT name FROM sqlite_master WHERE type='table'")}
+        result = {"apply": apply, "tables_to_create": sorted({"subscription_event_receipt", "subscription_event_binding"} - tables)}
+        if not apply:
+            return result
+        stamp = datetime.datetime.now(datetime.timezone.utc).strftime("%Y%m%dT%H%M%S%fZ")
+        backup = database.with_name(database.name + ".before-subscription-events." + stamp)
+        # Create mode 600 before any sensitive database bytes are written.
+        backup.touch(mode=0o600, exist_ok=False)
+        with sqlite3.connect(backup) as snapshot:
+            db.backup(snapshot)
+        try:
+            db.execute("BEGIN IMMEDIATE")
+            for statement in DDL:
+                db.execute(statement)
+            now = int(datetime.datetime.now(datetime.timezone.utc).timestamp() * 1000)
+            for key, user_id, name in db.execute("SELECT sb.key,sb.user_id,coalesce(u.username,sb.user) FROM sub_bind sb LEFT JOIN User u ON u.id=sb.user_id"):
+                key_hash = hashlib.sha256(key.encode("utf-8")).hexdigest()
+                db.execute("""INSERT INTO subscription_event_binding VALUES(?,?,?,?,?)
+                    ON CONFLICT(key_hash) DO UPDATE SET user_name=excluded.user_name,last_seen_at=excluded.last_seen_at
+                    WHERE subscription_event_binding.user_id IS excluded.user_id""", (key_hash, user_id, name, now, now))
+            db.commit()
+        except BaseException:
+            db.rollback()
+            raise
+        result["backup"] = str(backup)
+        result["history_bindings"] = db.execute("SELECT count(*) FROM subscription_event_binding").fetchone()[0]
+        result["integrity"] = db.execute("PRAGMA quick_check").fetchone()[0]
+        return result
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("database", type=Path)
+    parser.add_argument("--apply", action="store_true")
+    parser.add_argument("--service-stopped", action="store_true")
+    args = parser.parse_args()
+    print(json.dumps(migrate(args.database, args.apply, args.service_stopped), ensure_ascii=False))

scripts/migrate_subscription_refresh.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+db_path="${1:-LionWebsite.db}"
+
+if [[ ! -f "$db_path" ]]; then
+  echo "数据库不存在: $db_path" >&2
+  exit 2
+fi
+
+if command -v systemctl >/dev/null 2>&1 && systemctl is-active --quiet lionwebsite 2>/dev/null; then
+  echo "检测到 lionwebsite.service 仍在运行；请先停止服务再迁移，避免写冲突。" >&2
+  exit 3
+fi
+
+if pgrep -f 'java .*lionwebsite\.jar' >/dev/null 2>&1; then
+  echo "检测到主站进程仍在运行；请先停止服务再迁移，避免写冲突。" >&2
+  exit 3
+fi
+
+backup="${db_path}.before-refresh-schedule.$(date -u +%Y%m%dT%H%M%SZ)"
+cp "$db_path" "$backup"
+echo "已备份: $backup"
+
+sqlite3 "$db_path" < "$(dirname "$0")/migrate_subscription_refresh.sql"
+
+echo "--- 校验 ---"
+sqlite3 "$db_path" "select count(*) as accounts, sum(next_refresh_at is null) as missing_schedule from subscription_account;"
+echo "订阅刷新计划迁移完成: $db_path"

scripts/migrate_subscription_refresh.sql

@@ -0,0 +1,26 @@
+-- 为每账号分散刷新增加计划字段。
+-- 纯新增列：旧版本二进制忽略这两列，因此回滚程序时不必回滚数据库。
+BEGIN;
+
+-- next_refresh_at：该子账号下一次应刷新的时刻，Epoch 毫秒。
+-- 用整数存时刻，避免 SQLite 文本时间戳被按本地时区解释（实证存在 8 小时偏差）。
+-- last_success_epoch：最近一次成功刷新的真实时刻，Epoch 毫秒。
+-- 既有的 last_success_at 保持原样，仅供页面展示，不参与调度判断。
+ALTER TABLE subscription_account ADD COLUMN next_refresh_at INTEGER;
+ALTER TABLE subscription_account ADD COLUMN last_success_epoch INTEGER;
+
+-- 回填 last_success_epoch：SQLite 的 strftime 把文本时间按 UTC 解释，而
+-- CURRENT_TIMESTAMP 写入的正是 UTC，因此这里能得到正确时刻（JDBC 读取则会偏 8 小时）。
+-- 必须回填：否则所有既有账号都会被当成「从未成功过」，迁移后立刻集中补刷一遍，
+-- 正好复现本次改造要消除的爆发。
+UPDATE subscription_account
+SET last_success_epoch = CAST(strftime('%s', last_success_at) AS INTEGER) * 1000
+WHERE last_success_epoch IS NULL AND last_success_at IS NOT NULL;
+
+-- 已有账号在窗口内按 id 错开，避免迁移后同一 tick 集中开火。
+-- 以迁移时刻为基准按 37 分钟步长铺开（12 个账号约 7.4 小时排完）。
+UPDATE subscription_account
+SET next_refresh_at = (CAST(strftime('%s', 'now') AS INTEGER) * 1000) + (id * 37 * 60 * 1000)
+WHERE next_refresh_at IS NULL;
+
+COMMIT;

scripts/migrate_task_operation_v2.sql

@@ -0,0 +1,31 @@
+-- 任务操作记录表（协议 v2：先持久化意图，再产生外部副作用）
+--
+-- 这是显式迁移脚本，不会被应用自动执行，也不对生产库运行。
+-- 执行前请备份：sqlite3 LionWebsite.db ".backup LionWebsite.db.before-task-operation"
+--
+-- 幂等：可重复执行。
+
+create table if not exists task_operation
+(
+    gid               integer not null
+        constraint task_operation_pk
+            primary key,
+    operationId       varchar(64),
+    deleteOperationId varchar(64),
+    state             varchar(20) not null,
+    lastRevision      integer     not null default 0,
+    lastReportId      varchar(64),
+    updateTime        long        not null default 0
+);
+
+-- 节点上报消费只按 gid 命中主键，这里额外为「按状态找待处理意图」提供查询入口。
+create index if not exists idx_task_operation_state on task_operation (state);
+
+-- gallery.gid 目前只有 table 级主键约束（部分历史库甚至是自增主键的衍生约束），
+-- 这里显式建立唯一索引，保证同一 gid 不会出现两条任务行：
+-- 「同一 gid 只有一个有效意图」是 v2 生命周期成立的前提。
+-- 若该语句因历史重复数据失败，请先人工确认重复行来源再处理，不要直接删除。
+create unique index if not exists idx_gallery_gid_unique on gallery (gid);
+
+-- 旧任务行没有操作记录：启动/查询时按 gid 惰性补建为 SUBMITTED（已在上游提交过），
+-- 不需要在迁移里批量写入，避免把正在进行的任务判成 UNKNOWN。

scripts/migrate_task_operations.py

@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+"""Explicit task-v2 schema migration. Default is read-only; --apply backs up first."""
+import argparse
+import datetime
+import json
+from pathlib import Path
+import sqlite3
+
+
+def migrate(database: Path, apply: bool = False) -> dict:
+    if not database.is_file():
+        raise ValueError("database must already exist")
+    with sqlite3.connect(database.resolve().as_uri() + ("?mode=rw" if apply else "?mode=ro"), uri=True) as db:
+        if not db.execute("pragma table_info(gallery)").fetchall():
+            raise ValueError("required table missing: gallery")
+        duplicates = db.execute("select count(*) from (select gid from gallery group by gid having count(*)>1)").fetchone()[0]
+        if duplicates:
+            raise ValueError("duplicate gallery gid; reconcile before migration")
+        present = bool(db.execute("pragma table_info(task_operation)").fetchall())
+        result = {"apply": apply, "create_operation_table": not present}
+        if not apply:
+            return result
+        stamp = datetime.datetime.now(datetime.timezone.utc).strftime("%Y%m%dT%H%M%S%fZ")
+        backup = database.with_name(database.name + ".before-task-v2." + stamp)
+        with sqlite3.connect(backup) as copy:
+            db.backup(copy)
+        backup.chmod(0o600)
+        sql = Path(__file__).with_name("migrate_task_operation_v2.sql").read_text()
+        try:
+            db.executescript("BEGIN IMMEDIATE;\n" + sql + "\nCOMMIT;")
+        except BaseException:
+            db.rollback()
+            raise
+        result["backup"] = str(backup)
+        result["operation_rows"] = db.execute("select count(*) from task_operation").fetchone()[0]
+        return result
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("database", type=Path)
+    parser.add_argument("--apply", action="store_true")
+    arguments = parser.parse_args()
+    print(json.dumps(migrate(arguments.database, arguments.apply), ensure_ascii=False))

scripts/migrate_user_links.py

@@ -0,0 +1,64 @@
+#!/usr/bin/env python3
+"""Add stable user identity to subscription bindings and access records.
+
+The default invocation only reports schema changes. --apply creates a consistent
+SQLite backup before the transaction. Run against an isolated database first.
+"""
+import argparse
+import datetime
+import json
+from pathlib import Path
+import sqlite3
+
+
+def migrate(db_path: Path, apply: bool = False) -> dict:
+    if not db_path.is_file():
+        raise ValueError("database must already exist")
+    uri = db_path.resolve().as_uri() + ("?mode=rw" if apply else "?mode=ro")
+    with sqlite3.connect(uri, uri=True) as db:
+        changes = []
+        for table in ("sub_bind", "sub_update_record"):
+            columns = {row[1] for row in db.execute(f'PRAGMA table_info("{table}")')}
+            if not columns:
+                raise ValueError(f"required table missing: {table}")
+            if "user_id" not in columns:
+                changes.append(f"add {table}.user_id")
+        duplicates = db.execute(
+            "select count(*) from (select username from User group by username having count(*) > 1)"
+        ).fetchone()[0]
+        if duplicates:
+            raise ValueError("ambiguous duplicate usernames; resolve identities before migration")
+        result = {"apply": apply, "schema_changes": changes}
+        if not apply:
+            return result
+        stamp = datetime.datetime.now(datetime.timezone.utc).strftime("%Y%m%dT%H%M%S%fZ")
+        backup = db_path.with_name(db_path.name + ".before-user-links." + stamp)
+        with sqlite3.connect(backup) as snapshot:
+            db.backup(snapshot)
+        backup.chmod(0o600)
+        db.execute("BEGIN IMMEDIATE")
+        try:
+            for change in changes:
+                table = change.split()[1].split(".")[0]
+                db.execute(f'ALTER TABLE "{table}" ADD COLUMN user_id INTEGER REFERENCES User(id)')
+            for table in ("sub_bind", "sub_update_record"):
+                db.execute(f'UPDATE "{table}" SET user_id=(SELECT id FROM User WHERE username="{table}".user) WHERE user_id IS NULL')
+            db.execute("CREATE UNIQUE INDEX IF NOT EXISTS User_username_uindex ON User(username)")
+            db.execute("CREATE UNIQUE INDEX IF NOT EXISTS idx_sub_bind_user_id ON sub_bind(user_id) WHERE user_id IS NOT NULL")
+            db.execute("CREATE INDEX IF NOT EXISTS idx_sub_record_user_id ON sub_update_record(user_id, id)")
+            db.commit()
+        except BaseException:
+            db.rollback()
+            raise
+        result["backup"] = str(backup)
+        result["unresolved_bindings"] = db.execute("select count(*) from sub_bind where user_id is null").fetchone()[0]
+        result["unresolved_records"] = db.execute("select count(*) from sub_update_record where user_id is null").fetchone()[0]
+        return result
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("database", type=Path)
+    parser.add_argument("--apply", action="store_true")
+    args = parser.parse_args()
+    print(json.dumps(migrate(args.database, args.apply), ensure_ascii=False))

scripts/test_subscription_events.py

@@ -0,0 +1,82 @@
+import importlib.util
+from pathlib import Path
+import sqlite3
+import tempfile
+import unittest
+import hashlib
+
+spec = importlib.util.spec_from_file_location("migration", Path(__file__).with_name("migrate_subscription_events.py"))
+migration = importlib.util.module_from_spec(spec)
+spec.loader.exec_module(migration)
+
+
+class SubscriptionEventsMigrationTest(unittest.TestCase):
+    def test_explicit_backup_atomic_and_idempotent(self):
+        with tempfile.TemporaryDirectory() as directory:
+            path = Path(directory) / "main.db"
+            with sqlite3.connect(path) as db:
+                db.executescript("""
+                    CREATE TABLE User(id INTEGER PRIMARY KEY,username TEXT);
+                    CREATE TABLE sub_bind(key TEXT,user TEXT,user_id INTEGER);
+                    CREATE TABLE sub_update_record(id INTEGER PRIMARY KEY,user_id INTEGER,time INTEGER);
+                    INSERT INTO User VALUES(3,'alice');
+                    INSERT INTO sub_bind VALUES('public-test-key','alice',3);
+                """)
+            dry = migration.migrate(path)
+            self.assertEqual(2, len(dry["tables_to_create"]))
+            with self.assertRaises(ValueError):
+                migration.migrate(path, True)
+            first = migration.migrate(path, True, True)
+            self.assertEqual("ok", first["integrity"])
+            self.assertEqual(0o600, Path(first["backup"]).stat().st_mode & 0o777)
+            with sqlite3.connect(first["backup"]) as db:
+                self.assertEqual(0, db.execute("SELECT count(*) FROM sqlite_master WHERE name='subscription_event_binding'").fetchone()[0])
+            with sqlite3.connect(path) as db:
+                row = db.execute("SELECT key_hash,user_id,user_name FROM subscription_event_binding").fetchone()
+                self.assertEqual((hashlib.sha256(b"public-test-key").hexdigest(), 3, "alice"), row)
+                db.execute("INSERT INTO subscription_event_receipt VALUES('id','hash','v2',0,'primary',1,'fingerprint','recorded')")
+            second = migration.migrate(path, True, True)
+            self.assertEqual([], second["tables_to_create"])
+            with sqlite3.connect(path) as db:
+                self.assertEqual(1, db.execute("SELECT count(*) FROM subscription_event_receipt").fetchone()[0])
+                self.assertEqual(1, db.execute("SELECT count(*) FROM subscription_event_binding").fetchone()[0])
+
+    def test_legacy_labels_without_user_ids_remain_null(self):
+        with tempfile.TemporaryDirectory() as directory:
+            path = Path(directory) / "main.db"
+            with sqlite3.connect(path) as db:
+                db.executescript("""
+                    CREATE TABLE User(id INTEGER PRIMARY KEY,username TEXT);
+                    CREATE TABLE sub_bind(key TEXT,user TEXT,user_id INTEGER);
+                    CREATE TABLE sub_update_record(id INTEGER PRIMARY KEY,user_id INTEGER,time INTEGER);
+                    INSERT INTO sub_bind VALUES('legacy-key','legacy-label',NULL);
+                """)
+            result = migration.migrate(path, True, True)
+            self.assertEqual(1, result["history_bindings"])
+            with sqlite3.connect(path) as db:
+                row = db.execute("SELECT key_hash,user_id,user_name FROM subscription_event_binding").fetchone()
+                self.assertEqual((hashlib.sha256(b"legacy-key").hexdigest(), None, "legacy-label"), row)
+                self.assertIsNone(db.execute("SELECT user_id FROM sub_bind").fetchone()[0])
+                self.assertEqual(0, db.execute("SELECT count(*) FROM User").fetchone()[0])
+            migration.migrate(path, True, True)
+            with sqlite3.connect(path) as db:
+                self.assertEqual(1, db.execute("SELECT count(*) FROM subscription_event_binding").fetchone()[0])
+
+    def test_orphan_binding_aborts_without_ddl(self):
+        with tempfile.TemporaryDirectory() as directory:
+            path = Path(directory) / "main.db"
+            with sqlite3.connect(path) as db:
+                db.executescript("""
+                    CREATE TABLE User(id INTEGER PRIMARY KEY,username TEXT);
+                    CREATE TABLE sub_bind(key TEXT,user TEXT,user_id INTEGER);
+                    CREATE TABLE sub_update_record(id INTEGER PRIMARY KEY,user_id INTEGER,time INTEGER);
+                    INSERT INTO sub_bind VALUES('test','deleted',9);
+                """)
+            with self.assertRaises(ValueError):
+                migration.migrate(path, True, True)
+            with sqlite3.connect(path) as db:
+                self.assertEqual(0, db.execute("SELECT count(*) FROM sqlite_master WHERE name LIKE 'subscription_event_%'").fetchone()[0])
+
+
+if __name__ == "__main__":
+    unittest.main()

scripts/test_user_links.py

@@ -0,0 +1,55 @@
+import importlib.util
+from pathlib import Path
+import sqlite3
+import tempfile
+import unittest
+
+spec = importlib.util.spec_from_file_location("migration", Path(__file__).with_name("migrate_user_links.py"))
+migration = importlib.util.module_from_spec(spec)
+spec.loader.exec_module(migration)
+
+
+class MigrationTest(unittest.TestCase):
+    def test_dry_run_idempotent_migration_and_rename(self):
+        with tempfile.TemporaryDirectory() as temporary:
+            path = Path(temporary) / "test.db"
+            with sqlite3.connect(path) as db:
+                db.executescript("""
+                    CREATE TABLE User(id INTEGER PRIMARY KEY, username TEXT);
+                    CREATE TABLE sub_bind(key TEXT PRIMARY KEY, user TEXT, subscription_account_id INTEGER);
+                    CREATE TABLE sub_update_record(id INTEGER PRIMARY KEY, user TEXT, location TEXT);
+                    INSERT INTO User VALUES(1,'old-name');
+                    INSERT INTO sub_bind VALUES('example-key','old-name',2);
+                    INSERT INTO sub_update_record VALUES(10,'old-name','unknown');
+                    INSERT INTO sub_update_record VALUES(11,'old-name','unknown');
+                """)
+            before = path.read_bytes()
+            self.assertEqual(2, len(migration.migrate(path)["schema_changes"]))
+            self.assertEqual(before, path.read_bytes())
+            self.assertEqual(0, migration.migrate(path, True)["unresolved_bindings"])
+            self.assertEqual([], migration.migrate(path, True)["schema_changes"])
+            with sqlite3.connect(path) as db:
+                db.execute("update User set username='new-name' where id=1")
+                self.assertEqual((1,), db.execute("select user_id from sub_bind").fetchone())
+                # A slow first lookup must not overwrite the second request's row.
+                db.execute("update sub_update_record set location='first-location' where id=10")
+                self.assertEqual(("unknown",), db.execute("select location from sub_update_record where id=11").fetchone())
+
+    def test_ambiguous_names_fail_without_modifying_database(self):
+        with tempfile.TemporaryDirectory() as temporary:
+            path = Path(temporary) / "test.db"
+            with sqlite3.connect(path) as db:
+                db.executescript("""
+                    CREATE TABLE User(id INTEGER PRIMARY KEY, username TEXT);
+                    CREATE TABLE sub_bind(user TEXT);
+                    CREATE TABLE sub_update_record(user TEXT);
+                    INSERT INTO User VALUES(1,'same'),(2,'same');
+                """)
+            before = path.read_bytes()
+            with self.assertRaises(ValueError):
+                migration.migrate(path, True)
+            self.assertEqual(before, path.read_bytes())
+
+
+if __name__ == "__main__":
+    unittest.main()

src/main/java/com/lion/lionwebsite/Configuration/CustomBean.java

@@ -2,6 +2,7 @@ package com.lion.lionwebsite.Configuration;
 
 import com.lion.lionwebsite.Domain.*;
 import com.lion.lionwebsite.Message.*;
+import com.lion.lionwebsite.Service.SubscriptionRefreshPlanner;
 import com.lion.lionwebsite.Util.GalleryUtil;
 import com.pengrad.telegrambot.TelegramBot;
 import com.pengrad.telegrambot.model.*;
@@ -14,14 +15,23 @@ import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
+import java.time.Clock;
+import java.time.Duration;
+import java.util.Random;
+
 @Configuration
 @RegisterReflectionForBinding(classes = {CustomConfiguration.class, GidToKey.class, ImageKeyCache.class,
         GalleryForQuery.class, Gallery.class, GalleryTask.class, HikariConfig.class,
-        PageNameCache.class, ShareFile.class, User.class,
+        PageNameCache.class, User.class,
         SendResponse.class, Message.class, com.pengrad.telegrambot.model.User.class,
         Chat.class, MessageEntity.class,
         AbstractMethodError.class, DeleteGalleryMessage.class, DownloadPostMessage.class, DownloadStatusMessage.class,
-        IdentityMessage.class, MaintainMessage.class, ResponseMessage.class, AvailableCheckMessage.class, LinkPreviewOptions.class})
+        IdentityMessage.class, MaintainMessage.class, ResponseMessage.class, AvailableCheckMessage.class,
+        // 协议 v2 的消息与任务操作实体：原生镜像下 Jackson/MyBatis 都要反射构造它们。
+        ProtocolHelloMessage.class, TaskCommandMessage.class, TaskReportMessage.class, TaskReportAckMessage.class,
+        TaskOperation.class,
+        SubscriptionSnapshotMessage.class, SubscriptionSnapshotPayload.class, SubscriptionAccountSnapshot.class,
+        SubscriptionBindingSnapshot.class, LinkPreviewOptions.class})
 public class CustomBean {
 
     @Value("${bot.token:5222939329:AAHa6l9ZuVVdNSDLPI_H-c8O_VgeOEw5plA}")
@@ -39,4 +49,22 @@ public class CustomBean {
     public TelegramBot getTelegramBot(){
         return new TelegramBot(botToken);
     }
+
+    /**
+     * 订阅分散刷新的排程器。
+     *
+     * <p>放在这里是为了让窗口、最小间隔、tick 周期与重试间隔集中由配置注入，
+     * 同时保持 {@link SubscriptionRefreshPlanner} 本身是可直接构造的纯对象
+     * （便于用固定时钟与固定随机种子做确定性单元测试）。
+     */
+    @Bean
+    public SubscriptionRefreshPlanner subscriptionRefreshPlanner(
+            @Value("${subscription.refresh.window-hours:24}") long windowHours,
+            @Value("${subscription.refresh.min-gap-minutes:60}") long minGapMinutes,
+            @Value("${subscription.refresh.tick-interval-ms:300000}") long tickIntervalMs,
+            @Value("${subscription.refresh.retry-delay-minutes:60}") long retryDelayMinutes) {
+        return new SubscriptionRefreshPlanner(Clock.systemDefaultZone(), new Random(),
+                Duration.ofHours(windowHours), Duration.ofMinutes(minGapMinutes),
+                Duration.ofMillis(tickIntervalMs), Duration.ofMinutes(retryDelayMinutes));
+    }
 }

src/main/java/com/lion/lionwebsite/Configuration/GalleryIndexConfiguration.java

@@ -0,0 +1,83 @@
+package com.lion.lionwebsite.Configuration;
+
+import com.lion.lionwebsite.Dao.cache.ImageCacheMapper;
+import com.lion.lionwebsite.Domain.ImageKeyCache;
+import com.lion.lionwebsite.Service.GalleryIndexService;
+import com.lion.lionwebsite.Util.GalleryUtil;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.jdbc.datasource.DataSourceTransactionManager;
+import org.springframework.transaction.PlatformTransactionManager;
+import org.springframework.transaction.support.TransactionTemplate;
+
+import javax.sql.DataSource;
+import java.util.List;
+
+/**
+ * 图片索引服务的事务装配。
+ *
+ * <p>单独成文件是为了不触碰既有的 SqlConfiguration：那里的两个 SqlSessionFactory
+ * 保持原样，这里只额外声明缓存库的事务管理器与模板。
+ *
+ * <p>事务管理器必须绑定 datasource-cache —— 索引只写缓存库，
+ * 若误用主库事务管理器，整组替换就失去原子性（删除与写入落在不同连接上）。
+ */
+@Configuration
+public class GalleryIndexConfiguration {
+
+    @Bean
+    public PlatformTransactionManager cacheTransactionManager(
+            @Qualifier("datasource-cache") DataSource cacheDataSource) {
+        return new DataSourceTransactionManager(cacheDataSource);
+    }
+
+    /** 只用于图片索引的短事务发布，超时留给上层请求超时控制，这里显式设为 30 秒。 */
+    @Bean
+    public TransactionTemplate cacheTransactionTemplate(
+            @Qualifier("cacheTransactionManager") PlatformTransactionManager cacheTransactionManager) {
+        TransactionTemplate template = new TransactionTemplate(cacheTransactionManager);
+        template.setTimeout(30);
+        return template;
+    }
+
+    /**
+     * 只读快照事务，用于一次性读取头部与页码。
+     *
+     * <p>读事务不写库，因此只读连接可以与写入并发；它的作用是让「读头部 + 读页码」
+     * 落在同一个快照上，避免恰好读到整组替换的中间状态。
+     */
+    @Bean
+    public TransactionTemplate cacheReadTransactionTemplate(
+            @Qualifier("cacheTransactionManager") PlatformTransactionManager cacheTransactionManager) {
+        TransactionTemplate template = new TransactionTemplate(cacheTransactionManager);
+        template.setTimeout(10);
+        return template;
+    }
+
+    /**
+     * 这里显式不设置 {@code readOnly}：sqlite-jdbc 不允许在已建立的连接上改只读标志
+     * （实测抛 SQLException: Cannot change read-only flag after establishing a connection），
+     * 而事务模板拿到的是连接池里的既有连接，设置只读会让每次读取都直接失败。
+     * 快照一致性由「同一个事务」保证，不需要额外的只读标志。
+     */
+
+    @Bean
+    public GalleryIndexService galleryIndexService(
+            ImageCacheMapper imageCacheMapper,
+            @Qualifier("cacheTransactionTemplate") TransactionTemplate cacheTransactionTemplate,
+            @Qualifier("cacheReadTransactionTemplate") TransactionTemplate cacheReadTransactionTemplate) {
+        return new GalleryIndexService(imageCacheMapper, cacheTransactionTemplate,
+                cacheReadTransactionTemplate,
+                GalleryIndexConfiguration::fetchPageKeys);
+    }
+
+    /**
+     * 生产环境的上游实现：沿用 GalleryUtil.parseImageKeys（HTTP + JS 解析）。
+     *
+     * <p>放在这里而不是服务内部，是为了让服务在测试中可以脱离静态工具类。
+     */
+    static List<ImageKeyCache> fetchPageKeys(String url) throws Exception {
+        return GalleryUtil.parseImageKeys(url);
+    }
+}

src/main/java/com/lion/lionwebsite/Configuration/InterceptorConfiguration.java

@@ -17,8 +17,13 @@ public class InterceptorConfiguration implements WebMvcConfigurer {
 
     @Override
     public void addInterceptors(InterceptorRegistry registry) {
-        registry.addInterceptor(getPersonalInterceptor()).addPathPatterns("/personal/**", "/remote/**");
+        // 登录端点必须排除在闸门之外，否则校验票据的入口会被自己拦住。
-        registry.addInterceptor(taskHandlerInterceptor).addPathPatterns("/GalleryManage",  "/validate");
+        // /personal/ 只是跳到静态入口 /index，也一并排除：未登录时让前端自己去提示，
+        // 否则用户直接访问根域名只会看到 401。
+        registry.addInterceptor(getPersonalInterceptor())
+                .addPathPatterns("/personal/**", "/remote/**")
+                .excludePathPatterns("/personal/", "/personal/login", "/personal/login/logout", "/personal/denied");
+        registry.addInterceptor(taskHandlerInterceptor).addPathPatterns("/GalleryManage", "/GalleryManage/**", "/validate");
         registry.addInterceptor(getHumanInterceptor()).addPathPatterns("/", "/mobile");
     }
 

src/main/java/com/lion/lionwebsite/Configuration/SqlConfiguration.java

@@ -8,6 +8,11 @@ import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.boot.jdbc.DataSourceBuilder;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Primary;
+import org.springframework.jdbc.datasource.DataSourceTransactionManager;
+import org.springframework.transaction.support.TransactionTemplate;
+
+import com.zaxxer.hikari.HikariDataSource;
 
 import javax.sql.DataSource;
 
@@ -16,7 +21,9 @@ public class SqlConfiguration {
     @Bean(name = "datasource-main")
     @ConfigurationProperties(prefix = "spring.datasource-main")
     public DataSource dataSourceMain() {
-        return DataSourceBuilder.create().build();
+        DataSource dataSource = DataSourceBuilder.create().build();
+        applyBusyTimeout(dataSource);
+        return dataSource;
     }
 
     @Bean(name = "datasource-cache")
@@ -25,6 +32,18 @@ public class SqlConfiguration {
         return DataSourceBuilder.create().build();
     }
 
+    /**
+     * 给主库连接打开 busy 等待。
+     *
+     * <p>主库是单文件 SQLite，任务生命周期会并发开启短事务（创建、状态回执、删除）。
+     * 默认没有 busy 超时，第二个写事务会立刻拿到 SQLITE_BUSY 并被当作 500；
+     * 打开等待后，写冲突会按序排队重试而不是失败。
+     */
+    private void applyBusyTimeout(DataSource dataSource) {
+        if (dataSource instanceof HikariDataSource hikari)
+            hikari.setConnectionInitSql("PRAGMA busy_timeout=5000");
+    }
+
     @Bean(name = "sqlSessionFactory-main")
     public SqlSessionFactory sqlSessionFactoryMain(@Qualifier("datasource-main") DataSource dataSource) throws Exception {
         SqlSessionFactoryBean sessionFactoryBean = new SqlSessionFactoryBean();
@@ -48,4 +67,30 @@ public class SqlConfiguration {
     public SqlSessionTemplate sqlSessionTemplateCache(@Qualifier("sqlSessionFactory-cache") SqlSessionFactory sqlSessionFactory) {
         return new SqlSessionTemplate(sqlSessionFactory);
     }
+
+    /**
+     * 主库事务管理器。
+     *
+     * <p>必须显式绑定到 datasource-main：应用里有两个 DataSource，Spring Boot 的自动配置
+     * 会退避，若没有这个 bean 就没有任何事务管理器，@Transactional 会静默失效。
+     * @Primary 同时让「不指定名字就注入 TransactionManager」的旧代码继续可用。
+     */
+    @Bean(name = "mainTransactionManager")
+    @Primary
+    public DataSourceTransactionManager mainTransactionManager(@Qualifier("datasource-main") DataSource dataSource) {
+        return new DataSourceTransactionManager(dataSource);
+    }
+
+    /**
+     * 主库编程式事务模板。
+     *
+     * <p>任务生命周期需要把「短事务」放在网络调用之外，并且要求「回调里捕获异常后不再抛出」
+     * 不能错误提交，因此调用方必须用 {@code execute} 的返回状态或再次抛出决定回滚，
+     * 而不是在回调里吞掉异常（见 GalleryTaskLifecycleService）。
+     */
+    @Bean(name = "mainTransactionTemplate")
+    @Primary
+    public TransactionTemplate mainTransactionTemplate(@Qualifier("mainTransactionManager") DataSourceTransactionManager transactionManager) {
+        return new TransactionTemplate(transactionManager);
+    }
 }

src/main/java/com/lion/lionwebsite/Configuration/TaskLifecycleWiring.java

@@ -0,0 +1,57 @@
+package com.lion.lionwebsite.Configuration;
+
+import com.lion.lionwebsite.Domain.TaskOperation;
+import com.lion.lionwebsite.Service.GalleryTaskLifecycleService;
+import com.lion.lionwebsite.Service.RemoteService;
+import com.lion.lionwebsite.Service.TaskReportHandler;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.boot.context.event.ApplicationReadyEvent;
+import org.springframework.context.event.EventListener;
+import org.springframework.stereotype.Component;
+
+/**
+ * 装配协议 v2 的双向依赖，并做启动恢复。
+ *
+ * <p>RemoteService 消费上报时需要生命周期服务，而生命周期服务下发命令时需要 RemoteService。
+ * 直接互相注入构造参数会形成环，所以这里在两端都构造完成之后用 setter 接上；
+ * 同时也把「启动时把中断的 SUBMITTING 判为 UNKNOWN、释放 RESERVED 占位」这一步接到应用就绪事件上。
+ *
+ * <p>顺序是不可交换的：
+ * <ol>
+ *   <li>先绑定上报处理器、下发判定解析器与 operationId 解析器；</li>
+ *   <li>再执行启动恢复（SUBMITTING → UNKNOWN、释放 RESERVED）；</li>
+ *   <li>最后才允许建立连接与自动重投。连接由本类显式触发，不再由 RemoteService 的
+ *       PostConstruct 在装配前发起，否则会把状态不明的任务盲目重投给节点。</li>
+ * </ol>
+ * 恢复失败时仍然允许连接（保持节点在线/心跳），但明确禁止自动派发。
+ */
+@Component
+@Slf4j
+@RequiredArgsConstructor
+public class TaskLifecycleWiring {
+
+    final RemoteService remoteService;
+
+    final GalleryTaskLifecycleService lifecycleService;
+
+    @EventListener(ApplicationReadyEvent.class)
+    public void wire() {
+        TaskReportHandler handler = lifecycleService;
+        remoteService.setTaskReportHandler(handler);
+        remoteService.setDownloadOperationIdResolver(lifecycleService::currentOperationId);
+        remoteService.setDispatchResolver(lifecycleService::resolveDispatch);
+        boolean recoverySafe = false;
+        try {
+            int recovered = lifecycleService.recoverInterruptedSubmissions();
+            recoverySafe = true;
+            if (recovered > 0)
+                log.warn("启动恢复：{} 个中断的创建/预占任务已处理（提交中的标为提交未知）", recovered);
+        } catch (RuntimeException e) {
+            // 恢复失败说明库中任务真实状态未知：可以保持连接，但绝不能自动重投/派发。
+            log.error("启动恢复失败，本次启动将拒绝自动重投未完成任务", e);
+        }
+        // 绑定与恢复完成之后才连接：连接成功后的自动重投受 lifecycleReady/recoverySafe 双重约束。
+        remoteService.startAfterWiring(recoverySafe);
+    }
+}

src/main/java/com/lion/lionwebsite/Controller/GalleryManageController.java

@@ -67,6 +67,14 @@ public class GalleryManageController {
         return galleryManageService.deleteGalleryByGid(gid, AuthCode);
     }
 
+    /** 按 gid 查实际下载人昵称，仅管理员可用。 */
+    @GetMapping("/downloader")
+    public String selectDownloader(Integer gid, String AuthCode){
+        if(gid == null)
+            return Response._failure("参数不全");
+        return galleryManageService.selectDownloaderByGid(gid, AuthCode);
+    }
+
 
     @PostMapping("/collect")
     public String collectGallery(Integer gid, String AuthCode){
@@ -97,4 +105,11 @@ public class GalleryManageController {
     public String resetUndone(){
         return galleryManageService.resetUndone();
     }
+
+    @PostMapping("/retry")
+    public String retryGallery(Integer gid){
+        if(gid == null)
+            return Response._failure("参数不全");
+        return galleryManageService.retryGallery(gid);
+    }
 }

src/main/java/com/lion/lionwebsite/Controller/PersonalController.java

@@ -2,17 +2,19 @@ package com.lion.lionwebsite.Controller;
 
 import com.lion.lionwebsite.Service.LocalService;
 import com.lion.lionwebsite.Service.PersonalService;
+import com.lion.lionwebsite.Util.PanelLoginTicket;
 import com.lion.lionwebsite.Util.Response;
-import com.fasterxml.jackson.core.JsonProcessingException;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
+import jakarta.servlet.http.HttpSession;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.MediaType;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
-import org.springframework.web.multipart.MultipartFile;
 
 import java.io.IOException;
 
@@ -23,59 +25,99 @@ import java.io.IOException;
 @RequestMapping("/personal")
 public class PersonalController {
 
+    /** 会话有效期，与 PersonalHub 的面板会话保持一致：14 天滑动过期。 */
+    private static final int SESSION_MAX_INACTIVE_SECONDS = 60 * 60 * 24 * 14;
+
     final PersonalService personalService;
 
     final LocalService localService;
 
+    final PanelLoginTicket panelLoginTicket;
+
     @GetMapping("/")
     public void index(HttpServletResponse resp) throws IOException {
         resp.sendRedirect("/index");
     }
 
-    @GetMapping("/files")
+    /**
-    public String file(String path){
+     * 一键登录：校验机器人签发的 HMAC 票据，通过后建立会话并跳到个人面板。
-        return personalService.getFiles(path);
+     *
+     * <p>票据一次性之外的防护全靠有效期，因此失败的票据不重定向到登录页，
+     * 而是直接回到提示页，避免把参数回显到浏览器历史里。
+     */
+    @GetMapping("/login")
+    public void login(@RequestParam(value = "t", required = false) String ticket,
+                      HttpServletRequest request,
+                      HttpServletResponse response) throws IOException {
+        if (!panelLoginTicket.verify(ticket)) {
+            log.warn("一键登录票据无效或已过期，来自 {}", clientIp(request));
+            // 重定向目标用浏览器可见路径：nginx 的 location / 会把它改写成 /personal/…
+            response.sendRedirect("/denied");
+            return;
+        }
+
+        // 先作废旧会话再建新的，避免会话固定攻击。
+        HttpSession existing = request.getSession(false);
+        if (existing != null)
+            existing.invalidate();
+        HttpSession session = request.getSession(true);
+        session.setAttribute("personalAuthenticated", Boolean.TRUE);
+        session.setMaxInactiveInterval(SESSION_MAX_INACTIVE_SECONDS);
+
+        log.info("一键登录成功，来自 {}", clientIp(request));
+        response.sendRedirect("/index");
     }
 
-    @PostMapping("/uploadFile")
+    @GetMapping("/login/logout")
-    public String uploadFile(String path, String fileName, MultipartFile file){
+    public void logout(HttpServletRequest request, HttpServletResponse response) throws IOException {
-        return personalService.uploadFile(path, fileName, file);
+        HttpSession session = request.getSession(false);
+        if (session != null)
+            session.invalidate();
+        response.sendRedirect("/denied");
     }
 
-    @GetMapping("/private/**")
+    /** 未登录或票据失效时的提示页；纯静态文案，不含任何可推断的信息。 */
-    public void getFile(HttpServletRequest request, HttpServletResponse response, String path){
+    @GetMapping(value = "/denied", produces = MediaType.TEXT_HTML_VALUE)
-        personalService.download(request, response, path);
+    public String denied() {
+        return """
+                <!DOCTYPE html>
+                <html lang="zh-CN">
+                <head>
+                  <meta charset="UTF-8" />
+                  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+                  <title>需要登录 · LionWebsite</title>
+                  <style>
+                    body { margin:0; display:flex; min-height:100vh; align-items:center; justify-content:center;
+                           background:#f6f7f9; color:#1f2328;
+                           font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif; }
+                    .card { max-width:26rem; padding:2rem; background:#fff; border:1px solid #e2e5e9;
+                            border-radius:10px; box-shadow:0 1px 2px rgba(0,0,0,.04); }
+                    h1 { margin:0 0 .75rem; font-size:1.15rem; }
+                    p { margin:0; line-height:1.7; color:#4a5259; }
+                    code { background:#f0f2f5; padding:.1rem .35rem; border-radius:4px; }
+                  </style>
+                </head>
+                <body>
+                  <div class="card">
+                    <h1>需要登录</h1>
+                    <p>请在机器人里发送 <code>/login</code>，用返回的一次性链接打开个人面板。</p>
+                  </div>
+                </body>
+                </html>
+                """;
     }
 
-    @PostMapping("/share")
+    private static String clientIp(HttpServletRequest request) {
-    public String shareFile(String path, Integer expireHour) {
+        String forwarded = request.getHeader("X-Forwarded-For");
-        return personalService.shareFile(path, expireHour);
+        if (forwarded != null && !forwarded.isBlank())
-    }
+            return forwarded.split(",")[0].trim();
-
+        return request.getRemoteAddr();
-    @PostMapping("/compress")
-    public String compress(String path){
-        return personalService.compress(path);
-    }
-
-    @PostMapping("/delete")
-    public String deleteFile(String path){
-        return personalService.deleteFile(path);
-    }
-
-    @PostMapping("/extendShareTime")
-    public String extendShareTime(String path, Integer extendHour) {
-        return personalService.extendShareTime(path, extendHour);
-    }
-
-    @PostMapping("/cancelShare")
-    public String cancelShare(String path){
-        return personalService.cancelShare(path);
     }
 
     @PostMapping("/updateSub")
     public String updateSub() throws IOException {
         Response response = Response.generateResponse();
-        if(localService.updateSub(true))
+        if(localService.updateSub())
             response.success();
         else
             response.failure();
@@ -88,7 +130,7 @@ public class PersonalController {
     }
 
     @GetMapping("/ip")
-    public String ip() throws JsonProcessingException {
+    public String ip() {
         return personalService.getIp();
     }
 

src/main/java/com/lion/lionwebsite/Controller/PublicController.java

@@ -6,7 +6,10 @@ import com.lion.lionwebsite.Service.PublicService;
 import com.lion.lionwebsite.Service.QueryService;
 import com.lion.lionwebsite.Service.RemoteService;
 import com.lion.lionwebsite.Service.SubService;
+import com.lion.lionwebsite.Service.UserService;
+import com.lion.lionwebsite.Util.CustomUtil;
 import com.lion.lionwebsite.Util.Response;
+import tools.jackson.databind.node.ObjectNode;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import lombok.RequiredArgsConstructor;
@@ -15,16 +18,12 @@ import org.springframework.web.bind.annotation.*;
 
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
-import java.util.LinkedList;
-import java.util.List;
 
 @RestController
 @Slf4j
 @RequiredArgsConstructor
 public class PublicController {
 
-    final List<String> black_share_codes = new LinkedList<>();
-
     final PublicService publicService;
 
     final RemoteService remoteService;
@@ -59,32 +58,18 @@ public class PublicController {
         subService.updateSub(response, request, client, key);
     }
 
-    @GetMapping("/GetFile/{path}")
-    public void getFile(HttpServletRequest request, HttpServletResponse response, String ShareCode, @PathVariable("path") String path) throws IOException {
-        synchronized (black_share_codes) {
-            if (black_share_codes.contains(ShareCode))
-                return;
-        }
-
-        log.info("ShareCode:{}", ShareCode);
-        log.info("Path:{}", path);
-        boolean result = publicService.GetFile(request, response, ShareCode);
-
-        if(!result)
-            black_share_codes.add(ShareCode);
-
-        if(black_share_codes.size() > 100)
-            black_share_codes.removeFirst();
-    }
-
     @PostMapping("/validate")
     public String validate(String AuthCode){
         Response response = Response.generateResponse();
         User user = publicService.getUserId(AuthCode);
-        String isAvailable = remoteService.isDead() ? "false": "true";
+        // 身份字段直接作为结构化 data 返回；共享前端解码器兼容旧版本字符串。
-        response.success(String.format("{\"userId\": %d, " +
+        ObjectNode identity = CustomUtil.objectMapper.createObjectNode();
-                                        "\"username\": \"%s\", " +
+        identity.put("userId", user.getId());
-                                        "\"isAvailable\": %s}", user.getId(), user.getUsername(), isAvailable));
+        identity.put("username", user.getUsername());
+        identity.put("isAvailable", !remoteService.isDead());
+        // 管理员标记随登录一起下发，前端据此决定是否显示下载人信息与筛选。
+        identity.put("isAdmin", user.getId() == UserService.ADMIN_USER_ID);
+        response.success(identity);
         return response.toJSONString();
     }
 

src/main/java/com/lion/lionwebsite/Controller/SubController.java

@@ -11,8 +11,8 @@ public class SubController {
     final SubService subService;
 
     @PostMapping("")
-    public String addSubBind(String user){
+    public String addSubBind(String user, Integer accountId){
-        return subService.insertSubBind(user);
+        return subService.insertSubBind(user, accountId);
     }
 
     @PutMapping("")
@@ -34,4 +34,38 @@ public class SubController {
     public String deleteSubBind(String user){
         return subService.deleteSubBind(user);
     }
+
+    @GetMapping("accounts")
+    public String getAccounts(){
+        return subService.listSubscriptionAccounts();
+    }
+
+    @PostMapping("accounts")
+    public String addAccount(String name, String upstreamKey,
+                             @RequestParam(defaultValue = "true") boolean filterHighMultiplier,
+                             @RequestParam(defaultValue = "true") boolean enabled){
+        return subService.insertSubscriptionAccount(name, upstreamKey, filterHighMultiplier, enabled);
+    }
+
+    @PutMapping("accounts/{id}")
+    public String updateAccount(@PathVariable Integer id, String name, String upstreamKey,
+                                @RequestParam(defaultValue = "true") boolean filterHighMultiplier,
+                                @RequestParam(defaultValue = "true") boolean enabled){
+        return subService.updateSubscriptionAccount(id, name, upstreamKey, filterHighMultiplier, enabled);
+    }
+
+    @PostMapping("accounts/{id}/refresh")
+    public String refreshAccount(@PathVariable Integer id){
+        return subService.refreshSubscriptionAccount(id);
+    }
+
+    @DeleteMapping("accounts/{id}")
+    public String deleteAccount(@PathVariable Integer id){
+        return subService.deleteSubscriptionAccount(id);
+    }
+
+    @PutMapping("{user}/account")
+    public String rebind(@PathVariable String user, Integer accountId){
+        return subService.rebind(user, accountId);
+    }
 }

src/main/java/com/lion/lionwebsite/Controller/SubscriptionEventController.java

@@ -0,0 +1,33 @@
+package com.lion.lionwebsite.Controller;
+
+import com.lion.lionwebsite.Service.SubscriptionEventService;
+import jakarta.servlet.http.HttpServletRequest;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.io.IOException;
+import java.util.Map;
+
+@RestController
+public class SubscriptionEventController {
+    private final SubscriptionEventService events;
+
+    public SubscriptionEventController(SubscriptionEventService events) { this.events = events; }
+
+    @PostMapping(value = "/internal/subscription-events", produces = "application/json")
+    public ResponseEntity<Map<String, Object>> ingest(HttpServletRequest request) throws IOException {
+        // Bound actual bytes even for chunked requests and dishonest Content-Length headers.
+        byte[] body = request.getInputStream().readNBytes(SubscriptionEventService.MAX_BODY + 1);
+        if (body.length > SubscriptionEventService.MAX_BODY)
+            return ResponseEntity.badRequest().body(Map.of("error", "invalid subscription events"));
+        if (!events.verify(body, request.getHeader("X-Subscription-Timestamp"), request.getHeader("X-Subscription-Signature")))
+            return ResponseEntity.status(403).body(Map.of("error", "authentication failed"));
+        try {
+            return ResponseEntity.ok(events.ingest(events.parseBatch(body)));
+        } catch (IllegalArgumentException invalid) {
+            return ResponseEntity.badRequest().body(Map.of("error", "invalid subscription events"));
+        }
+        // All infrastructure failures propagate as 5xx; never acknowledge an uncommitted batch.
+    }
+}

src/main/java/com/lion/lionwebsite/Dao/cache/ImageCacheMapper.java

@@ -5,8 +5,11 @@ import com.lion.lionwebsite.Domain.ImageKeyCache;
 import org.apache.ibatis.annotations.Insert;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
+import org.apache.ibatis.annotations.Delete;
 import org.apache.ibatis.annotations.Select;
 
+import java.util.List;
+
 @Mapper
 public interface ImageCacheMapper {
     @Insert("insert into ImageKeyCache values (#{gid}, #{imgkey}, #{page})")
@@ -21,4 +24,41 @@ public interface ImageCacheMapper {
     @Select("select * from gidToKey where gid=#{gid}")
     GidToKey selectKeyByGid(String gid);
 
+    /** 已缓存的页 key 行数，用于判断索引是否完整（半截缓存需要重建）。 */
+    @Select("select count(*) from ImageKeyCache where gid=#{gid}")
+    int countImageKeyCacheByGid(String gid);
+
+    @Delete("delete from ImageKeyCache where gid=#{gid}")
+    void deleteImageKeyCacheByGid(String gid);
+
+    @Delete("delete from gidToKey where gid=#{gid}")
+    void deleteGidToKey(String gid);
+
+    /**
+     * 某个 gid 已落库的页码列表（升序）。
+     *
+     * <p>只按行数判断完整性会把「页码 1 和 3、共 2 行」当成完整索引，
+     * 因此完整性判定改为按页码集合比对——先取回页码，再校验它是否恰好是 1..pages。
+     */
+    @Select("select page from ImageKeyCache where gid=#{gid} order by page")
+    List<Integer> selectPageNumbersByGid(String gid);
+
+    /** 该 gid 下 imgkey 为空的脏行数；任何一行脏行都说明索引不可用。 */
+    @Select("select count(*) from ImageKeyCache where gid=#{gid} and (imgkey is null or trim(imgkey)='')")
+    int countInvalidImageKeysByGid(String gid);
+
+    /**
+     * 批量写入页 key（单条多值 INSERT）。
+     *
+     * <p>整本画廊的索引可能上千页，逐行 INSERT 会拉长写事务并放大锁竞争；
+     * 调用方按固定大小分片后，一个写事务里只需少量语句即可写完。
+     */
+    // MyBatis 只在注解值「以 <script> 开头」时才按 XML 动态 SQL 解析，因此这里不能有前导空白。
+    @Insert("<script>"
+            + "insert into ImageKeyCache (gid, imgkey, page) values "
+            + "<foreach collection='pages' item='p' separator=','>"
+            + "(#{p.gid}, #{p.imgkey}, #{p.page})"
+            + "</foreach>"
+            + "</script>")
+    int insertImageKeyCacheBatch(@Param("pages") List<ImageKeyCache> pages);
 }

src/main/java/com/lion/lionwebsite/Dao/normal/CollectMapper.java

@@ -20,4 +20,8 @@ public interface CollectMapper {
 
     @Select("select collector from collect where gid=#{gid}")
     ArrayList<Integer> selectCollectorByGid(int gid);
+
+    /** 任务删除完成后清理该 gid 的全部收藏记录（与删任务行同一事务）。 */
+    @Delete("delete from collect where gid=#{gid}")
+    void deleteByGid(@Param("gid") int gid);
 }

src/main/java/com/lion/lionwebsite/Dao/normal/CustomConfigurationMapper.java

@@ -16,6 +16,9 @@ public interface CustomConfigurationMapper {
 //    @Delete("delete from customConfiguration where parameter=#{parameter}")
 //    void deleteConfiguration(CustomConfiguration configuration);
 
+    @Update("update customConfiguration set value=cast(value as integer)+#{amount} where parameter=#{parameter}")
+    void incrementConfiguration(@Param("parameter") String parameter, @Param("amount") long amount);
+
     @Select("select * from customConfiguration where parameter=#{parameter}")
     CustomConfiguration selectConfiguration(String parameter);
 }

src/main/java/com/lion/lionwebsite/Dao/normal/GalleryMapper.java

@@ -25,7 +25,7 @@ public interface GalleryMapper {
     @Select("select * from gallery where downloader=#{downloader}")
     Gallery[] selectGalleryByDownloader(int downloader);
 
-    @Select("select * from gallery where status in ('已提交', '下载中', '压缩中')")
+    @Select("select * from gallery where status in ('已提交', '下载中', '等待压缩', '压缩中')")
     Gallery[] selectUnDoneGalleries();
 
     @Select("select * from gallery order by createTime")
@@ -36,9 +36,10 @@ public interface GalleryMapper {
 
 
     @Update("""
-            update gallery set name=#{name}, link=#{link}, language=#{language},
+            update gallery set name=#{name}, link=#{link}, language=#{language}, downloader=#{downloader},
                                     pages=#{pages}, status=#{status}, fileSize=#{fileSize}, createTime=#{createTime},
-                                    proceeding=#{proceeding}, resolution=#{resolution}, displayFileSize=#{displayFileSize}, is_download=#{is_download}
+                                    proceeding=#{proceeding}, resolution=#{resolution}, displayFileSize=#{displayFileSize},
+                                    thumb_link=#{thumb_link}, is_download=#{is_download}
                     where gid=#{gid}""")
     void updateGallery(Gallery gallery);
 
@@ -47,4 +48,8 @@ public interface GalleryMapper {
 
     @Delete("delete from gallery where gid=#{gid}")
     void deleteGalleryByGid(Integer gid);
+
+    /** 只改状态列，用于「待删除」这类不牵动其他字段的意图标记。 */
+    @Update("update gallery set status=#{status} where gid=#{gid}")
+    int updateGalleryStatus(@Param("gid") int gid, @Param("status") String status);
 }

src/main/java/com/lion/lionwebsite/Dao/normal/ShareFileMapper.java

@@ -1,31 +0,0 @@
-package com.lion.lionwebsite.Dao.normal;
-
-import com.lion.lionwebsite.Domain.ShareFile;
-import org.apache.ibatis.annotations.*;
-
-import java.util.ArrayList;
-import java.util.Date;
-
-@Mapper
-public interface ShareFileMapper {
-    @Insert("insert into ShareFile (ShareCode, FilePath, ExpireTime) values (#{ShareCode}, #{FilePath}, #{ExpireTime})")
-    void insertShareFile(@Param("ShareCode")String ShareCode, @Param("FilePath")String FilePath, @Param("ExpireTime") Date ExpireTime);
-
-    @Select("select * from ShareFile where ShareCode=#{ShareCode}")
-    ShareFile selectShareFileByShareCode(String ShareCode);
-
-    @Select("select * from ShareFile where FilePath=#{FilePath}")
-    ShareFile selectShareFileByFilePath(String FilePath);
-
-    @Select("select * from ShareFile where FilePath like '%' || #{FilePath} || '%'")
-    ArrayList<ShareFile> selectShareFilesByFilePath(String FilePath);
-
-    @Delete("delete from ShareFile where ShareCode=#{ShareCode}")
-    void deleteShareFile(String ShareCode);
-
-    @Select("select * from ShareFile")
-    ShareFile[] selectAllShareFile();
-
-    @Update("update ShareFile set ExpireTime=#{ExpireTime}, ShareCode=#{ShareCode} where FilePath=#{FilePath}")
-    void updateShareFile(ShareFile ShareFile);
-}

src/main/java/com/lion/lionwebsite/Dao/normal/SubMapper.java

@@ -2,42 +2,98 @@ package com.lion.lionwebsite.Dao.normal;
 
 import com.lion.lionwebsite.Domain.SubBind;
 import com.lion.lionwebsite.Domain.SubUpdateRecord;
+import com.lion.lionwebsite.Domain.SubscriptionAccount;
 import org.apache.ibatis.annotations.*;
 
 import java.util.ArrayList;
 
 @Mapper
 public interface SubMapper {
-    @Insert("insert into sub_bind values (#{key}, #{user})")
+    @Insert("insert into subscription_account (name, upstream_key, filter_high_multiplier, enabled, created_at, updated_at) values (#{name}, #{upstreamKey}, #{filterHighMultiplier}, #{enabled}, CURRENT_TIMESTAMP, CURRENT_TIMESTAMP)")
+    @Options(useGeneratedKeys = true, keyProperty = "id")
+    void insertSubscriptionAccount(SubscriptionAccount account);
+
+    @Select("select id, name, upstream_key as upstreamKey, filter_high_multiplier as filterHighMultiplier, enabled, last_success_at as lastSuccessAt, last_error as lastError, created_at as createdAt, updated_at as updatedAt, next_refresh_at as nextRefreshAt, last_success_epoch as lastSuccessEpoch, (select count(*) from sub_bind sb where sb.subscription_account_id = sa.id) as boundUserCount from subscription_account sa order by id")
+    ArrayList<SubscriptionAccount> selectAllSubscriptionAccounts();
+
+    @Select("select id, name, upstream_key as upstreamKey, filter_high_multiplier as filterHighMultiplier, enabled, last_success_at as lastSuccessAt, last_error as lastError, created_at as createdAt, updated_at as updatedAt, next_refresh_at as nextRefreshAt, last_success_epoch as lastSuccessEpoch, (select count(*) from sub_bind sb where sb.subscription_account_id = sa.id) as boundUserCount from subscription_account sa where id=#{id}")
+    SubscriptionAccount selectSubscriptionAccount(Integer id);
+
+    @Select("select count(*) from subscription_account where name=#{name}")
+    int countSubscriptionAccountName(String name);
+
+    @Select("select count(*) from subscription_account where upstream_key=#{upstreamKey}")
+    int countSubscriptionAccountKey(String upstreamKey);
+
+    @Update("update subscription_account set name=#{name}, upstream_key=#{upstreamKey}, filter_high_multiplier=#{filterHighMultiplier}, enabled=#{enabled}, updated_at=CURRENT_TIMESTAMP, last_error=null where id=#{id}")
+    void updateSubscriptionAccount(SubscriptionAccount account);
+
+    // last_success_at 仍写 SQLite 的 UTC 文本时间，仅供页面显示；
+    // last_success_epoch 是调度判断用的权威时刻，两者口径不同，不要互相推导。
+    @Update("update subscription_account set last_success_at=CURRENT_TIMESTAMP, last_success_epoch=#{epoch}, last_error=null, updated_at=CURRENT_TIMESTAMP where id=#{id}")
+    void markSubscriptionRefreshSuccess(@Param("id") Integer id, @Param("epoch") long epoch);
+
+    @Update("update subscription_account set last_error=#{error}, updated_at=CURRENT_TIMESTAMP where id=#{id}")
+    void markSubscriptionRefreshFailure(@Param("id") Integer id, @Param("error") String error);
+
+    /** 排定下一次刷新时刻；失败重试与次日分槽都走这里。 */
+    @Update("update subscription_account set next_refresh_at=#{nextRefreshAt}, updated_at=CURRENT_TIMESTAMP where id=#{id}")
+    void updateNextRefreshAt(@Param("id") Integer id, @Param("nextRefreshAt") long nextRefreshAt);
+
+    @Delete("delete from subscription_account where id=#{id}")
+    void deleteSubscriptionAccount(Integer id);
+
+    @Insert("insert into sub_bind (key, user, subscription_account_id, user_id) values (#{key}, #{user}, #{subscriptionAccountId}, (select id from User where username=#{user}))")
     void insertSubBind(SubBind subBind);
 
-    @Select("select * from sub_bind")
+    @Select("select sb.key, coalesce(u.username, sb.user) as user, sb.user_id as userId, sb.subscription_account_id as subscriptionAccountId, sa.name as subscriptionAccountName, sa.enabled as subscriptionAccountEnabled, sa.filter_high_multiplier as filterHighMultiplier from sub_bind sb left join User u on u.id=sb.user_id left join subscription_account sa on sa.id=sb.subscription_account_id order by sb.user")
     ArrayList<SubBind> selectAllSubBind();
 
-    @Select("select * from sub_bind where key=#{key}")
+    @Select("select sb.key, coalesce(u.username, sb.user) as user, sb.user_id as userId, sb.subscription_account_id as subscriptionAccountId, sa.name as subscriptionAccountName, sa.enabled as subscriptionAccountEnabled, sa.filter_high_multiplier as filterHighMultiplier from sub_bind sb left join User u on u.id=sb.user_id left join subscription_account sa on sa.id=sb.subscription_account_id where sb.key=#{key}")
     SubBind selectSubBind(String key);
 
     @Select("select count(key) from sub_bind where key=#{key}")
     boolean selectSubBindExist(String key);
 
-    @Select("select count(user) from sub_update_record where user=#{user}")
+    @Select("select count(*) from sub_bind where user_id=(select id from User where username=#{user}) or (user_id is null and user=#{user})")
-    Integer selectUpdateRecordCount(String user);
+    int countSubBindByUser(String user);
 
-    @Select("select min(id) from sub_update_record where user=#{user}")
+    @Update("update sub_bind set subscription_account_id=#{accountId} where user_id=(select id from User where username=#{user}) or (user_id is null and user=#{user})")
-    Integer selectMinUpdateRecordId(String user);
+    int updateSubBindAccount(@Param("user") String user, @Param("accountId") Integer accountId);
 
-    @Delete("delete from sub_bind where user=#{user}")
+    @Update("update sub_bind set key=#{key} where user_id=(select id from User where username=#{user}) or (user_id is null and user=#{user})")
+    int updateSubBindKey(@Param("user") String user, @Param("key") String key);
+
+    @Delete("delete from sub_bind where user_id=(select id from User where username=#{user}) or (user_id is null and user=#{user})")
     void deleteSubBind(String user);
 
-    @Insert("insert into sub_update_record (user, ip, UA, time, location) values (#{user}, #{ip}, #{UA}, #{time}, #{location})")
+    @Insert("insert into sub_update_record (user, ip, UA, time, location, user_id) values (#{user}, #{ip}, #{UA}, #{time}, #{location}, coalesce(#{userId}, (select id from User where username=#{user})))")
+    @Options(useGeneratedKeys = true, keyProperty = "id")
     void insertSubUpdateRecord(SubUpdateRecord subUpdateRecord);
 
-    @Select("select * from sub_update_record order by time desc")
+    @Select("select id,user,ip,UA,time,location,user_id as userId from sub_update_record order by time desc")
     ArrayList<SubUpdateRecord> selectAllSubUpdateRecord();
 
-    @Delete("delete from sub_update_record where user=#{user}")
+    @Delete("delete from sub_update_record where user_id=(select id from User where username=#{user}) or (user_id is null and user=#{user})")
     void deleteSubUpdateRecord(String user);
 
+    @Select("select count(user) from sub_update_record where user_id=(select id from User where username=#{user}) or (user_id is null and user=#{user})")
+    Integer selectUpdateRecordCount(String user);
+
+    @Select("select id from sub_update_record where user_id=(select id from User where username=#{user}) or (user_id is null and user=#{user}) order by time asc,id asc limit 1")
+    Integer selectMinUpdateRecordId(String user);
+
+    /** 后台补齐归属地：只更新该用户最近一条记录，避免覆盖更早的历史记录。 */
+    @Update("update sub_update_record set location=#{location} where id=(select max(id) from sub_update_record where user_id=(select id from User where username=#{user}) or (user_id is null and user=#{user}))")
+    void updateLatestSubUpdateRecordLocation(@Param("user") String user, @Param("location") String location);
+
+    @Update("update sub_update_record set location=#{location} where id=#{id}")
+    void updateSubUpdateRecordLocation(@Param("id") int id, @Param("location") String location);
+
+    @Update("update sub_bind set user=#{newName} where user_id=#{userId} or (user_id is null and user=#{oldName})")
+    void renameBoundUser(@Param("userId") int userId, @Param("oldName") String oldName,
+                         @Param("newName") String newName);
+
     @Delete("delete from sub_update_record where id=#{id}")
     void deleteSubUpdateRecordById(int id);
 }

src/main/java/com/lion/lionwebsite/Dao/normal/SubscriptionEventMapper.java

@@ -0,0 +1,35 @@
+package com.lion.lionwebsite.Dao.normal;
+
+import com.lion.lionwebsite.Domain.SubscriptionEvent;
+import com.lion.lionwebsite.Domain.SubUpdateRecord;
+import com.lion.lionwebsite.Domain.SubscriptionEventBinding;
+import org.apache.ibatis.annotations.*;
+
+@Mapper
+public interface SubscriptionEventMapper {
+    /** Reserve SQLite's writer before the receipt read; a deferred read-to-write upgrade can fail immediately. */
+    @Update("update subscription_event_receipt set ingested_at=ingested_at where 0")
+    void reserveWriter();
+
+    @Select("select fingerprint from subscription_event_receipt where event_id=#{eventId}")
+    String fingerprint(String eventId);
+
+    @Insert("insert into subscription_event_receipt(event_id,key_hash,client,occurred_at,source,ingested_at,fingerprint,outcome) values(#{event.eventId},#{event.keyHash},#{event.client},#{event.occurredAt},#{source},#{ingestedAt},#{fingerprint},#{outcome})")
+    void insertReceipt(@Param("event") SubscriptionEvent event, @Param("source") String source,
+                       @Param("ingestedAt") long ingestedAt, @Param("fingerprint") String fingerprint,
+                       @Param("outcome") String outcome);
+
+    @Select("select key_hash as keyHash,user_id as userId,user_name as userName from subscription_event_binding where key_hash=#{hash}")
+    SubscriptionEventBinding binding(String hash);
+
+    @Insert("insert into subscription_event_binding(key_hash,user_id,user_name,first_seen_at,last_seen_at) values(#{hash},#{userId},#{userName},#{now},#{now}) on conflict(key_hash) do update set user_name=excluded.user_name,last_seen_at=excluded.last_seen_at where subscription_event_binding.user_id IS excluded.user_id")
+    void rememberBinding(@Param("hash") String hash, @Param("userId") Integer userId,
+                         @Param("userName") String userName, @Param("now") long now);
+
+    @Insert("insert into sub_update_record(user,ip,UA,time,location,user_id) values(#{user},#{ip},#{UA},#{time},#{location},#{userId})")
+    @Options(useGeneratedKeys = true, keyProperty = "id")
+    void insertRecord(SubUpdateRecord record);
+
+    @Delete("delete from sub_update_record where (user_id=#{userId} or (user_id is null and user=#{userName})) and id not in (select id from sub_update_record where user_id=#{userId} or (user_id is null and user=#{userName}) order by time desc,id desc limit 10)")
+    void pruneRecords(@Param("userId") Integer userId, @Param("userName") String userName);
+}

src/main/java/com/lion/lionwebsite/Dao/normal/TaskOperationRepository.java

@@ -0,0 +1,107 @@
+package com.lion.lionwebsite.Dao.normal;
+
+import com.lion.lionwebsite.Domain.TaskOperation;
+import org.apache.ibatis.annotations.*;
+
+/**
+ * 任务操作记录的持久化入口（主库）。
+ *
+ * <p>所有写操作都在调用方的事务里执行；这里的注解只描述 SQL，不包含业务判断。
+ * 主键为 gid，保证「同一 gid 只能有一条有效操作意图」。
+ */
+@Mapper
+public interface TaskOperationRepository {
+
+    @Select("select * from task_operation where gid=#{gid}")
+    TaskOperation selectByGid(int gid);
+
+    /** 生成该 gid 的稳定下载 operationId：只有还没有记录时才写入。 */
+    @Insert("insert or ignore into task_operation (gid, operationId, deleteOperationId, state, lastRevision," +
+            " lastReportId, updateTime) values (#{gid}, #{operationId}, null, #{state}, 0, null, #{updateTime})")
+    int insertIfAbsent(@Param("gid") int gid, @Param("operationId") String operationId,
+                       @Param("state") String state, @Param("updateTime") long updateTime);
+
+    @Insert("insert into task_operation (gid, operationId, deleteOperationId, state, lastRevision, lastReportId, updateTime)" +
+            " values (#{gid}, #{operationId}, #{deleteOperationId}, #{state}, #{lastRevision}, #{lastReportId}, #{updateTime})")
+    void insert(TaskOperation operation);
+
+    /** 推进创建意图的状态（RESERVED → SUBMITTING → SUBMITTED/UNKNOWN）。 */
+    @Update("update task_operation set state=#{state}, updateTime=#{updateTime} where gid=#{gid}")
+    int updateState(@Param("gid") int gid, @Param("state") String state, @Param("updateTime") long updateTime);
+
+    /**
+     * 带前置条件的创建状态推进：只有当前状态与 operationId 都匹配时才写入。
+     *
+     * <p>这是「提交前先确认这一代意图仍然有效」的 CAS：若期间被删除/重建，
+     * 返回值 0，调用方必须停下，绝不能再产生上游副作用。
+     */
+    @Update("update task_operation set state=#{state}, updateTime=#{updateTime}" +
+            " where gid=#{gid} and operationId=#{operationId} and state=#{expectedState}")
+    int compareAndSetCreateState(@Param("gid") int gid, @Param("operationId") String operationId,
+                                 @Param("expectedState") String expectedState, @Param("state") String state,
+                                 @Param("updateTime") long updateTime);
+
+    /**
+     * 只按当前删除意图 ID 匹配的删除完成：期间若已被删除/重建，则不改动新世代记录。
+     */
+    @Update("update task_operation set deleteOperationId=null, state=#{state}, updateTime=#{updateTime}" +
+            " where gid=#{gid} and deleteOperationId=#{deleteOperationId}")
+    int completeDeleteIfSameGeneration(@Param("gid") int gid, @Param("deleteOperationId") String deleteOperationId,
+                                       @Param("state") String state, @Param("updateTime") long updateTime);
+
+    /**
+     * 删除「本次创建意图」的预占记录：必须同时匹配 gid 与 operationId，且状态仍是
+     * RESERVED/SUBMITTING。
+     *
+     * <p>三重匹配保证释放流程只能清掉自己那一代：期间被删除/重建（新 operationId 或墓碑）
+     * 的记录一律不动，避免把新世代抹掉。
+     */
+    @Delete("delete from task_operation where gid=#{gid} and operationId=#{operationId}" +
+            " and state in ('RESERVED','SUBMITTING')")
+    int deleteReservationIfSameGeneration(@Param("gid") int gid, @Param("operationId") String operationId);
+
+    /** 记录/替换当前下载 operationId 并推进状态。 */
+    @Update("update task_operation set operationId=#{operationId}, state=#{state}, updateTime=#{updateTime} where gid=#{gid}")
+    int updateOperationId(@Param("gid") int gid, @Param("operationId") String operationId,
+                          @Param("state") String state, @Param("updateTime") long updateTime);
+
+    /**
+     * 给「有记录但缺 operationId」的历史任务补一个稳定 operationId。
+     * 只在确实缺失时写入，避免覆盖并发创建出来的新世代。
+     */
+    @Update("update task_operation set operationId=#{operationId}, updateTime=#{updateTime}" +
+            " where gid=#{gid} and operationId is null")
+    int assignOperationIdIfMissing(@Param("gid") int gid, @Param("operationId") String operationId,
+                                   @Param("updateTime") long updateTime);
+
+    /**
+     * 墓碑复活：删除完成后的 gid 允许用全新 operationId 重新创建。
+     * revision 与回执一并清零，旧操作的迟到上报会因 operationId 不匹配被丢弃。
+     */
+    @Update("update task_operation set operationId=#{operationId}, deleteOperationId=null, state=#{state}," +
+            " lastRevision=0, lastReportId=null, updateTime=#{updateTime} where gid=#{gid}")
+    int reactivate(@Param("gid") int gid, @Param("operationId") String operationId,
+                   @Param("state") String state, @Param("updateTime") long updateTime);
+
+    /** 记录删除意图与其稳定的删除操作 ID（重试必须复用同一个 ID）。 */
+    @Update("update task_operation set deleteOperationId=#{deleteOperationId}, state=#{state}, updateTime=#{updateTime} where gid=#{gid}")
+    int updateDeleteIntent(@Param("gid") int gid, @Param("deleteOperationId") String deleteOperationId,
+                           @Param("state") String state, @Param("updateTime") long updateTime);
+
+    /**
+     * 写入状态上报回执（revision + reportId）。
+     *
+     * <p>回执与任务行更新在同一个事务里提交，提交成功之后才回 ACK；
+     * 因此节点重复投递同一份上报时，只能看到已经提交过的回执，不会重复落库或重复通知。
+     */
+    @Update("update task_operation set lastRevision=#{revision}, lastReportId=#{reportId}, updateTime=#{updateTime}" +
+            " where gid=#{gid}")
+    int updateReportReceipt(@Param("gid") int gid, @Param("revision") long revision,
+                            @Param("reportId") String reportId, @Param("updateTime") long updateTime);
+
+    @Select("select * from task_operation where state=#{state}")
+    java.util.List<TaskOperation> selectByState(String state);
+
+    @Delete("delete from task_operation where gid=#{gid}")
+    int deleteByGid(int gid);
+}

src/main/java/com/lion/lionwebsite/Dao/normal/UserMapper.java

@@ -11,10 +11,23 @@ public interface UserMapper {
     @Select("select * from User where AuthCode=#{AuthCode}")
     User selectUserByAuthCode(String AuthCode);
 
+    @Select("select * from User where username=#{username}")
+    User selectUserByUsername(String username);
+
+    @Select("select * from User where id=#{id}")
+    User selectUserById(int id);
+
     @Select("select AuthCode from User")
     String[] selectAllAuthCode();
 
-    @Select("select AuthCode from User")
+    /**
+     * 仅返回仍启用的授权码。
+     *
+     * <p>此前这条 SQL 与 {@link #selectAllAuthCode()} 完全相同（都没有 isEnable 条件），
+     * 于是「停用用户」后刷新授权码集合依旧把该码放行，isEnable 形同虚设。
+     * isEnable 为空按 DDL 默认值 true 处理，避免历史行被锁死。
+     */
+    @Select("select AuthCode from User where isEnable is null or isEnable = 1")
     String[] selectEnableAuthCode();
 
     @Select("select * from User")

src/main/java/com/lion/lionwebsite/Domain/Gallery.java

@@ -48,6 +48,11 @@ public class Gallery {
     @JsonProperty("downloader")
     private int downloader;                              //下载人
 
+    /** 下载人昵称。仅管理员查询时填充，普通用户拿不到，避免暴露他人信息。 */
+    @JsonProperty("downloaderName")
+    @JsonInclude(JsonInclude.Include.NON_EMPTY)
+    private String downloaderName;
+
     @JsonProperty("collector")
     @JsonInclude(JsonInclude.Include.NON_EMPTY)
     private String collector;                               //收藏人

src/main/java/com/lion/lionwebsite/Domain/ShareFile.java

@@ -1,12 +0,0 @@
-package com.lion.lionwebsite.Domain;
-
-import lombok.Data;
-
-import java.util.Date;
-
-@Data
-public class ShareFile {
-    String ShareCode;
-    String FilePath;
-    Date ExpireTime;
-}

src/main/java/com/lion/lionwebsite/Domain/SubBind.java

@@ -10,4 +10,14 @@ import lombok.NoArgsConstructor;
 public class SubBind {
     String key;
     String user;
+    Integer subscriptionAccountId;
+    String subscriptionAccountName;
+    boolean subscriptionAccountEnabled;
+    boolean filterHighMultiplier;
+    Integer userId;
+
+    public SubBind(String key, String user, Integer accountId, String accountName,
+                   boolean accountEnabled, boolean filterHighMultiplier) {
+        this(key, user, accountId, accountName, accountEnabled, filterHighMultiplier, null);
+    }
 }

src/main/java/com/lion/lionwebsite/Domain/SubUpdateRecord.java

@@ -16,4 +16,9 @@ public class SubUpdateRecord {
     String UA;
     Date time;
     String location;
+    Integer userId;
+
+    public SubUpdateRecord(int id, String user, String ip, String UA, Date time, String location) {
+        this(id, user, ip, UA, time, location, null);
+    }
 }

src/main/java/com/lion/lionwebsite/Domain/SubscriptionAccount.java

@@ -0,0 +1,31 @@
+package com.lion.lionwebsite.Domain;
+
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.Date;
+
+@Data
+@NoArgsConstructor
+public class SubscriptionAccount {
+    private Integer id;
+    private String name;
+    private String upstreamKey;
+    private boolean filterHighMultiplier;
+    private boolean enabled;
+    private Date lastSuccessAt;
+    private String lastError;
+    private Date createdAt;
+    private Date updatedAt;
+    private Integer boundUserCount;
+    private String v2Url;
+    private String clashUrl;
+    /**
+     * 下一次应刷新的时刻（Epoch 毫秒），由分散调度器排定。
+     * 刻意用整数而非 DATETIME：SQLite 文本时间戳会被 JDBC 按本地时区解释，
+     * 实测偏差 8 小时，不能用于时间比较。
+     */
+    private Long nextRefreshAt;
+    /** 最近一次成功刷新的真实时刻（Epoch 毫秒），用于「24 小时内必刷一次」的判断与陈旧告警。 */
+    private Long lastSuccessEpoch;
+}

src/main/java/com/lion/lionwebsite/Domain/SubscriptionEvent.java

@@ -0,0 +1,16 @@
+package com.lion.lionwebsite.Domain;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+
+/** Validated, authenticated event. Never contains the public subscription key. */
+@Data
+@AllArgsConstructor
+public class SubscriptionEvent {
+    private String eventId;
+    private String keyHash;
+    private String client;
+    private String clientIp;
+    private String userAgent;
+    private long occurredAt;
+}

src/main/java/com/lion/lionwebsite/Domain/SubscriptionEventBinding.java

@@ -0,0 +1,10 @@
+package com.lion.lionwebsite.Domain;
+
+import lombok.Data;
+
+@Data
+public class SubscriptionEventBinding {
+    private String keyHash;
+    private Integer userId;
+    private String userName;
+}

src/main/java/com/lion/lionwebsite/Domain/TaskOperation.java

@@ -0,0 +1,53 @@
+package com.lion.lionwebsite.Domain;
+
+import lombok.Data;
+
+/**
+ * 单个 gid 的下载生命周期操作记录（协议 v2 的持久化意图）。
+ *
+ * <p>这张表是「先持久化意图、再产生外部副作用」的落点：
+ * <ul>
+ *   <li>CREATE 意图先于上游 POST 落库，用来保证同一 gid 只有一个未完成意图；</li>
+ *   <li>提交结果不确定时只能停在 {@link #STATE_UNKNOWN}，绝不自动重复上游 POST；</li>
+ *   <li>DELETE 意图先于节点删除落库，节点确认后（或文件已不存在）才在同一事务里删任务行并留墓碑。</li>
+ * </ul>
+ *
+ * <p>旧任务行没有对应操作记录，查询时按 gid 惰性补建（见 GalleryTaskLifecycleService）。
+ */
+@Data
+public class TaskOperation {
+
+    /** 已登记创建意图，尚未向上游提交。 */
+    public static final String STATE_RESERVED = "RESERVED";
+    /** 正在向上游提交；此时不可再发第二次 POST。 */
+    public static final String STATE_SUBMITTING = "SUBMITTING";
+    /** 上游确认已接受下载请求。 */
+    public static final String STATE_SUBMITTED = "SUBMITTED";
+    /**
+     * 提交结果未知：超时、断连或在 SUBMITTING 期间重启。
+     * 上游不支持幂等，因此这里只能等对账（reconcile），不能自动重发。
+     */
+    public static final String STATE_UNKNOWN = "UNKNOWN";
+    /** 已登记删除意图，等待节点确认。 */
+    public static final String STATE_DELETE_PENDING = "DELETE_PENDING";
+    /** 节点已确认删除，任务行也随之删除；本行作为墓碑保留，用于停止迟到状态的重放。 */
+    public static final String STATE_DELETED = "DELETED";
+
+    private int gid;
+
+    /** 当前有效的下载操作 ID；同一 gid 的 DOWNLOAD 重试必须复用它。 */
+    private String operationId;
+
+    /** 独立于下载操作 ID 的删除操作 ID，删除重试复用它。 */
+    private String deleteOperationId;
+
+    private String state;
+
+    /** 最近一次应用的状态上报 revision；用于丢弃乱序/重放的旧上报。 */
+    private long lastRevision;
+
+    /** 节点已确认收到的最新上报 ID；用于重复 ACK 的幂等判断。 */
+    private String lastReportId;
+
+    private long updateTime;
+}

src/main/java/com/lion/lionwebsite/Exception/GalleryIndexException.java

@@ -0,0 +1,44 @@
+package com.lion.lionwebsite.Exception;
+
+/**
+ * 图片索引构建失败。
+ *
+ * <p>调用方需要区分三类结果，才能给出正确的用户可见响应：
+ * 链接本身有问题（{@link Reason#INVALID_LINK}，属于请求错误）、
+ * 画廊已不存在（{@link Reason#UNAVAILABLE}，重试无意义）、
+ * 上游或数据库暂时不可用（{@link Reason#TRANSIENT}，可以重试）。
+ */
+public class GalleryIndexException extends Exception {
+
+    public enum Reason {
+        /** 链接无法解析出 gid 或 key。 */
+        INVALID_LINK,
+        /** 上游明确表示画廊不存在（下架/删除/解析不到页 key）。 */
+        UNAVAILABLE,
+        /** 上游返回的页 key 无法自洽（gid 不匹配、页码重复/跳号、imgkey 为空）。 */
+        MALFORMED,
+        /** 上游波动或索引写入失败，重试可能成功。 */
+        TRANSIENT
+    }
+
+    private final Reason reason;
+
+    public GalleryIndexException(Reason reason, String message) {
+        super(message);
+        this.reason = reason;
+    }
+
+    public GalleryIndexException(Reason reason, String message, Throwable cause) {
+        super(message, cause);
+        this.reason = reason;
+    }
+
+    public Reason getReason() {
+        return reason;
+    }
+
+    /** 重试没有意义（链接错误或画廊不可用）；上游数据畸形与会话级故障仍可重试。 */
+    public boolean isPermanent() {
+        return reason == Reason.INVALID_LINK || reason == Reason.UNAVAILABLE;
+    }
+}

src/main/java/com/lion/lionwebsite/Filter/AdaptorFilter.java

@@ -7,11 +7,15 @@ import jakarta.servlet.http.HttpServletResponse;
 import lombok.extern.slf4j.Slf4j;
 
 import java.io.IOException;
-import java.util.Calendar;
+import java.time.LocalTime;
+import java.time.format.DateTimeFormatter;
 
 @WebFilter(filterName = "AdaptorFilter", urlPatterns = {"/", "/personal/"})
 @Slf4j
 public class AdaptorFilter implements Filter {
+
+    private static final DateTimeFormatter TIME_FORMATTER = DateTimeFormatter.ofPattern("HH:mm:ss");
+
     @Override
     public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
         HttpServletRequest request = (HttpServletRequest) servletRequest;
@@ -22,14 +26,15 @@ public class AdaptorFilter implements Filter {
         if(UserAgent == null)
             return;
 
-        String AuthCode = request.getParameter("AuthCode") == null ? "null" : request.getParameter("AuthCode");
+        // 这里是全站请求日志，AuthCode 是真正的凭据；只记录是否携带，绝不落明文。
+        boolean hasAuthCode = request.getParameter("AuthCode") != null;
         String ServletPath = request.getServletPath();
         String ip = request.getHeader("X-Forwarded-For") == null ? request.getRemoteAddr(): request.getHeader("X-Forwarded-For");
-        Calendar calendar = Calendar.getInstance();
+        String now = LocalTime.now().format(TIME_FORMATTER);
-        String now = String.format("%s:%s:%s", calendar.get(Calendar.HOUR_OF_DAY), calendar.get(Calendar.MINUTE), calendar.get(Calendar.SECOND));
 
         //日志
-        log.info("{} ip:{}  \tpath:{}  \tAuthCode:{} ua:{}", now, ip, ServletPath, AuthCode, UserAgent.length() > 61 ? UserAgent.substring(0, 60): UserAgent);
+        log.info("{} ip:{}  \tpath:{}  \tAuthCode:{} ua:{}", now, ip, ServletPath,
+                hasAuthCode ? "present" : "absent", UserAgent.length() > 61 ? UserAgent.substring(0, 60): UserAgent);
 
         //如果是验证，则直接跳转
         if(ServletPath.equals("/validate"))
@@ -37,7 +42,7 @@ public class AdaptorFilter implements Filter {
 
         //如果不是，则根据UA判断是否跳转
         else if ((UserAgent.contains("Android") || UserAgent.contains("iPhone")))
-            if (ServletPath.equals("/personal/") && AuthCode.equals("alone"))
+            if (ServletPath.equals("/personal/") && "alone".equals(request.getParameter("AuthCode")))
                     response.sendRedirect("/mobile?AuthCode=alone");
             else
                 response.sendRedirect("/mobile");

src/main/java/com/lion/lionwebsite/Interceptor/PersonalInterceptor.java

@@ -2,13 +2,40 @@ package com.lion.lionwebsite.Interceptor;
 
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
+import jakarta.servlet.http.HttpSession;
 import org.springframework.web.servlet.HandlerInterceptor;
 
 
+/**
+ * 个人管理区的访问闸门：有效会话或合法 AuthCode。
+ *
+ * <p>会话来自机器人签发的登录链接（见 {@code PanelLoginTicket} 与
+ * {@code /personal/login}）；固定的 {@code alone} 授权码保留给下载器与存储节点推送，
+ * 因此这里两条路径都放行，等那些调用方切换完成后再退役字面量。
+ */
 public class PersonalInterceptor implements HandlerInterceptor {
 
+    /** 会话标记：{@code /personal/login} 校验票据后写入。 */
+    public static final String SESSION_ATTRIBUTE = "personalAuthenticated";
+
     @Override
     public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler){
-        return request.getParameter("AuthCode") != null && request.getParameter("AuthCode").equals("alone");
+        if (authenticatedSession(request))
+            return true;
+
+        String authCode = request.getParameter("AuthCode");
+        if (authCode != null && authCode.equals("alone"))
+            return true;
+
+        // 会话缺失或过期时回 401，前端据此提示「去机器人发 /login」而不是静默失败。
+        response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
+        return false;
+    }
+
+    /** 只认服务端写入的会话标记，不信任客户端可伪造的 Cookie 内容。 */
+    public static boolean authenticatedSession(HttpServletRequest request) {
+        // 已有会话才可能已登录；不调用 getSession()，以免为匿名访问创建空会话。
+        HttpSession session = request.getSession(false);
+        return session != null && Boolean.TRUE.equals(session.getAttribute(SESSION_ATTRIBUTE));
     }
 }

src/main/java/com/lion/lionwebsite/Interceptor/TaskHandlerInterceptor.java

@@ -16,7 +16,9 @@ public class TaskHandlerInterceptor implements HandlerInterceptor {
 
     final UserMapper userMapper;
 
-    String[] AuthCodes;
+    // 由 PostConstruct 加载后仅被读（发布式更新）与被测试线程读取；
+    // volatile 保证 refresh 后其它线程立即看到新数组，避免停用的授权码短暂仍可用。
+    volatile String[] AuthCodes;
 
     @PostConstruct
     void init() {

src/main/java/com/lion/lionwebsite/LionWebsiteApplication.java

@@ -5,7 +5,7 @@ import org.mybatis.spring.annotation.MapperScan;
 import org.mybatis.spring.annotation.MapperScans;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
-import org.springframework.boot.web.servlet.ServletComponentScan;
+import org.springframework.boot.web.server.servlet.context.ServletComponentScan;
 import org.springframework.scheduling.annotation.EnableScheduling;
 
 @SpringBootApplication

src/main/java/com/lion/lionwebsite/Maintenance/GalleryIndexMaintenance.java

@@ -0,0 +1,319 @@
+package com.lion.lionwebsite.Maintenance;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.time.Instant;
+import java.util.ArrayList;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * 缓存库图片索引的离线体检与修复工具。
+ *
+ * <p>它是独立可执行类（只用 JDBC，不依赖 Spring / MyBatis），因此可以在服务停止后
+ * 直接对数据库文件运行，也可以先对生产库的副本演练。</p>
+ *
+ * <pre>
+ *   java -cp sqlite-jdbc.jar GalleryIndexMaintenance.java --db /path/cache.db
+ *   java -cp sqlite-jdbc.jar GalleryIndexMaintenance.java --db /path/cache.db --apply
+ * </pre>
+ *
+ * <p>它只做两类写入：删除不完整或有冲突的 gid 整组索引（gidToKey 头部加该 gid 的全部
+ * 页 key），以及删除没有头部记录的孤儿页 key。被删掉的 gid 由下一次在线阅读重新抓取，
+ * 因此不需要猜测保留哪一组 key。工具不建表、不改列、不碰其它业务表。</p>
+ */
+public final class GalleryIndexMaintenance {
+
+    /** 生产运行时数据库所在目录；默认拒绝直接写入，必须显式加 --allow-production。 */
+    private static final String PRODUCTION_DIR = "/home/lionwebsite";
+
+    private static final String PLAIN_REPAIR_NOTE =
+            "这些画廊将在下次被访问时重新抓取。";
+
+    public static void main(String[] args) {
+        Map<String, String> options = parseOptions(args);
+        if (options.containsKey("help") || !options.containsKey("db")) {
+            printUsage();
+            System.exit(options.containsKey("help") ? 0 : 2);
+            return;
+        }
+
+        Path database = Path.of(options.get("db")).toAbsolutePath().normalize();
+        boolean apply = options.containsKey("apply");
+        if (!Files.isRegularFile(database)) {
+            System.err.println("数据库不存在: " + database);
+            System.exit(2);
+            return;
+        }
+        if (apply && isProductionPath(database) && !options.containsKey("allow-production")) {
+            System.err.println("拒绝写入生产库路径 " + database
+                    + "。请先在副本上演练；确需在本机生产库执行时显式加 --allow-production，"
+                    + "并确保服务已停止。");
+            System.exit(3);
+            return;
+        }
+
+        try (Connection connection = open(database)) {
+            Report before = inspect(connection);
+            System.out.println(before.render(apply ? "修复前" : "体检结果"));
+
+            if (!apply) {
+                System.out.println();
+                System.out.println("dry-run：未做任何写入。确认无误后加 --apply 执行修复。");
+                System.exit(before.isHealthy() ? 0 : 1);
+                return;
+            }
+
+            if (before.isHealthy()) {
+                System.out.println();
+                System.out.println("索引已健康，无需修复。");
+                return;
+            }
+
+            connection.setAutoCommit(false);
+            int removed = repair(connection, before.badGids, before.orphanGids);
+            connection.commit();
+            System.out.println();
+            System.out.println("已删除 " + removed + " 个 gid 的索引整组，" + PLAIN_REPAIR_NOTE);
+
+            Report after = inspect(connection);
+            System.out.println();
+            System.out.println(after.render("修复后"));
+            if (!after.isHealthy()) {
+                System.err.println("修复后仍未达到健康状态，请人工检查。");
+                System.exit(4);
+            }
+        } catch (SQLException e) {
+            System.err.println("执行失败: " + e.getMessage());
+            e.printStackTrace(System.err);
+            System.exit(5);
+        }
+    }
+
+    private static Connection open(Path database) throws SQLException {
+        Connection connection = DriverManager.getConnection("jdbc:sqlite:" + database);
+        try (Statement statement = connection.createStatement()) {
+            statement.execute("pragma busy_timeout=5000");
+            statement.execute("pragma foreign_keys=off");
+        }
+        return connection;
+    }
+
+    /** 是否位于生产运行时目录；工具据此拒绝在未显式确认时写入生产库。 */
+    static boolean isProductionPath(Path database) {
+        return database.startsWith(Path.of(PRODUCTION_DIR).toAbsolutePath().normalize());
+    }
+
+    // ---------- 体检 ----------
+
+    static Report inspect(Connection connection) throws SQLException {
+        Report report = new Report();
+        report.hasHeaderTable = tableExists(connection, "gidToKey");
+        report.hasPageTable = tableExists(connection, "ImageKeyCache");
+        if (!report.hasHeaderTable || !report.hasPageTable)
+            return report;
+
+        report.headerRows = count(connection, "select count(*) from gidToKey");
+        report.pageRows = count(connection, "select count(*) from ImageKeyCache");
+        report.duplicateHeaderGids = count(connection,
+                "select count(*) from (select gid from gidToKey group by gid having count(*) > 1)");
+        report.duplicatePageGroups = count(connection,
+                "select count(*) from (select gid, page from ImageKeyCache group by gid, page having count(*) > 1)");
+
+        try (PreparedStatement statement = connection.prepareStatement(BAD_GID_QUERY);
+             ResultSet rows = statement.executeQuery()) {
+            while (rows.next()) {
+                String gid = rows.getString(1);
+                report.badGids.add(gid);
+                report.badReasons.put(gid, describe(rows));
+            }
+        }
+
+        try (PreparedStatement statement = connection.prepareStatement(
+                "select distinct gid from ImageKeyCache where gid not in (select gid from gidToKey)");
+             ResultSet rows = statement.executeQuery()) {
+            while (rows.next())
+                report.orphanGids.add(rows.getString(1));
+        }
+        return report;
+    }
+
+    /**
+     * 一个 gid 触发的全部不健康条件集中在一句里检查，避免多次全表扫描。
+     *
+     * <p>必须按 gid 分组后再判断：重复 gid（同一 gid 有多条头部记录）本身就是要清除的对象，
+     * 而重复行里的某一条可能恰好与页 key 数一致，逐行判断会把它当成健康记录漏掉。
+     */
+    private static final String BAD_GID_QUERY = """
+            select g.gid as gid,
+                   count(*) as header_rows,
+                   max(g.pages) as pages,
+                   min(g.key) as key,
+                   (select count(*) from ImageKeyCache i where i.gid = g.gid) as page_rows,
+                   (select count(distinct i.page) from ImageKeyCache i where i.gid = g.gid) as distinct_pages,
+                   (select coalesce(min(i.page), 0) from ImageKeyCache i where i.gid = g.gid) as min_page,
+                   (select coalesce(max(i.page), 0) from ImageKeyCache i where i.gid = g.gid) as max_page,
+                   (select count(*) from ImageKeyCache i where i.gid = g.gid
+                        and (i.imgkey is null or trim(i.imgkey) = '')) as dirty_keys
+            from gidToKey g
+            group by g.gid
+            having count(*) > 1
+                or max(g.pages) is null or max(g.pages) <= 0
+                or min(g.key) is null or trim(min(g.key)) = ''
+                or (select count(*) from ImageKeyCache i where i.gid = g.gid) <> max(g.pages)
+                or (select count(distinct i.page) from ImageKeyCache i where i.gid = g.gid) <> max(g.pages)
+                or (select coalesce(min(i.page), 0) from ImageKeyCache i where i.gid = g.gid) <> 1
+                or (select coalesce(max(i.page), 0) from ImageKeyCache i where i.gid = g.gid) <> max(g.pages)
+                or (select count(*) from ImageKeyCache i where i.gid = g.gid
+                        and (i.imgkey is null or trim(i.imgkey) = '')) > 0
+            order by g.gid
+            """;
+
+    private static String describe(ResultSet row) throws SQLException {
+        List<String> reasons = new ArrayList<>();
+        int headerRows = row.getInt("header_rows");
+        int pages = row.getInt("pages");
+        String key = row.getString("key");
+        int pageRows = row.getInt("page_rows");
+        int distinctPages = row.getInt("distinct_pages");
+        int minPage = row.getInt("min_page");
+        int maxPage = row.getInt("max_page");
+        int dirtyKeys = row.getInt("dirty_keys");
+        if (headerRows > 1) reasons.add("重复头部记录 " + headerRows + " 条");
+        if (key == null || key.isBlank()) reasons.add("key 为空");
+        if (pages <= 0) reasons.add("pages 非法(" + pages + ")");
+        if (pageRows != pages) reasons.add("页 key 行数 " + pageRows + " 与 pages " + pages + " 不符");
+        if (distinctPages != pages) reasons.add("页码去重后 " + distinctPages + " 个");
+        if (minPage != 1 || maxPage != pages) reasons.add("页码区间 " + minPage + "-" + maxPage);
+        if (dirtyKeys > 0) reasons.add("imgkey 为空 " + dirtyKeys + " 行");
+        return String.join("、", reasons);
+    }
+
+    // ---------- 修复 ----------
+
+    /** 删除不健康 gid 的整组索引与孤儿页 key，返回被移除索引的 gid 个数。 */
+    static int repair(Connection connection, List<String> badGids, List<String> orphanGids)
+            throws SQLException {
+        int touched = 0;
+        try (PreparedStatement pages = connection.prepareStatement("delete from ImageKeyCache where gid = ?");
+             PreparedStatement header = connection.prepareStatement("delete from gidToKey where gid = ?")) {
+            for (String gid : badGids) {
+                pages.setString(1, gid);
+                pages.executeUpdate();
+                header.setString(1, gid);
+                header.executeUpdate();
+                touched++;
+            }
+            for (String gid : orphanGids) {
+                pages.setString(1, gid);
+                if (pages.executeUpdate() > 0)
+                    touched++;
+            }
+        }
+        return touched;
+    }
+
+    // ---------- 基础设施 ----------
+
+    private static boolean tableExists(Connection connection, String table) throws SQLException {
+        try (PreparedStatement statement = connection.prepareStatement(
+                "select count(*) from sqlite_master where type='table' and name=?")) {
+            statement.setString(1, table);
+            try (ResultSet rows = statement.executeQuery()) {
+                return rows.next() && rows.getInt(1) > 0;
+            }
+        }
+    }
+
+    private static int count(Connection connection, String sql) throws SQLException {
+        try (Statement statement = connection.createStatement();
+             ResultSet rows = statement.executeQuery(sql)) {
+            return rows.next() ? rows.getInt(1) : 0;
+        }
+    }
+
+    private static Map<String, String> parseOptions(String[] args) {
+        Map<String, String> options = new LinkedHashMap<>();
+        for (int i = 0; i < args.length; i++) {
+            String arg = args[i];
+            if (!arg.startsWith("--"))
+                continue;
+            String name = arg.substring(2);
+            if (name.equals("apply") || name.equals("help") || name.equals("allow-production")) {
+                options.put(name, "true");
+                continue;
+            }
+            if (i + 1 >= args.length) {
+                System.err.println("缺少参数值: " + arg);
+                System.exit(2);
+            }
+            options.put(name, args[++i]);
+        }
+        return options;
+    }
+
+    private static void printUsage() {
+        System.out.println("""
+                用法: java -cp <sqlite-jdbc.jar> GalleryIndexMaintenance.java --db <cache.db> [--apply] [--allow-production]
+
+                  --db <path>            必填，缓存库文件
+                  --apply                执行修复；不加则只做 dry-run 体检
+                  --allow-production     允许写入 /home/lionwebsite 下的数据库（默认拒绝）
+
+                退出码: 0 健康或修复成功 / 1 存在待修复项(dry-run) / 2 参数错误 /
+                        3 拒绝写生产路径 / 4 修复后仍不健康 / 5 执行异常
+                """);
+    }
+
+    private GalleryIndexMaintenance() { }
+
+    /** 一次体检结果。 */
+    static final class Report {
+        boolean hasHeaderTable;
+        boolean hasPageTable;
+        int headerRows;
+        int pageRows;
+        int duplicateHeaderGids;
+        int duplicatePageGroups;
+        final List<String> badGids = new ArrayList<>();
+        final List<String> orphanGids = new ArrayList<>();
+        final Map<String, String> badReasons = new LinkedHashMap<>();
+
+        boolean isHealthy() {
+            return hasHeaderTable && hasPageTable && badGids.isEmpty() && orphanGids.isEmpty();
+        }
+
+        String render(String title) {
+            StringBuilder out = new StringBuilder();
+            out.append("=== 图片索引").append(title).append("（").append(Instant.now()).append("）===\n");
+            if (!hasHeaderTable || !hasPageTable) {
+                out.append("缺少缓存表: gidToKey=").append(hasHeaderTable)
+                   .append(" ImageKeyCache=").append(hasPageTable).append('\n');
+                return out.toString();
+            }
+            out.append("gidToKey 行数: ").append(headerRows).append('\n');
+            out.append("ImageKeyCache 行数: ").append(pageRows).append('\n');
+            out.append("重复 gid 组: ").append(duplicateHeaderGids).append('\n');
+            out.append("重复 (gid,page) 组: ").append(duplicatePageGroups).append('\n');
+            out.append("不完整或冲突 gid: ").append(badGids.size()).append('\n');
+            int limit = 20;
+            for (int i = 0; i < badGids.size() && i < limit; i++) {
+                String gid = badGids.get(i);
+                out.append("  - gid=").append(gid).append(' ')
+                   .append(badReasons.getOrDefault(gid, "")).append('\n');
+            }
+            if (badGids.size() > limit)
+                out.append("  ... 其余 ").append(badGids.size() - limit).append(" 个略\n");
+            out.append("孤儿页 key 的 gid: ").append(orphanGids.size()).append('\n');
+            out.append(isHealthy() ? "结论: 健康\n" : "结论: 需要修复\n");
+            return out.toString();
+        }
+    }
+}

src/main/java/com/lion/lionwebsite/Message/AbstractMessage.java

@@ -19,6 +19,22 @@ public class AbstractMessage {
 
     public static final byte AVAILABLE_CHECK_MESSAGE = 8;
 
+    public static final byte SUBSCRIPTION_SNAPSHOT_MESSAGE = 9;
+
+    // ---- 协议 v2（可靠任务）。旧类型 0..9 的字段保持不变，不能新增字段。 ----
+
+    /** 能力协商：{@code {protocolVersion: 2, features: ["reliable-task-v2"]}}。 */
+    public static final byte PROTOCOL_HELLO_MESSAGE = 10;
+
+    /** 带稳定 operationId 的任务命令（DOWNLOAD/DELETE）。 */
+    public static final byte TASK_COMMAND_MESSAGE = 11;
+
+    /** 带 reportId + revision 的状态上报，替代旧的无确认上报。 */
+    public static final byte TASK_REPORT_MESSAGE = 12;
+
+    /** 主站提交事务成功后的上报回执，节点据此清理快照。 */
+    public static final byte TASK_REPORT_ACK_MESSAGE = 13;
+
     public byte messageType;
 
     public int messageId;

src/main/java/com/lion/lionwebsite/Message/MessageCodec.java

@@ -1,7 +1,7 @@
 package com.lion.lionwebsite.Message;
 
 
-import com.fasterxml.jackson.databind.ObjectMapper;
+import tools.jackson.databind.ObjectMapper;
 import io.netty.buffer.ByteBuf;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.handler.codec.ByteToMessageCodec;
@@ -44,6 +44,11 @@ public class MessageCodec extends ByteToMessageCodec<AbstractMessage> {
             case AbstractMessage.IDENTITY_MESSAGE -> objectMapper.readValue(metadata, IdentityMessage.class);
             case AbstractMessage.MAINTAIN_MESSAGE -> objectMapper.readValue(metadata, MaintainMessage.class);
             case AbstractMessage.AVAILABLE_CHECK_MESSAGE -> objectMapper.readValue(metadata, AvailableCheckMessage.class);
+            case AbstractMessage.SUBSCRIPTION_SNAPSHOT_MESSAGE -> objectMapper.readValue(metadata, SubscriptionSnapshotMessage.class);
+            case AbstractMessage.PROTOCOL_HELLO_MESSAGE -> objectMapper.readValue(metadata, ProtocolHelloMessage.class);
+            case AbstractMessage.TASK_COMMAND_MESSAGE -> objectMapper.readValue(metadata, TaskCommandMessage.class);
+            case AbstractMessage.TASK_REPORT_MESSAGE -> objectMapper.readValue(metadata, TaskReportMessage.class);
+            case AbstractMessage.TASK_REPORT_ACK_MESSAGE -> objectMapper.readValue(metadata, TaskReportAckMessage.class);
             default -> null;
         };
 

src/main/java/com/lion/lionwebsite/Message/ProtocolHelloMessage.java

@@ -0,0 +1,30 @@
+package com.lion.lionwebsite.Message;
+
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/** 协议 v2 能力协商（类型 10）。双方都以对方声明了 version>=2 为前提才启用新消息。 */
+@Data
+@NoArgsConstructor
+public class ProtocolHelloMessage extends AbstractMessage {
+    {
+        messageType = PROTOCOL_HELLO_MESSAGE;
+    }
+
+    public static final int PROTOCOL_V2 = 2;
+
+    public static final String FEATURE_RELIABLE_TASK_V2 = "reliable-task-v2";
+
+    private int protocolVersion = PROTOCOL_V2;
+
+    private List<String> features = new ArrayList<>(List.of(FEATURE_RELIABLE_TASK_V2));
+
+    /** 对端是否声明了 v2 可靠任务能力。 */
+    public boolean supportsReliableTasks() {
+        return protocolVersion >= PROTOCOL_V2
+                && features != null && features.contains(FEATURE_RELIABLE_TASK_V2);
+    }
+}

src/main/java/com/lion/lionwebsite/Message/SubscriptionAccountSnapshot.java

@@ -0,0 +1,16 @@
+package com.lion.lionwebsite.Message;
+
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@NoArgsConstructor
+public class SubscriptionAccountSnapshot {
+    private Integer accountId;
+    private boolean enabled;
+    private boolean filterHighMultiplier;
+    private String v2ContentBase64;
+    private String v2Sha256;
+    private String clashContentBase64;
+    private String clashSha256;
+}

src/main/java/com/lion/lionwebsite/Message/SubscriptionBindingSnapshot.java

@@ -0,0 +1,11 @@
+package com.lion.lionwebsite.Message;
+
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@NoArgsConstructor
+public class SubscriptionBindingSnapshot {
+    private String publicKeySha256;
+    private Integer accountId;
+}

src/main/java/com/lion/lionwebsite/Message/SubscriptionSnapshotMessage.java

@@ -0,0 +1,21 @@
+package com.lion.lionwebsite.Message;
+
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+
+@Data
+@NoArgsConstructor
+@ToString(exclude = {"payloadBase64", "signature"})
+public class SubscriptionSnapshotMessage extends AbstractMessage {
+    {
+        messageType = SUBSCRIPTION_SNAPSHOT_MESSAGE;
+    }
+
+    private int schemaVersion;
+    private String revision;
+    private long generatedAt;
+    private String payloadBase64;
+    private String payloadSha256;
+    private String signature;
+}

src/main/java/com/lion/lionwebsite/Message/SubscriptionSnapshotPayload.java

@@ -0,0 +1,15 @@
+package com.lion.lionwebsite.Message;
+
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@Data
+@NoArgsConstructor
+public class SubscriptionSnapshotPayload {
+    private int schemaVersion;
+    private List<SubscriptionAccountSnapshot> accounts = new ArrayList<>();
+    private List<SubscriptionBindingSnapshot> bindings = new ArrayList<>();
+}

src/main/java/com/lion/lionwebsite/Message/TaskCommandMessage.java

@@ -0,0 +1,29 @@
+package com.lion.lionwebsite.Message;
+
+import lombok.Data;
+
+/**
+ * 任务命令（类型 11）。
+ *
+ * <p>只有确认对端支持 v2 之后才发送。同一逻辑操作在重试/重连后必须复用同一个
+ * {@link #operationId}，节点据此返回原结果而不重复执行副作用。
+ */
+@Data
+public class TaskCommandMessage extends AbstractMessage {
+    {
+        messageType = TASK_COMMAND_MESSAGE;
+    }
+
+    public static final String ACTION_DOWNLOAD = "DOWNLOAD";
+
+    public static final String ACTION_DELETE = "DELETE";
+
+    /** 稳定操作 ID：DOWNLOAD 与 DELETE 各自独立。 */
+    private String operationId;
+
+    private String action;
+
+    private int gid;
+
+    private String name;
+}

src/main/java/com/lion/lionwebsite/Message/TaskReportAckMessage.java

@@ -0,0 +1,29 @@
+package com.lion.lionwebsite.Message;
+
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * 上报回执（类型 13）。
+ *
+ * <p>只在任务行与回执已经提交之后才发送；重复上报（同一 reportId）也会得到回执，
+ * 让节点停止重放。{@link #result} 0 表示已落库。
+ */
+@Data
+@NoArgsConstructor
+public class TaskReportAckMessage extends AbstractMessage {
+    {
+        messageType = TASK_REPORT_ACK_MESSAGE;
+    }
+
+    public static final byte RESULT_SUCCESS = 0;
+
+    private String reportId;
+
+    private byte result;
+
+    public TaskReportAckMessage(String reportId, byte result) {
+        this.reportId = reportId;
+        this.result = result;
+    }
+}

src/main/java/com/lion/lionwebsite/Message/TaskReportMessage.java

@@ -0,0 +1,32 @@
+package com.lion.lionwebsite.Message;
+
+import com.lion.lionwebsite.Domain.GalleryTask;
+import lombok.Data;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+/**
+ * 节点状态上报（类型 12）。
+ *
+ * <p>相比旧的无确认上报，这里带上单调递增的 {@link #revision} 与唯一 {@link #reportId}：
+ * 主站据此丢弃乱序/重放的旧快照，并在事务提交后回 {@link TaskReportAckMessage}，
+ * 节点只有在收到匹配回执后才清理自己的快照。
+ */
+@Data
+public class TaskReportMessage extends AbstractMessage {
+    {
+        messageType = TASK_REPORT_MESSAGE;
+    }
+
+    /** 本次上报的唯一 ID，重复投递同一份快照时保持不变。 */
+    private String reportId;
+
+    /** 节点侧单调递增版本号；主站只接受比已记录更大的 revision。 */
+    private long revision;
+
+    private GalleryTask[] galleryTasks;
+
+    /** gid → 产生该状态的下载 operationId，用于丢弃属于旧操作的迟到上报。 */
+    private Map<Integer, String> operationIds = new LinkedHashMap<>();
+}

src/main/java/com/lion/lionwebsite/Service/GalleryIndexService.java

@@ -0,0 +1,262 @@
+package com.lion.lionwebsite.Service;
+
+import com.lion.lionwebsite.Dao.cache.ImageCacheMapper;
+import com.lion.lionwebsite.Domain.GidToKey;
+import com.lion.lionwebsite.Domain.ImageKeyCache;
+import com.lion.lionwebsite.Exception.GalleryIndexException;
+import com.lion.lionwebsite.Util.GalleryUtil;
+import com.lion.lionwebsite.Util.SingleFlight;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.transaction.support.TransactionOperations;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+/**
+ * 图片索引（gid 到每页 imgkey）的唯一读写入口。
+ *
+ * <p>这个类替换掉原先「读缓存 / 写缓存 / 回滚」分散在业务服务里、并且逐页 INSERT
+ * 的写法。三件事在这里被固定下来：
+ *
+ * <ol>
+ *   <li><b>同 gid 合并</b>：并发请求同一本画廊时只有一个线程真的去抓上游，
+ *       其余线程等待同一个结果（含失败），因此不会出现两个构建者互相删除对方写入的索引。</li>
+ *   <li><b>抓取在事务外</b>：上游 HTTP 可能耗时十几秒，绝不能占着 SQLite 写事务，
+ *       否则整个缓存库的写入都会排队。</li>
+ *   <li><b>整组短事务发布</b>：一个事务里先删该 gid 的旧索引，再批量写入新索引。
+ *       失败整体回滚，磁盘上仍保留旧的完整索引；只有写入成功这一个状态是对外可见的。</li>
+ * </ol>
+ *
+ * <p>依赖全部由构造函数注入：mapper 负责落库，operations 负责事务边界，
+ * upstream 负责把 mpv 页解析成页 key 列表。测试可以直接给假的实现，
+ * 不需要起 Spring 上下文，也不需要网络。
+ */
+public class GalleryIndexService {
+
+    private static final Logger log = LoggerFactory.getLogger(GalleryIndexService.class);
+
+    /** 单条 INSERT 携带的最大行数，避免 SQL 过长。 */
+    static final int BATCH_SIZE = 200;
+
+    private final ImageCacheMapper mapper;
+    private final TransactionOperations operations;
+    private final TransactionOperations readOperations;
+    private final GalleryKeyUpstream upstream;
+    private final SingleFlight<String, GidToKey> builds = new SingleFlight<>();
+
+    public GalleryIndexService(ImageCacheMapper mapper, TransactionOperations operations,
+                              GalleryKeyUpstream upstream) {
+        this(mapper, operations, operations, upstream);
+    }
+
+    /**
+     * @param operations     发布索引的写事务（删除加批量写入必须整体生效）
+     * @param readOperations 读取索引的一致性快照事务；传 null 表示不额外开启读事务
+     */
+    public GalleryIndexService(ImageCacheMapper mapper, TransactionOperations operations,
+                               TransactionOperations readOperations, GalleryKeyUpstream upstream) {
+        if (mapper == null || operations == null || upstream == null)
+            throw new IllegalArgumentException("mapper/operations/upstream 不能为空");
+        this.mapper = mapper;
+        this.operations = operations;
+        this.readOperations = readOperations;
+        this.upstream = upstream;
+    }
+
+    /**
+     * 保证该画廊的索引可用，返回 gid 到 key 的映射。
+     *
+     * @param url 画廊链接，形如 https://exhentai.org/g/1596929/f08534d87d/
+     * @throws GalleryIndexException 链接错误 / 画廊不可用 / 暂时失败，见 GalleryIndexException.Reason
+     */
+    public GidToKey ensureIndex(String url) throws GalleryIndexException {
+        return ensureIndex(url, this::buildAndPublish);
+    }
+
+    /**
+     * 同 ensureIndex，但允许调用方提供构建动作。
+     *
+     * <p>离线重建需要「先检查再决定是否重建」的不同策略，因此把构建步骤作为参数暴露出来；
+     * 生产调用使用默认实现即可。
+     */
+    GidToKey ensureIndex(String url, IndexBuilder builder) throws GalleryIndexException {
+        GalleryLink link = GalleryLink.parse(url);
+        GidToKey cached = lookup(link);
+        if (cached != null)
+            return cached;
+        try {
+            return builds.run(link.gid(), () -> {
+                // 进入临界区后必须再看一眼：等待期间别的线程可能已经把索引建好了。
+                GidToKey existing = lookup(link);
+                return existing != null ? existing : builder.build(url);
+            });
+        } catch (GalleryIndexException e) {
+            throw e;
+        } catch (Exception e) {
+            throw new GalleryIndexException(GalleryIndexException.Reason.TRANSIENT,
+                    "构建图片索引失败 gid=" + link.gid(), e);
+        }
+    }
+
+    /**
+     * 已缓存且完整则返回索引，否则返回 null。
+     *
+     * <p>完整性由页码集合判定，而不是行数：历史重复行与半截写入都会让行数与页数不符。
+     */
+    GidToKey lookup(GalleryLink link) {
+        if (readOperations != null)
+            return readOperations.execute(status -> lookupInTransaction(link));
+        return lookupInTransaction(link);
+    }
+
+    /**
+     * 在同一个读事务里读头部与页码，得到一个一致的快照。
+     *
+     * <p>两个独立的 SELECT 之间可能夹着另一个线程的整组替换，于是头部是旧的、页码是新的
+     * （或相反），完整性判断会得出错误结论。SQLite 的读事务能看到固定快照，避免这种交错。
+     */
+    private GidToKey lookupInTransaction(GalleryLink link) {
+        GidToKey header = mapper.selectKeyByGid(link.gid());
+        if (header == null)
+            return null;
+        if (header.getPages() <= 0 || header.getKey() == null || header.getKey().isBlank())
+            return null;
+        if (!isComplete(header))
+            return null;
+        return header;
+    }
+
+    private boolean isComplete(GidToKey header) {
+        List<Integer> pages = mapper.selectPageNumbersByGid(header.getGid());
+        if (pages == null || pages.size() != header.getPages())
+            return false;
+        if (mapper.countInvalidImageKeysByGid(header.getGid()) != 0)
+            return false;
+        // 页码必须是严格递增的 1..pages，重复或跳号都视为不完整。
+        for (int i = 0; i < pages.size(); i++) {
+            Integer page = pages.get(i);
+            if (page == null || page != i + 1)
+                return false;
+        }
+        return true;
+    }
+
+    /** 抓上游（事务外）后短事务整组替换。 */
+    private GidToKey buildAndPublish(String url) throws GalleryIndexException {
+        GalleryLink link = GalleryLink.parse(url);
+        List<ImageKeyCache> pageKeys;
+        try {
+            // 抓取必须发生在事务之外：上游可能耗时十几秒，占着 SQLite 写事务会拖垮整个缓存库。
+            pageKeys = upstream.fetchPageKeys(url);
+        } catch (Exception e) {
+            throw new GalleryIndexException(GalleryIndexException.Reason.TRANSIENT,
+                    "抓取图片索引失败 gid=" + link.gid(), e);
+        }
+        if (pageKeys == null || pageKeys.isEmpty())
+            throw new GalleryIndexException(GalleryIndexException.Reason.UNAVAILABLE,
+                    "该图片已下架或已被删除 gid=" + link.gid());
+
+        // 落库前先校验上游数据自洽：整组替换一旦开始就没有回头路，
+        // 与其把畸形页码写进唯一约束再回滚，不如在此之前就判为失败。
+        validatePageKeys(link, pageKeys);
+
+        GidToKey header = new GidToKey();
+        header.setGid(link.gid());
+        header.setKey(link.key());
+        header.setPages(pageKeys.size());
+
+        publish(header, pageKeys);
+        return header;
+    }
+
+    /**
+     * 校验上游返回的页 key 是否自洽。
+     *
+     * <p>四条要求缺一不可，否则索引会以「看起来完整」的样子写进库：
+     * gid 属于请求的那本画廊、页码恰好是 1..N、页码不重复、imgkey 非空。
+     * 任一不满足都抛出 {@link GalleryIndexException.Reason#MALFORMED}，此时尚未开启写事务，
+     * 库中旧索引保持原样。
+     */
+    void validatePageKeys(GalleryLink link, List<ImageKeyCache> pageKeys) throws GalleryIndexException {
+        int expected = pageKeys.size();
+        Set<Integer> seen = new HashSet<>(expected * 2);
+        for (ImageKeyCache row : pageKeys) {
+            if (row == null || row.getGid() == null || !row.getGid().equals(link.gid()))
+                throw malformed(link, "上游页 key 的 gid 与请求不一致");
+            if (row.getImgkey() == null || row.getImgkey().isBlank())
+                throw malformed(link, "上游页 key 的 imgkey 为空");
+            int page = row.getPage();
+            if (page < 1 || page > expected)
+                throw malformed(link, "上游页码越界: " + page + "（共 " + expected + " 页）");
+            if (!seen.add(page))
+                throw malformed(link, "上游页码重复: " + page);
+        }
+        if (seen.size() != expected)
+            throw malformed(link, "上游页码不连续，去重后 " + seen.size() + " 个，期望 " + expected + " 个");
+    }
+
+    private GalleryIndexException malformed(GalleryLink link, String detail) {
+        log.warn("上游图片索引非法 gid={} detail={}", link.gid(), detail);
+        return new GalleryIndexException(GalleryIndexException.Reason.MALFORMED,
+                detail + " gid=" + link.gid());
+    }
+
+    /**
+     * 在单个事务里整组替换索引。
+     *
+     * <p>失败时事务整体回滚：要么看到旧的完整索引，要么看到新的完整索引，
+     * 不存在「头部已更新、页 key 缺失」的中间态。
+     */
+    void publish(GidToKey header, List<ImageKeyCache> pageKeys) {
+        operations.executeWithoutResult(status -> {
+            mapper.deleteImageKeyCacheByGid(header.getGid());
+            mapper.deleteGidToKey(header.getGid());
+            mapper.insertGidToKey(header);
+            writeBatches(pageKeys);
+        });
+        log.info("图片索引已整体替换 gid={} pages={}", header.getGid(), header.getPages());
+    }
+
+    private void writeBatches(List<ImageKeyCache> pageKeys) {
+        for (int start = 0; start < pageKeys.size(); start += BATCH_SIZE) {
+            int end = Math.min(start + BATCH_SIZE, pageKeys.size());
+            mapper.insertImageKeyCacheBatch(new ArrayList<>(pageKeys.subList(start, end)));
+        }
+    }
+
+    /** 便于日志与错误信息使用的解析结果。 */
+    record GalleryLink(String gid, String key) {
+
+        static GalleryLink parse(String url) throws GalleryIndexException {
+            String[] segments = url == null ? null : url.split("/");
+            Integer gid = GalleryUtil.parseGid(url);
+            if (gid == null || segments == null || segments.length <= 5 || segments[5].isBlank())
+                throw new GalleryIndexException(GalleryIndexException.Reason.INVALID_LINK,
+                        "链接错误");
+            return new GalleryLink(String.valueOf(gid), segments[5].strip());
+        }
+    }
+
+    /**
+     * 上游取页 key 的端口。
+     *
+     * <p>生产实现只是把 URL 转交给 GalleryUtil.parseImageKeys；
+     * 单独抽出来是为了让本服务在测试里完全脱离网络与静态工具类。
+     */
+    @FunctionalInterface
+    public interface GalleryKeyUpstream {
+        List<ImageKeyCache> fetchPageKeys(String url) throws Exception;
+    }
+
+    /**
+     * 构建索引的动作。允许抛出业务异常，因此不用 java.util.function.Function
+     * （后者不能抛受检异常，会让调用方被迫包装成运行时异常）。
+     */
+    @FunctionalInterface
+    interface IndexBuilder {
+        GidToKey build(String url) throws GalleryIndexException;
+    }
+}

src/main/java/com/lion/lionwebsite/Service/GalleryManageService.java

@@ -7,9 +7,11 @@ import com.lion.lionwebsite.Exception.ResolutionNotMatchException;
 import com.lion.lionwebsite.Error.ErrorCode;
 import com.lion.lionwebsite.Util.CustomUtil;
 import com.lion.lionwebsite.Util.FileDownload;
+import com.lion.lionwebsite.Util.ImageFileCache;
+import java.nio.file.Path;
 import com.lion.lionwebsite.Util.GalleryUtil;
 import com.lion.lionwebsite.Util.Response;
-import com.fasterxml.jackson.databind.ObjectMapper;
+import tools.jackson.databind.node.ObjectNode;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import lombok.Data;
@@ -38,14 +40,22 @@ public class GalleryManageService {
 
     final UserMapper userMapper;
 
-    final ShareFileMapper shareFileMapper;
-
     final ImageCacheMapper imageCacheMapper;
 
     final RemoteService remoteService;
 
     final PushService pushService;
 
+    /**
+     * 任务生命周期（协议 v2）。创建/删除都先走它做持久化意图，再产生外部副作用。
+     * 用字段注入是为了兼容现有构造式 mock 测试与旧调用点。
+     */
+    @org.springframework.beans.factory.annotation.Autowired(required = false)
+    GalleryTaskLifecycleService lifecycleService;
+
+    @org.springframework.beans.factory.annotation.Autowired
+    GalleryIndexService galleryIndexService;
+
     /**
      * 创建任务
      * @param link             任务链接
@@ -58,25 +68,47 @@ public class GalleryManageService {
         User user = userMapper.selectUserByAuthCode(AuthCode);
 //        return Response._failure("调试中，请勿提交任务");
 
+        if (user == null) {
+            response.failure("授权码无效");
+            return response.toJSONString();
+        }
+
+        // 段数不足会先抛 ArrayIndexOutOfBoundsException，非数字段抛 NumberFormatException；
+        // 只捕后者会让畸形链接穿透为 500（本项目无 @ControllerAdvice）。
+        Integer parsedGid = parseGidFromLink(link);
+        if (parsedGid == null) {
+            response.failure("链接错误");
+            pushService.taskCreateReport(user.getUsername(), "未知任务", response);
+            return response.toJSONString();
+        }
+        int gid = parsedGid;
+        String taskName = "任务 [" + gid + "]";
+
         if (remoteService.isDead()) {
             response.failure("节点挂了，找狮子处理");
-            pushService.taskCreateReport(user.getUsername(), link, response);
+            pushService.taskCreateReport(user.getUsername(), taskName, response);
             return response.toJSONString();
         }
-        int gid;
+
-        try {
+        // 协议 v2 生命周期：gid 唯一意图先落库（占位行「提交中」），提交前持久化 SUBMITTING，
-            gid = Integer.parseInt(link.split("/")[4]);
+        // 上游结果不确定时报 UNKNOWN 而不是自动重发；差额额度与任务行在同一短事务里写入。
-        } catch (NumberFormatException e) {
+        if (lifecycleService != null) {
-            response.failure("链接错误");
+            response = lifecycleService.createTask(gid, taskName, link, targetResolution, user.getId());
-            pushService.taskCreateReport(user.getUsername(), link, response);
+            Gallery current = galleryMapper.selectGalleryByGid(gid);
+            taskName = current == null || current.getName() == null ? taskName : current.getName();
+            // 业务结果由生命周期服务给出，data 用结构化对象下发（前端解码器兼容旧字符串）。
+            if (response.isSuccess() && current != null)
+                response.success(objectMapper.valueToTree(current));
+            pushService.taskCreateReport(user.getUsername(), taskName, response);
             return response.toJSONString();
         }
+
         Gallery gallery;
 
         //判断数据库中是否有这个任务，有则返回状态
         if ((gallery = galleryMapper.selectGalleryByGid(gid)) != null) {
             response.failure("任务队列已有此任务，任务状态： " + gallery.getStatus() + " 请点击查找任务");
-            pushService.taskCreateReport(user.getUsername(), link, response);
+            pushService.taskCreateReport(user.getUsername(), gallery.getName(), response);
             return response.toJSONString();
         }
 
@@ -86,47 +118,59 @@ public class GalleryManageService {
             if (gallery == null || !gallery.getStatus().equals("已提交")) {
                 log.error("创建任务失败: {}，", link);
                 response.failure("提交任务失败，未知原因，请检查链接是否正常");
-                pushService.taskCreateReport(user.getUsername(), link, response);
+                pushService.taskCreateReport(user.getUsername(), taskName, response);
                 return response.toJSONString();
             } else {
+                taskName = gallery.getName();
                 log.info("创建任务: {} 目标分辨率：{}", link, targetResolution);
+                // Persist before dispatch: the node sends its current status before its ACK.
+                gallery.setDownloader(user.getId());
+                gallery.set_download(true);
+                galleryMapper.insertGallery(gallery);
+                configurationMapper.incrementConfiguration(CustomConfiguration.WEEK_USED_AMOUNT, gallery.getFileSize());
                 if (remoteService.addGalleryToQueue(gallery) != 0) {
                     log.error("传送任务{}失败, 未知原因", gallery.getName());
-                    response.failure("任务传送失败，未知原因，尝试点击重连按钮看看");
+                    response.failure("任务已保存，但节点未确认接收；请刷新任务列表后重试");
-                    pushService.taskCreateReport(user.getUsername(), link, response);
+                    pushService.taskCreateReport(user.getUsername(), taskName, response);
                     return response.toJSONString();
                 }
             }
         } catch (ResolutionNotMatchException e) {
             response.failure("提交失败，分辨率不存在");
-            pushService.taskCreateReport(user.getUsername(), link, response);
+            pushService.taskCreateReport(user.getUsername(), taskName, response);
             return response.toJSONString();
         } catch (IOException e) {
             log.error(e.getMessage());
             response.failure("IO错误，可能是网络波动");
-            pushService.taskCreateReport(user.getUsername(), link, response);
+            pushService.taskCreateReport(user.getUsername(), taskName, response);
             return response.toJSONString();
         }
 
-        //处理下载结果，将任务插入数据库并且更新每周用量
+        // Do not overwrite an immediate node status with the original submitted state.
-        if (gallery.getStatus().equals("已提交")) {
+        Gallery current = galleryMapper.selectGalleryByGid(gallery.getGid());
-            response.success(gallery.toString());
+        response.success(objectMapper.valueToTree(current == null ? gallery : current));
-            gallery.setDownloader(user.getId());
+        pushService.taskCreateReport(user.getUsername(), taskName, response);
-            gallery.set_download(true);
-            galleryMapper.insertGallery(gallery);
-
-            long usedAmount = Long.parseLong(configurationMapper.selectConfiguration(CustomConfiguration.WEEK_USED_AMOUNT).getValue());
-            usedAmount += gallery.getFileSize();
-            configurationMapper.updateConfiguration(CustomConfiguration.WEEK_USED_AMOUNT, String.valueOf(usedAmount));
-        } else {
-            response.failure("提交失败，未知原因");
-            galleryMapper.deleteGalleryByGid(gallery.getGid());
-        }
-        pushService.taskCreateReport(user.getUsername(), link, response);
 
         return response.toJSONString();
     }
 
+    /**
+     * 从任务链接中安全提取 gid。任何畸形输入（null、段数不足、非数字）都返回 null，
+     * 由调用方转成业务失败，避免异常穿透为 500。
+     */
+    static Integer parseGidFromLink(String link) {
+        if (link == null)
+            return null;
+        String[] segments = link.split("/");
+        if (segments.length <= 4)
+            return null;
+        try {
+            return Integer.parseInt(segments[4]);
+        } catch (NumberFormatException e) {
+            return null;
+        }
+    }
+
     /**
      * 尝试重新连接
      * @return 重连结果
@@ -164,7 +208,7 @@ public class GalleryManageService {
             try {
                 gallery = GalleryUtil.parse(link, false, null);
                 if (gallery != null)
-                    response.success(new ObjectMapper().valueToTree(gallery).toString());
+                    response.success(objectMapper.valueToTree(gallery));
                 else
                     response.failure("查询失败");
             } catch (Exception e) {
@@ -173,7 +217,7 @@ public class GalleryManageService {
             }
 
         else
-            response.success(new ObjectMapper().valueToTree(gallery).toString());
+            response.success(objectMapper.valueToTree(gallery));
 
         return response.toJSONString();
     }
@@ -192,7 +236,7 @@ public class GalleryManageService {
             response.failure("未找到该图片，请使用链接");
 
         else
-            response.success(gallery.toString());
+            response.success(objectMapper.valueToTree(gallery));
 
         return response.toJSONString();
     }
@@ -212,26 +256,62 @@ public class GalleryManageService {
         }
 
         ArrayList<Integer> galleryIds = collectMapper.selectGidByCollector(userId);
-        Iterator<Integer> idIterator;
+        // 原先对每个画廊线性扫描收藏列表（O(n*m)）并就地删除迭代器元素；
+        // 改成集合查找后同样是「命中即标记」，复杂度降到 O(n+m)。
+        if (!galleryIds.isEmpty()) {
+            Set<Integer> collected = new HashSet<>(galleryIds);
+            for (Gallery gallery : galleries)
+                if (collected.contains(gallery.getGid()))
+                    gallery.setCollect(true);
+        }
 
-        if (!galleryIds.isEmpty())                              //如果该用户收藏了图片
+        // 下载人昵称只对管理员下发；一次建表避免逐条查询。
-            galleryLoop:for (Gallery gallery : galleries) {   //遍历图片
+        if (userId == UserService.ADMIN_USER_ID)
-                idIterator = galleryIds.iterator();
+            fillDownloaderNames(galleries);
-                while (idIterator.hasNext()) {                  //遍历收藏的gid
-                    Integer id = idIterator.next();
-                    if (id.equals(gallery.getGid())) {           //如果找到对应的gid,修改对应图片的属性，删除当前gid，判断是否需要跳出或者结束循环
-                        gallery.setCollect(true);
-                        idIterator.remove();
 
-                        if (galleryIds.isEmpty())
+        response.success(objectMapper.valueToTree(galleries));
-                            break galleryLoop;
+        return response.toJSONString();
-                        else
+    }
-                            continue galleryLoop;
-                    }
-                }
-            }
 
-        response.success(new ObjectMapper().valueToTree(galleries).toString());
+    /** 给任务列表补上下载人昵称，找不到用户时保留空值而不是报错。 */
+    private void fillDownloaderNames(Gallery[] galleries) {
+        User[] users = userMapper.selectAllUser();
+        Map<Integer, String> names = new HashMap<>();
+        if (users != null)
+            for (User user : users)
+                names.put(user.getId(), user.getUsername());
+
+        for (Gallery gallery : galleries)
+            gallery.setDownloaderName(names.get(gallery.getDownloader()));
+    }
+
+    /**
+     * 查询某个任务的实际下载人昵称。
+     * 只有管理员可调用，普通用户一律拒绝，避免暴露他人身份。
+     *
+     * @param gid      任务 gid
+     * @param AuthCode 调用方授权码
+     */
+    public String selectDownloaderByGid(int gid, String AuthCode) {
+        Response response = Response.generateResponse();
+        User requester = userMapper.selectUserByAuthCode(AuthCode);
+        if (requester == null || requester.getId() != UserService.ADMIN_USER_ID) {
+            response.failure("无权查看下载人");
+            return response.toJSONString();
+        }
+
+        Gallery gallery = galleryMapper.selectGalleryByGid(gid);
+        if (gallery == null) {
+            response.failure("任务不存在");
+            return response.toJSONString();
+        }
+
+        User downloader = userMapper.selectUserById(gallery.getDownloader());
+        ObjectNode node = objectMapper.createObjectNode();
+        node.put("gid", gid);
+        node.put("downloader", gallery.getDownloader());
+        node.put("downloaderName", downloader == null ? "" : downloader.getUsername());
+        response.success(node);
         return response.toJSONString();
     }
 
@@ -246,7 +326,7 @@ public class GalleryManageService {
         Gallery gallery = galleryMapper.selectGalleryByName("%" + name + "%");
 
         if (gallery != null)
-            response.success(new ObjectMapper().valueToTree(gallery).toString());
+            response.success(objectMapper.valueToTree(gallery));
         else
             response.failure("没有找到该名字的图片");
 
@@ -264,7 +344,7 @@ public class GalleryManageService {
 
         Gallery[] galleries = galleryMapper.selectGalleryByDownloader(userMapper.selectUserByAuthCode(AuthCode).getId());
         if (galleries.length > 0)
-            response.success(new ObjectMapper().valueToTree(galleries).toString());
+            response.success(objectMapper.valueToTree(galleries));
         else
             response.failure("您未下载图片");
 
@@ -285,21 +365,73 @@ public class GalleryManageService {
             response.failure("删除失败，该图片不存在");
             return response.toJSONString();
         }
+        if (user == null) {
+            response.failure("删除失败，授权码无效");
+            return response.toJSONString();
+        }
 
         ArrayList<Integer> collector = collectMapper.selectCollectorByGid(gallery.getGid());
-        if (!(collector.isEmpty() || collector.size() == 1 && collector.getFirst().equals(user.getId())         //判断收藏
+        // 拒绝条件与提示文案一致：被别人收藏，或者请求者不是下载人。
-                && gallery.getDownloader() == user.getId()))                                                   //判断下载
+        // 注意不能写成 collector.isEmpty() || ...：那样在「无任何收藏」时会短路放行，
+        // 从而完全跳过下载者校验，导致任何有效授权码都能删除他人任务。
+        boolean collectedByOthers = collector.stream().anyMatch(id -> id != user.getId());
+        boolean isDownloader = gallery.getDownloader() == user.getId();
+        if (collectedByOthers || !isDownloader) {
             response.failure("删除失败，该图片已被别人收藏或你不是下载人");
-        else {
+            log.info("拒绝删除 gid={}：collectedByOthers={} isDownloader={}", gid, collectedByOthers, isDownloader);
-            log.info("删除图片{}", gallery.getName());
+            return response.toJSONString();
-            galleryMapper.deleteGalleryByGid(gallery.getGid());                                 //删除图片记录
         }
+
+        // 通过授权后才产生外部副作用。协议 v2 的删除顺序：
+        // 先落「待删除」意图 → 节点确认（或文件已不存在）→ 才在同一事务删任务行并留墓碑。
+        // 失败时任务行与意图都保留，可沿原记录重试并复用同一个删除 operationId。
+        log.info("删除图片{}", gallery.getName());
+        if (lifecycleService != null) {
+            // 被拒绝（例如任务仍在提交中）时必须回业务失败：
+            // 绝不能退避到裸删除，否则会与并发的创建 POST 同时执行并写回已删/重建的 gid。
+            GalleryTaskLifecycleService.DeleteIntent intent = lifecycleService.beginDelete(gallery.getGid());
+            if (!intent.accepted()) {
+                response.failure(intent.message());
+                log.info("拒绝删除 gid={}：{}", gid, intent.message());
+                return response.toJSONString();
+            }
+            byte result = remoteService.sendDeleteCommand(intent.deleteOperationId(),
+                    gallery.getGid(), gallery.getName());
+            switch (result) {
+                case 0 -> {
+                    lifecycleService.completeDelete(gallery.getGid(), intent.deleteOperationId());
+                    response.success();
+                }
+                // 文件已不存在等于目标达成：同样完成本地清理，避免留下永远删不掉的任务行。
+                case ErrorCode.FILE_NOT_FOUND -> {
+                    lifecycleService.completeDelete(gallery.getGid(), intent.deleteOperationId());
+                    response.success();
+                }
+                case ErrorCode.IO_ERROR -> {
+                    lifecycleService.failDelete(gallery.getGid());
+                    response.failure("图片:" + gallery.getName() + "删除失败，IO错误");
+                }
+                // 节点无响应/超时：保留记录与待删除意图，可重试。
+                default -> {
+                    lifecycleService.failDelete(gallery.getGid());
+                    response.failure("图片:" + gallery.getName() + "删除失败，节点无响应");
+                }
+            }
+            if (!response.isSuccess())
+                log.info(response.getData());
+            return response.toJSONString();
+        }
+
+        galleryMapper.deleteGalleryByGid(gallery.getGid());
         switch (remoteService.deleteGallery(gallery)) {
             case ErrorCode.IO_ERROR -> response.failure("图片:" + gallery.getName() + "删除失败，IO错误");
             case ErrorCode.FILE_NOT_FOUND -> response.failure("图片:" + gallery.getName() + "删除失败，文件不存在");
             case 0 -> response.success();
+            // 节点无响应/超时会返回 -1 等非枚举值；必须显式判失败，
+            // 否则 result 保持未设置，末尾的 response.get("result") 会抛 NPE。
+            default -> response.failure("图片:" + gallery.getName() + "删除失败，节点无响应");
         }
-        if (response.get("result").equals("failure"))
+        if (!response.isSuccess())
             log.info(response.getData());
         return response.toJSONString();
     }
@@ -314,110 +446,75 @@ public class GalleryManageService {
         CustomConfiguration lastResetAmountTime = configurationMapper.selectConfiguration(CustomConfiguration.LAST_RESET_AMOUNT_TIME);
         Map<String, String> data = new HashMap<>();
 
-        data.put("weekUsedAmount", CustomUtil.fileSizeToString(Long.parseLong(weekUsedAmount.getValue())));
+        // 配置行缺失时给出默认值，避免 NPE 让用量接口整体不可用。
-        data.put("lastResetAmountTime", lastResetAmountTime.getValue());
+        String usedValue = weekUsedAmount == null || weekUsedAmount.getValue() == null
+                ? "0" : weekUsedAmount.getValue();
+        long used;
+        try {
+            used = Long.parseLong(usedValue);
+        } catch (NumberFormatException e) {
+            log.warn("每周用量配置值非法，按 0 处理: {}", usedValue);
+            used = 0L;
+        }
+        data.put("weekUsedAmount", CustomUtil.fileSizeToString(used));
+        data.put("lastResetAmountTime",
+                lastResetAmountTime == null || lastResetAmountTime.getValue() == null
+                        ? "" : lastResetAmountTime.getValue());
 
-        response.success(new ObjectMapper().valueToTree(data).toString());
+        response.success(objectMapper.valueToTree(data));
         return response.toJSONString();
     }
 
     public String cacheImagesKey(String url) {
-        Response response = Response.generateResponse();
-        String gid = String.valueOf(GalleryUtil.parseGid(url));
-        GidToKey gidToKey = imageCacheMapper.selectKeyByGid(gid);
-        //已缓存过，直接返回
-        if(gidToKey != null) {
-            return response.success(objectMapper.valueToTree(gidToKey)).toJSONString();
-        }
-
         try {
-            gidToKey = new GidToKey();
+            GidToKey index = galleryIndexService.ensureIndex(url);
-            gidToKey.setGid(gid);
+            return Response.generateResponse().success(objectMapper.valueToTree(index)).toJSONString();
-            gidToKey.setKey(url.split("/")[5].strip());
+        } catch (com.lion.lionwebsite.Exception.GalleryIndexException error) {
-            ArrayList<ImageKeyCache> imageKeyCaches = GalleryUtil.parseImageKeys(url);
+            String message = switch (error.getReason()) {
-            if(imageKeyCaches == null)
+                case INVALID_LINK -> "链接错误";
-                return response.failure("该图片已下架或已被删除").toJSONString();
+                case UNAVAILABLE -> "该图片已下架或已被删除";
-            gidToKey.setPages(imageKeyCaches.size());
+                case MALFORMED, TRANSIENT -> "网络波动或其他异常";
-            imageCacheMapper.insertGidToKey(gidToKey);
+            };
-            for (ImageKeyCache imageKeyCache : imageKeyCaches)
+            log.warn("缓存图片索引失败 reason={}", error.getReason());
-                imageCacheMapper.insertImageKeyCache(imageKeyCache);
+            return Response._failure(message);
-            response.success(objectMapper.valueToTree(gidToKey));
+        } catch (RuntimeException error) {
-        }catch (IOException e){
+            log.warn("缓存图片索引失败 errorType={}", error.getClass().getSimpleName());
-            log.error(e.getMessage());
+            return Response._failure("网络波动或其他异常");
-            response.failure("网络波动或其他异常");
         }
-        return  response.toJSONString();
     }
 
-    String[] suffixes = {".avif", ".gif"};
     public Callable<?> getCachedImage(String gid, Integer page, HttpServletRequest request, HttpServletResponse response) {
-        //检查文件夹是否存在
+        Path directory = Path.of(cachePath, gid);
-        File folder = new File(cachePath + gid);
+        String name = String.valueOf(page);
-        if(!folder.isDirectory())
+        Path cached = ImageFileCache.find(directory, name);
-            folder.mkdirs();
+        if (cached != null) {
-
+            FileDownload.export(request, response, cached.toString());
-        //检查对应图片是否存在，存在则直接返回
+            return null;
-        for (String suffix : suffixes) {
-            if(new File(cachePath + gid + "/" + page + suffix).exists()){
-                FileDownload.export(request, response, cachePath + gid + "/" + page + suffix);
-                return null;
-            }
         }
-
-        //检查该图片缓存是否存在
-        GidToKey gidToKey = imageCacheMapper.selectKeyByGid(gid);
-        if(gidToKey == null)
-            try {
-                log.error("未缓存gid:{}", gid);
-                response.sendError(404);
-                return null;
-            }catch (IOException e){
-                log.warn("sendError 404 failed", e);
-                return null;
-            }
-
         return () -> {
-                if(response.isCommitted()) {
+            if (response.isCommitted()) return null;
-                    log.info("连接已关闭: gid={} page={}", gid, page);
+            try {
-                    return null;
+                Path image = ImageFileCache.get(directory, name, () -> {
-                }
+                    GidToKey gidToKey = imageCacheMapper.selectKeyByGid(gid);
-
+                    ImageKeyCache imageKey = imageCacheMapper.selectImageKeyCacheByGidAndPage(gid, page);
-                String imageUrl = null;
+                    if (gidToKey == null || imageKey == null)
-                //获取该图片key
+                        throw new IOException("图片索引不存在");
-                ImageKeyCache imageKeyCache = imageCacheMapper.selectImageKeyCacheByGidAndPage(gid, page);
+                    for (int attempt = 0; attempt < 2; attempt++) {
-                if (imageKeyCache == null) {
+                        String url = GalleryUtil.getImageUrl(getMpvKey(gidToKey.toUrl()), imageKey);
-                    CustomUtil.fourZeroFour(response);
+                        if (url != null) return url;
-                    return null;
+                        GalleryUtil.refreshMpvKey(gidToKey.toUrl());
-                }
+                    }
-
+                    throw new IOException("无法获取图片地址");
-                //获取图片地址
+                });
-                for (int i = 0; i < 2; i++) {
+                FileDownload.export(request, response, image.toString());
-                    imageUrl = GalleryUtil.getImageUrl(getMpvKey(gidToKey.toUrl()), imageKeyCache);
+            } catch (InterruptedException e) {
-                    if (imageUrl != null)
+                Thread.currentThread().interrupt();
-                        break;
+                if (!response.isCommitted()) response.sendError(503);
-                    GalleryUtil.refreshMpvKey(gidToKey.toUrl());
+            } catch (Exception e) {
-                }
+                log.warn("获取在线图片失败: gid={} page={} errorType={}", gid, page, e.getClass().getSimpleName());
-
+                if (!response.isCommitted()) response.sendError(404);
-                if (imageUrl == null) {
+            }
-                    CustomUtil.fourZeroFour(response);
+            return null;
-                    log.error("获取图片url失败:gid={} page={} imageKey={}", gid, page, imageKeyCache.getImgkey());
-                    return null;
-                }
-
-                //下载图片，转格式并返回
-                String suffix = imageUrl.substring(imageUrl.lastIndexOf("."));
-                String imagePath = cachePath + gid + "/" + page + suffix;
-                try {
-                    new URI(imageUrl).toURL().openConnection().getInputStream().transferTo(new FileOutputStream(imagePath));
-                }catch (Exception e){
-                    log.error("下载图片失败:url{}", imageUrl, e);
-                    CustomUtil.fourZeroFour(response);
-                    return null;
-                }
-                if (!suffix.equals(".gif"))
-                    imagePath = GalleryUtil.convertImg(imagePath, suffix);
-                FileDownload.export(request, response, imagePath);
-                return null;
         };
     }
 
@@ -431,14 +528,50 @@ public class GalleryManageService {
 
         Gallery[] galleries = galleryMapper.selectUnDoneGalleries();
         if(galleries != null && galleries.length != 0) {
-            log.info("发送未下载完成图片至节点,{}本", galleries.length);
+            // 只重投「确实已提交上游」的任务：提交未知/预占中/待删除的任务重投会变成
-            for (Gallery gallery : galleries)
+            // 未计量副作用（节点侧显示下载完成但没有任何额度记录）。
+            int sent = 0;
+            int skipped = 0;
+            for (Gallery gallery : galleries) {
+                if (lifecycleService != null
+                        && !lifecycleService.resolveDispatch(gallery.getGid()).dispatchable()) {
+                    skipped++;
+                    continue;
+                }
                 remoteService.addGalleryToQueue(gallery);
-            response.success(String.format("发送未下载完成图片至节点,%s本", galleries.length));
+                sent++;
+            }
+            log.info("发送未下载完成图片至节点,{}本（跳过需要对账的{}本）", sent, skipped);
+            if (sent == 0)
+                response.failure("没有可安全重投的任务，需先人工对账提交未知的任务");
+            else
+                response.success(String.format("发送未下载完成图片至节点,%s本", sent));
         }else{
             response.failure("当前没有未下载完成的图片");
         }
 
         return response.toJSONString();
     }
+
+    public String retryGallery(int gid){
+        Gallery gallery = galleryMapper.selectGalleryByGid(gid);
+        if(gallery == null)
+            return Response._failure("任务不存在");
+        if("下载完成".equals(gallery.getStatus()))
+            return Response._success("下载完成");
+        if(remoteService.isDead())
+            return Response._failure("节点不在线，无法重试");
+        // 提交结果未知（UNKNOWN）或正在删除的任务不能重试：上游不支持幂等，重发会让
+        // 「可能已受理但未计量」的任务在节点侧变成下载完成却 0 额度。这类任务需人工对账。
+        if (lifecycleService != null) {
+            var decision = lifecycleService.resolveDispatch(gid);
+            if (decision.kind() == GalleryTaskLifecycleService.DispatchDecision.Kind.REFUSE)
+                return Response._failure("该任务提交结果未知或正在删除，请先人工对账后再重试");
+        }
+
+        RemoteService.RetryResult retryResult = remoteService.retryGallery(gallery);
+        if(retryResult.success())
+            return Response._success(retryResult.message());
+        return Response._failure(retryResult.message());
+    }
 }

src/main/java/com/lion/lionwebsite/Service/GalleryTaskLifecycleService.java

@@ -0,0 +1,783 @@
+package com.lion.lionwebsite.Service;
+
+import com.lion.lionwebsite.Dao.normal.*;
+import com.lion.lionwebsite.Domain.*;
+import com.lion.lionwebsite.Exception.ResolutionNotMatchException;
+import com.lion.lionwebsite.Message.TaskCommandMessage;
+import com.lion.lionwebsite.Message.TaskReportMessage;
+import com.lion.lionwebsite.Util.PreparedGallery;
+import com.lion.lionwebsite.Util.Response;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.support.TransactionTemplate;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import static com.lion.lionwebsite.Util.CustomUtil.objectMapper;
+
+/**
+ * 下载任务的持久化生命周期（协议 v2）。
+ *
+ * <p>核心约束：
+ * <ol>
+ *   <li><b>先保存意图，再产生外部副作用</b>：同一 gid 的唯一 CREATE 意图先落库（占位任务行 + RESERVED 操作记录），
+ *       通过 gid 的主键唯一约束把并发创建收敛成「一个赢家」；</li>
+ *   <li><b>SUBMITTING 之后绝不自动重发</b>：上游不支持幂等，提交结果不确定时只能落 UNKNOWN，等显式对账/解决；</li>
+ *   <li><b>提交结果与额度用一个短事务写入</b>：Gallery 与 weekUsedAmount 要么一起成功，要么一起回滚，
+ *       事务提交之后才把 DOWNLOAD 命令下发给节点；</li>
+ *   <li><b>删除失败保留记录</b>：先落待删除意图，节点确认（或文件已不存在）后才在同一事务里删任务行并留墓碑；
+ *       失败则保留 Gallery 与 DELETE_PENDING 意图，可沿原记录重试且复用同一删除 operationId。</li>
+ * </ol>
+ *
+ * <p>所有网络调用都发生在事务之外；事务回调内部不做 I/O，也不吞异常（吞掉会错误提交）。
+ */
+@Service
+@Slf4j
+public class GalleryTaskLifecycleService implements TaskReportHandler {
+
+    final GalleryMapper galleryMapper;
+
+    final CollectMapper collectMapper;
+
+    final CustomConfigurationMapper configurationMapper;
+
+    final UserMapper userMapper;
+
+    final TaskOperationRepository taskOperationRepository;
+
+    final UpstreamGateway upstreamGateway;
+
+    final RemoteService remoteService;
+
+    /**
+     * 短全局创建预占锁。
+     *
+     * <p>只有「登记唯一 CREATE 意图」这一小段数据库写入在锁内，网络调用一律在锁外。
+     * 单进程内它把并发同 gid 创建直接收敛成一个赢家；跨进程的正确性仍由
+     * {@code task_operation}/{@code gallery} 的主键唯一约束兜底。
+     */
+    private final Object reservationLock = new Object();
+
+    /**
+     * 测试钩子：进入上游只读解析之前执行。
+     * 用来让并发删除发生在预占之后、SUBMITTING 之前。生产环境是空实现。
+     */
+    volatile Runnable beforePrepare = () -> { };
+
+    /**
+     * 测试钩子：SUBMITTING 已持久化之后、真正 POST 上游之前执行。
+     * 用来制造「提交瞬间任务被删除」的 late generation 场景。生产环境是空实现。
+     */
+    volatile Runnable afterMarkSubmitting = () -> { };
+
+    /** 主库事务模板；测试可注入内存 sqlite 的事务模板。 */
+    TransactionTemplate transactions;
+
+    public GalleryTaskLifecycleService(GalleryMapper galleryMapper,
+                                       CollectMapper collectMapper,
+                                       CustomConfigurationMapper configurationMapper,
+                                       UserMapper userMapper,
+                                       TaskOperationRepository taskOperationRepository,
+                                       UpstreamGateway upstreamGateway,
+                                       RemoteService remoteService,
+                                       @Qualifier("mainTransactionTemplate") TransactionTemplate transactions) {
+        this.galleryMapper = galleryMapper;
+        this.collectMapper = collectMapper;
+        this.configurationMapper = configurationMapper;
+        this.userMapper = userMapper;
+        this.taskOperationRepository = taskOperationRepository;
+        this.upstreamGateway = upstreamGateway;
+        this.remoteService = remoteService;
+        this.transactions = transactions;
+    }
+
+    /** 测试用：替换事务模板或在没有 Spring 事务时退化为直连执行。 */
+    void setTransactions(TransactionTemplate transactions) {
+        this.transactions = transactions;
+    }
+
+    /**
+     * 一次「登记创建意图」的结果。
+     *
+     * <p>只有赢家能继续做外部副作用；输家（已存在有效意图 / 数据库竞争失败）
+     * 一律转成业务失败，绝不再 POST 上游。
+     */
+    private enum ReserveOutcome {
+        /** 已成功登记唯一 CREATE 意图，可以做只读解析与提交。 */
+        RESERVED,
+        /** 同一 gid 已存在有效意图（或任务行）。 */
+        DUPLICATE,
+        /** 登记时的数据库竞争/失败：没有产生任何副作用，必须转业务失败。 */
+        CONTENDED
+    }
+
+    /** 一次「登记创建意图」的返回：结果 + 赢家持有的操作记录。 */
+    private record Reservation(ReserveOutcome outcome, TaskOperation operation) {
+    }
+
+    /**
+     * 单次下发决策。
+     *
+     * <p>把「能不能把这个任务交给节点」从「下载是否已提交」里拆出来：
+     * 未确认上游提交结果（UNKNOWN / 预占 / 待删除 / 删除墓碑）绝不能下发，
+     * 否则未计量的人工对账任务可能在节点侧变成「下载完成却 0 额度」。
+     */
+    public static final class DispatchDecision {
+
+        public enum Kind {
+            /** 当前 operation 已是 SUBMITTED：可以按稳定 operationId 下发。 */
+            READY,
+            /** 迁移前的旧任务行：没有操作记录但历史上确实提交过下载。 */
+            LEGACY,
+            /** 不可下发：状态不明或被删除，下发会产生未计量副作用。 */
+            REFUSE
+        }
+
+        private final Kind kind;
+
+        private final String operationId;
+
+        private DispatchDecision(Kind kind, String operationId) {
+            this.kind = kind;
+            this.operationId = operationId;
+        }
+
+        public Kind kind() {
+            return kind;
+        }
+
+        public String operationId() {
+            return operationId;
+        }
+
+        /** 只有 READY/LEGACY 允许真正下发到节点。 */
+        public boolean dispatchable() {
+            return kind != Kind.REFUSE && operationId != null;
+        }
+
+        /** 拒绝下发（供调用方与测试构造）。 */
+        public static DispatchDecision refuse() {
+            return REFUSE;
+        }
+
+        /** 可直接下发（供测试构造）。 */
+        public static DispatchDecision ready(String operationId) {
+            return new DispatchDecision(Kind.READY, operationId);
+        }
+    }
+
+    private static final DispatchDecision REFUSE = new DispatchDecision(DispatchDecision.Kind.REFUSE, null);
+
+    /**
+     * 一次删除登记的返回。
+     *
+     * <p>用显式结果替代「null 即退避到裸删除」的旧语义：
+     * 被拒绝时调用方必须回业务失败，不能绕过待删除意图直接删节点文件。
+     */
+    public record DeleteIntent(boolean accepted, String deleteOperationId, String message) {
+
+        static DeleteIntent refused(String message) {
+            return new DeleteIntent(false, null, message);
+        }
+
+        static DeleteIntent accepted(String deleteOperationId) {
+            return new DeleteIntent(true, deleteOperationId, null);
+        }
+    }
+
+    /** 在事务里执行；没有配置事务模板时候直接执行（仅便于构造 mock 测试）。 */
+    private <T> T inTransaction(java.util.function.Supplier<T> body) {
+        TransactionTemplate template = transactions;
+        if (template == null)
+            return body.get();
+        return template.execute(status -> {
+            try {
+                return body.get();
+            } catch (RuntimeException e) {
+                // 回调里必须把异常继续抛出，否则 Spring 会把只读了一半的事务当成正常提交。
+                status.setRollbackOnly();
+                throw e;
+            }
+        });
+    }
+
+    /**
+     * 创建任务的持久化前置：在同一个事务里登记唯一 CREATE 意图。
+     *
+     * <p>同时写入可见的占位任务行（状态「提交中」），这样提交期间任务列表就能解析该 gid，
+     * 不会出现「上游已受理但本地查不到」的空窗。
+     *
+     * @return 已登记意图（赢家）返回它；同一 gid 已有有效意图返回 {@code null}（输家）。
+     */
+    private Reservation reserveCreateIntent(int gid, String placeholderName, int downloaderId) {
+        // 锁内只做数据库写入：把并发同 gid 创建串行化，网络调用留在锁外。
+        synchronized (reservationLock) {
+            try {
+                TaskOperation operation = inTransaction(() -> {
+                    TaskOperation existingOperation = taskOperationRepository.selectByGid(gid);
+                    Gallery existingGallery = galleryMapper.selectGalleryByGid(gid);
+                    if (existingOperation != null) {
+                        // 只有「删除已完成」的墓碑才允许用全新 operationId 重新创建（显式重建）。
+                        if (!TaskOperation.STATE_DELETED.equals(existingOperation.getState()))
+                            return null;
+                        if (existingGallery != null)
+                            return null;
+                        String operationId = TaskProtocol.newDownloadOperationId();
+                        taskOperationRepository.reactivate(gid, operationId, TaskOperation.STATE_RESERVED, now());
+                        insertPlaceholder(gid, placeholderName, downloaderId);
+                        return taskOperationRepository.selectByGid(gid);
+                    }
+                    if (existingGallery != null)
+                        return null;
+                    TaskOperation created = new TaskOperation();
+                    created.setGid(gid);
+                    created.setOperationId(TaskProtocol.newDownloadOperationId());
+                    created.setState(TaskOperation.STATE_RESERVED);
+                    created.setUpdateTime(now());
+                    taskOperationRepository.insert(created);
+                    insertPlaceholder(gid, placeholderName, downloaderId);
+                    return created;
+                });
+                return operation == null
+                        ? new Reservation(ReserveOutcome.DUPLICATE, null)
+                        : new Reservation(ReserveOutcome.RESERVED, operation);
+            } catch (RuntimeException e) {
+                // 数据库竞争/失败发生在任何外部副作用之前，绝不能穿透成 500，也不能继续提交。
+                log.warn("登记创建意图失败，按业务失败处理 gid={} error={}", gid, e.getClass().getSimpleName());
+                return new Reservation(ReserveOutcome.CONTENDED, null);
+            }
+        }
+    }
+
+    /** 写入占位任务行：让提交期间的任务在列表里可见。 */
+    private void insertPlaceholder(int gid, String name, int downloaderId) {
+        Gallery placeholder = new Gallery();
+        placeholder.setGid(gid);
+        placeholder.setName(name);
+        placeholder.setStatus(TaskStatus.PENDING_SUBMIT);
+        placeholder.setDownloader(downloaderId);
+        placeholder.setCreateTime(System.currentTimeMillis() / 1000);
+        placeholder.setProceeding(0);
+        galleryMapper.insertGallery(placeholder);
+    }
+
+    /**
+     * 标记为正在提交，并用 CAS 确认这一代意图仍然有效。
+     *
+     * <p>只有当前状态与 operationId 都匹配（RESERVED → SUBMITTING）才返回 true；
+     * 期间被删除或重建返回 false，调用方必须停下，绝不能再 POST 上游。
+     *
+     * @return true 表示已持久化 SUBMITTING，可以安全产生上游副作用
+     */
+    boolean markSubmitting(String operationId, int gid) {
+        return inTransaction(() -> taskOperationRepository.compareAndSetCreateState(gid, operationId,
+                TaskOperation.STATE_RESERVED, TaskOperation.STATE_SUBMITTING, now()) == 1);
+    }
+
+    /**
+     * 提交结果未知（超时/断连/中断）。保留意图，等待人工对账，不自动重发。
+     *
+     * <p>TaskOperation 与 Gallery 状态在同一个短事务里更新：
+     * 操作落 UNKNOWN 而任务行仍显示「提交中」会让运营侧误以为还能自动重试，
+     * 因此两边必须一致地表达「不确定，需要人工对账」。
+     */
+    void markUnknown(String operationId, int gid) {
+        inTransaction(() -> {
+            int advanced = taskOperationRepository.compareAndSetCreateState(gid, operationId,
+                    TaskOperation.STATE_SUBMITTING, TaskOperation.STATE_UNKNOWN, now());
+            // 只有本次这一代确实从 SUBMITTING 推进到 UNKNOWN 时才同步任务行：
+            // 若期间已被删除/重建（CAS 返回 0），绝不能再改那条记录。
+            if (advanced != 1)
+                return null;
+            Gallery gallery = galleryMapper.selectGalleryByGid(gid);
+            if (gallery != null && !TaskStatus.UNKNOWN.equals(gallery.getStatus()))
+                galleryMapper.updateGalleryStatus(gid, TaskStatus.UNKNOWN);
+            return null;
+        });
+    }
+
+    /**
+     * 提交成功后的「一次性短事务」：写入 Gallery 行、累计周用量、把操作推进为 SUBMITTED。
+     * 三者同一个事务，任何一个失败都一起回滚，避免出现「任务存在但用量未计」这类不一致。
+     */
+    /**
+     * 提交成功后的落库（带世代校验）。
+     *
+     * @param expectedOperationId 本次提交所归属的 operationId；只有它仍是当前有效意图时才能落库，
+     *                            否则（被删除/重建）必须抛错，避免复活已删 gid 或污染新世代
+     */
+    int persistSubmitted(Gallery gallery, int downloaderId, String expectedOperationId) {
+        return inTransaction(() -> {
+            TaskOperation operation = taskOperationRepository.selectByGid(gallery.getGid());
+            // 严格匹配本次世代：任务被删除、被重建或换了 operationId 时都不能落库。
+            if (operation == null || TaskOperation.STATE_DELETED.equals(operation.getState())
+                    || TaskOperation.STATE_DELETE_PENDING.equals(operation.getState()))
+                throw new IllegalStateException("任务已删除或没有有效创建意图，禁止落库复活 gid=" + gallery.getGid());
+            if (expectedOperationId == null || !expectedOperationId.equals(operation.getOperationId()))
+                throw new IllegalStateException("创建意图世代不匹配，禁止落库 gid=" + gallery.getGid());
+            // 幂等：同一意图重复落库（例如上游已提交后重跑）不得把用量累计两次。
+            boolean alreadyCounted = TaskOperation.STATE_SUBMITTED.equals(operation.getState());
+            gallery.setDownloader(downloaderId);
+            gallery.set_download(true);
+            if (!TaskStatus.SUBMITTED.equals(gallery.getStatus()))
+                gallery.setStatus(TaskStatus.SUBMITTED);
+            Gallery existing = galleryMapper.selectGalleryByGid(gallery.getGid());
+            if (existing == null)
+                galleryMapper.insertGallery(gallery);
+            else
+                galleryMapper.updateGallery(gallery);
+            if (!alreadyCounted)
+                configurationMapper.incrementConfiguration(CustomConfiguration.WEEK_USED_AMOUNT, gallery.getFileSize());
+            taskOperationRepository.updateState(gallery.getGid(), TaskOperation.STATE_SUBMITTED, now());
+            return 1;
+        });
+    }
+
+    /**
+     * 预占式创建：登记 gid 唯一意图（提交任务行占位）→ 只读解析上游 → 标 SUBMITTING → 真正提交。
+     *
+     * <p>上游提交发生在事务之外，且只在 SUBMITTING 已持久化之后执行一次。网络异常一律落 UNKNOWN。
+     */
+    public Response createTask(int gid, String placeholderName, String link, String targetResolution, int downloaderId) {
+        Response response = Response.generateResponse();
+        Reservation reservation = reserveCreateIntent(gid, placeholderName, downloaderId);
+        if (reservation.outcome() == ReserveOutcome.DUPLICATE) {
+            response.failure("任务队列已有此任务，请点击查找任务");
+            return response;
+        }
+        if (reservation.outcome() == ReserveOutcome.CONTENDED) {
+            // 预占阶段的数据库竞争不产生任何副作用；转业务失败，绝不下发上游、绝不穿透成 500。
+            response.failure("任务提交失败，请稍后重试");
+            return response;
+        }
+
+        // 解析上游是只读步骤；真正的 POST 只在 SUBMITTING 持久化之后发生。
+        // 生命周期约束：RESERVED 阶段被中断是安全的（可释放重来），SUBMITTING 之后一律按 UNKNOWN 处理。
+        return submitPreparedIntent(gid, reservation.operation(), link, targetResolution, downloaderId);
+    }
+
+    private Response submitPreparedIntent(int gid, TaskOperation operation, String link, String targetResolution,
+                                          int downloaderId) {
+        Response response = Response.generateResponse();
+        beforePrepare.run();
+        PreparedGallery prepared;
+        try {
+            prepared = upstreamGateway.prepare(link);
+        } catch (IOException e) {
+            log.warn("解析任务链接失败 gid={}", gid, e);
+            releaseReservation(gid, operation.getOperationId());
+            response.failure("IO错误，可能是网络波动");
+            return response;
+        } catch (RuntimeException e) {
+            log.warn("解析任务链接异常 gid={}", gid, e);
+            releaseReservation(gid, operation.getOperationId());
+            response.failure("提交任务失败，未知原因，请检查链接是否正常");
+            return response;
+        }
+        if (prepared == null || prepared.gallery() == null) {
+            releaseReservation(gid, operation.getOperationId());
+            response.failure("提交任务失败，未知原因，请检查链接是否正常");
+            return response;
+        }
+
+        Gallery gallery = prepared.gallery();
+        gallery.setGid(gid);
+
+        // CAS 确认这一代意图仍然有效（未被并发删除/重建），并把状态持久化为 SUBMITTING。
+        // 只有成功之后才允许真正 POST；失败说明任务已不在当前生命周期里，直接放弃。
+        if (!markSubmitting(operation.getOperationId(), gid)) {
+            log.warn("创建意图已失效（可能被并发删除），放弃提交 gid={} operationId={}",
+                    gid, operation.getOperationId());
+            response.failure("任务已被删除或状态已变化，请刷新任务列表");
+            return response;
+        }
+        afterMarkSubmitting.run();
+
+        Gallery submitted;
+        try {
+            submitted = upstreamGateway.submit(prepared, targetResolution);
+        } catch (ResolutionNotMatchException e) {
+            releaseReservation(gid, operation.getOperationId());
+            response.failure("提交失败，分辨率不存在");
+            return response;
+        } catch (IOException | RuntimeException e) {
+            // 超时或断连时上游可能已经受理，无法确认：只能记 UNKNOWN，绝不自动重发。
+            log.warn("上游提交结果未知 gid={} operationId={}", gid, operation.getOperationId(), e);
+            markUnknown(operation.getOperationId(), gid);
+            response.failure("上游提交结果未知，请稍后在任务列表中确认，不要重复提交");
+            return response;
+        }
+        if (submitted == null || !TaskStatus.SUBMITTED.equals(submitted.getStatus())) {
+            markUnknown(operation.getOperationId(), gid);
+            response.failure("上游提交结果未知，请稍后在任务列表中确认，不要重复提交");
+            return response;
+        }
+        submitted.setGid(gid);
+        try {
+            persistSubmitted(submitted, downloaderId, operation.getOperationId());
+        } catch (RuntimeException e) {
+            // 上游已受理但本地落库失败：保留 SUBMITTING 意图并标 UNKNOWN，任务行仍在列表里可对账。
+            log.error("提交成功后落库失败 gid={} operationId={}", gid, operation.getOperationId(), e);
+            markUnknown(operation.getOperationId(), gid);
+            response.failure("任务已提交，但本地保存失败，请在任务列表中确认");
+            return response;
+        }
+        // 只有事务提交之后才向节点下发命令；重复下发由节点按 operationId 去重。
+        byte dispatchResult = dispatchDownload(gid, submitted.getName());
+        Gallery current = galleryMapper.selectGalleryByGid(gid);
+        Gallery payload = current == null ? submitted : current;
+        if (dispatchResult == 0)
+            response.success(objectMapper.valueToTree(payload));
+        else
+            response.failure("任务已保存，但节点未确认接收；请刷新任务列表后重试");
+        return response;
+    }
+
+    /**
+     * 提交成功后的落库 + 下发。落库（含用量）在一个短事务里完成，事务提交后才向节点发命令。
+     *
+     * <p>先解析当前世代再落库：世代不存在（未提交过 / 已删除）时不落库也不下发。
+     *
+     * @return 已持久化的 Gallery；数据库失败或世代无效时抛出异常，调用方回业务失败且不下发节点。
+     */
+    public Gallery persistAndDispatch(Gallery gallery, int downloaderId) {
+        DispatchDecision decision = resolveDispatch(gallery.getGid());
+        if (!decision.dispatchable())
+            throw new IllegalStateException("任务没有可下发的有效世代 gid=" + gallery.getGid());
+        persistSubmitted(gallery, downloaderId, decision.operationId());
+        dispatchDownload(gallery.getGid(), gallery.getName());
+        return gallery;
+    }
+
+    /** 向节点下发 DOWNLOAD 命令（复用当前有效 operationId），返回节点结果码。 */
+    public byte dispatchDownload(int gid, String name) {
+        DispatchDecision decision = resolveDispatch(gid);
+        if (!decision.dispatchable())
+            return -1;
+        return remoteService.sendTaskCommand(TaskCommandMessage.ACTION_DOWNLOAD, decision.operationId(), gid, name);
+    }
+
+    /**
+     * 判定一个 gid 能否下发给节点，并为迁移前的旧任务补齐稳定 operationId。
+     *
+     * <p>规则：
+     * <ul>
+     *   <li>v2 任务只有 {@code SUBMITTED} 可下发；{@code UNKNOWN} 必须人工对账，
+     *       否则未计量的未知任务会在节点侧变成「下载完成却 0 额度」；</li>
+     *   <li>预占中的 {@code RESERVED}/{@code SUBMITTING}、待删除与删除墓碑都不下发；</li>
+     *   <li>没有任何操作记录、但任务行确实存在且状态已是「已提交」及之后的历史任务，
+     *       补建一个稳定 operationId 后再下发（这是唯一的 legacy 兼容路径）。</li>
+     * </ul>
+     */
+    public DispatchDecision resolveDispatch(int gid) {
+        TaskOperation operation = taskOperationRepository.selectByGid(gid);
+        if (operation != null && TaskOperation.STATE_SUBMITTED.equals(operation.getState())
+                && operation.getOperationId() != null)
+            return new DispatchDecision(DispatchDecision.Kind.READY, operation.getOperationId());
+        // 没有操作记录，或只有「旧世代」记录（缺 operationId）：必须先确认任务行确实已提交过，
+        // 再补一个稳定 operationId；UNKNOWN/预占/待删除一律拒绝。
+        if (operation != null && !TaskOperation.STATE_SUBMITTED.equals(operation.getState()))
+            return REFUSE;
+        if (!isLegacySubmitted(gid))
+            return REFUSE;
+        String freshId = ensureStableOperationId(gid);
+        return freshId == null ? REFUSE : new DispatchDecision(DispatchDecision.Kind.LEGACY, freshId);
+    }
+
+    /** 迁移前的旧任务行：没有操作记录，但状态表明上游确实已受理过下载，可安全重投。 */
+    private boolean isLegacySubmitted(int gid) {
+        Gallery gallery = galleryMapper.selectGalleryByGid(gid);
+        if (gallery == null || gallery.getStatus() == null)
+            return false;
+        return switch (gallery.getStatus()) {
+            case TaskStatus.SUBMITTED, TaskStatus.DOWNLOADING, TaskStatus.WAITING_COMPRESS,
+                 TaskStatus.COMPRESSING -> true;
+            // 提交未知 / 提交中 / 待删除 / 删除失败 一律不算已提交，不能下发。
+            default -> false;
+        };
+    }
+
+    /**
+     * 为一个已经真正提交过的旧任务持久化稳定 operationId。
+     *
+     * <p>必须是短事务写入、先落库后返回，之后重投/重连才复用同一个 ID；
+     * 用 {@code insert or ignore} + 回读，避免与并发创建互相覆盖。
+     *
+     * @return 稳定 operationId；无法安全建立时返回 null（调用方不下发）
+     */
+    String ensureStableOperationId(int gid) {
+        // 与创建预占共用同一把短锁（锁内只有数据库写），并发为同一 gid 补 ID 时只能有一个赢家。
+        synchronized (reservationLock) {
+            String candidate = TaskProtocol.newDownloadOperationId();
+            return inTransaction(() -> {
+                if (taskOperationRepository.selectByGid(gid) == null)
+                    taskOperationRepository.insertIfAbsent(gid, candidate, TaskOperation.STATE_SUBMITTED, now());
+                else
+                    taskOperationRepository.assignOperationIdIfMissing(gid, candidate, now());
+                TaskOperation current = taskOperationRepository.selectByGid(gid);
+                if (current == null || current.getOperationId() == null)
+                    return null;
+                // 只有确实处于 SUBMITTED 的世代才可下发；并发写入的其他状态一律拒绝。
+                return TaskOperation.STATE_SUBMITTED.equals(current.getState()) ? current.getOperationId() : null;
+            });
+        }
+    }
+
+    /**
+     * 取消预占（解析失败、分辨率不存在等：还没有产生任何上游副作用）。
+     *
+     * <p>只删除与本次创建 intent 匹配的 RESERVED 记录：若期间该 gid 已被删除并重建
+     * （新的 operationId / 墓碑），这里绝不能把新世代记录抹掉。占位行同理只删「提交中」。
+     */
+    private void releaseReservation(int gid, String operationId) {
+        inTransaction(() -> {
+            // 只删与本代 operationId 匹配且仍停在 RESERVED/SUBMITTING 的记录。
+            int removed = taskOperationRepository.deleteReservationIfSameGeneration(gid, operationId);
+            // 只有确实删掉了本代预占记录，才能删对应的占位行：
+            // 若期间已出现新的 RESERVED 代，删除返回 0，此时绝不能误删新占位。
+            if (removed == 1) {
+                Gallery existing = galleryMapper.selectGalleryByGid(gid);
+                if (existing != null && TaskStatus.PENDING_SUBMIT.equals(existing.getStatus()))
+                    galleryMapper.deleteGalleryByGid(gid);
+            }
+            return null;
+        });
+    }
+
+    /**
+     * 删除的持久化部分。
+     *
+     * <p>正在创建意图（RESERVED/SUBMITTING）的任务不能删除：此刻 DELETE 与创建 POST 会同时发生，
+     * 随后创建落库还会把已删/重建的 gid 写回。这里直接拒绝，由用户在提交结果明确后再操作。
+     *
+     * @return 显式结果：被拒时调用方必须回业务失败，不能退避到裸删除
+     */
+    public DeleteIntent beginDelete(int gid) {
+        return inTransaction(() -> {
+            Gallery gallery = galleryMapper.selectGalleryByGid(gid);
+            if (gallery == null)
+                return DeleteIntent.refused("删除失败，该图片不存在");
+            TaskOperation operation = taskOperationRepository.selectByGid(gid);
+            if (operation != null && (TaskOperation.STATE_RESERVED.equals(operation.getState())
+                    || TaskOperation.STATE_SUBMITTING.equals(operation.getState())))
+                return DeleteIntent.refused("任务正在提交中，请等待提交结果明确后再删除");
+            if (operation == null) {
+                // 历史任务行没有操作记录：直接落一条 DELETE_PENDING 意图，避免中间态缺字段。
+                TaskOperation fresh = new TaskOperation();
+                fresh.setGid(gid);
+                fresh.setOperationId(TaskProtocol.newDownloadOperationId());
+                fresh.setDeleteOperationId(TaskProtocol.newDeleteOperationId());
+                fresh.setState(TaskOperation.STATE_DELETE_PENDING);
+                fresh.setUpdateTime(now());
+                taskOperationRepository.insert(fresh);
+                galleryMapper.updateGalleryStatus(gid, TaskStatus.DELETE_PENDING);
+                return DeleteIntent.accepted(fresh.getDeleteOperationId());
+            }
+            if (operation.getDeleteOperationId() == null) {
+                operation.setDeleteOperationId(TaskProtocol.newDeleteOperationId());
+                operation.setUpdateTime(now());
+            }
+            taskOperationRepository.updateDeleteIntent(gid, operation.getDeleteOperationId(),
+                    TaskOperation.STATE_DELETE_PENDING, now());
+            galleryMapper.updateGalleryStatus(gid, TaskStatus.DELETE_PENDING);
+            return DeleteIntent.accepted(operation.getDeleteOperationId());
+        });
+    }
+
+    /**
+     * 删除的完成部分：节点已确认（或文件已不存在）后，在一个短事务里删任务行、收藏并留墓碑。
+     *
+     * <p>事务提交前若失败，任务行与 DELETE_PENDING 意图都保留，可以继续重试。
+     * 删除意图 ID 必须匹配（防止并发删除/重建时抹掉别的一代），随后只把 DELETE_PENDING
+     * 世代推进为 DELETED；墓碑（DELETED 且无删除意图）不允许在这里被重新激活。
+     *
+     * @return true 表示本次删除意图已完成并留下墓碑
+     */
+    public boolean completeDelete(int gid, String deleteOperationId) {
+        return inTransaction(() -> {
+            TaskOperation operation = taskOperationRepository.selectByGid(gid);
+            if (operation == null || operation.getDeleteOperationId() == null
+                    || !operation.getDeleteOperationId().equals(deleteOperationId))
+                return false;
+            // 先清收藏再删任务行：收藏一侧在部分历史库上带有指向 gallery 的外键。
+            collectMapper.deleteByGid(gid);
+            galleryMapper.deleteGalleryByGid(gid);
+            int updated = taskOperationRepository.completeDeleteIfSameGeneration(gid, deleteOperationId,
+                    TaskOperation.STATE_DELETED, now());
+            return updated == 1;
+        });
+    }
+
+    /** 删除失败：保留任务行并记一条可重试的失败状态。 */
+    public void failDelete(int gid) {
+        inTransaction(() -> {
+            Gallery gallery = galleryMapper.selectGalleryByGid(gid);
+            if (gallery == null)
+                return null;
+            gallery.setStatus(TaskStatus.DELETE_FAILED);
+            galleryMapper.updateGallery(gallery);
+            return null;
+        });
+    }
+
+    /**
+     * 启动恢复：把上次中断在 SUBMITTING 的意图判为 UNKNOWN，并安全释放还停在 RESERVED 的预占。
+     *
+     * <p>这段恢复必须发生在任何自动重投之前：
+     * <ul>
+     *   <li>{@code SUBMITTING}：上游可能已经受理但本地无法确认，只能落 UNKNOWN（操作与任务行同时
+     *       更新为「提交未知」），交人工对账，绝不自动再 POST；</li>
+     *   <li>{@code RESERVED}：还没有产生任何上游副作用，重启后可以直接释放预占
+     *       （删掉匹配的 RESERVED 记录与「提交中」占位行），让用户重新提交。</li>
+     * </ul>
+     *
+     * @return 本次恢复（判未知 + 释放预占）处理的任务数
+     */
+    public int recoverInterruptedSubmissions() {
+        return inTransaction(() -> {
+            int recovered = 0;
+            for (TaskOperation operation : taskOperationRepository.selectByState(TaskOperation.STATE_SUBMITTING)) {
+                int advanced = taskOperationRepository.compareAndSetCreateState(operation.getGid(), operation.getOperationId(),
+                        TaskOperation.STATE_SUBMITTING, TaskOperation.STATE_UNKNOWN, now());
+                if (advanced != 1)
+                    continue;
+                Gallery gallery = galleryMapper.selectGalleryByGid(operation.getGid());
+                if (gallery != null && !TaskStatus.UNKNOWN.equals(gallery.getStatus()))
+                    galleryMapper.updateGalleryStatus(operation.getGid(), TaskStatus.UNKNOWN);
+                recovered++;
+            }
+            for (TaskOperation operation : taskOperationRepository.selectByState(TaskOperation.STATE_RESERVED)) {
+                // 还没 POST：释放匹配的预占记录与占位行，允许重启后重新提交。
+                // 只有确实删掉了这条本代 RESERVED 记录，才删其占位行；否则不动（可能已换代）。
+                int removed = taskOperationRepository.deleteReservationIfSameGeneration(operation.getGid(),
+                        operation.getOperationId());
+                if (removed == 1) {
+                    Gallery gallery = galleryMapper.selectGalleryByGid(operation.getGid());
+                    if (gallery != null && TaskStatus.PENDING_SUBMIT.equals(gallery.getStatus()))
+                        galleryMapper.deleteGalleryByGid(operation.getGid());
+                }
+                recovered++;
+            }
+            return recovered;
+        });
+    }
+
+    /** 已完成状态上报的处理：丢弃旧 revision、旧 operation、待删除任务与重复上报。 */
+    @Override
+    public CommittedReport apply(TaskReportMessage report) {
+        if (report == null || report.getReportId() == null || report.getGalleryTasks() == null)
+            return null;
+        Applied applied;
+        try {
+            applied = inTransaction(() -> applyInTransaction(report));
+        } catch (RuntimeException e) {
+            // 数据库失败：不返回可回执结果，节点会保留快照并稍后重投；失败写入绝不清任务。
+            log.warn("应用节点上报失败，未回执 reportId={}", report.getReportId(), e);
+            return null;
+        }
+        if (applied == null)
+            return null;
+        return new CommittedReport(report.getReportId(), applied.newlyCompleted(), applied.acceptedTasks());
+    }
+
+    /** 事务内应用上报的结果：新完成的任务与真正被接受的进度更新。 */
+    private record Applied(List<Gallery> newlyCompleted, List<GalleryTask> acceptedTasks) {
+    }
+
+    /**
+     * 在一个事务里应用上报。
+     *
+     * @return 非 null 表示已经提交（可以回 ACK，重复上报也会返回结果以停止重放）。
+     */
+    private Applied applyInTransaction(TaskReportMessage report) {
+        long revision = report.getRevision();
+        List<Gallery> newlyCompleted = new ArrayList<>();
+        List<GalleryTask> acceptedTasks = new ArrayList<>();
+        for (GalleryTask task : report.getGalleryTasks()) {
+            if (task == null)
+                continue;
+            TaskOperation operation = taskOperationRepository.selectByGid(task.getGid());
+            Gallery gallery = galleryMapper.selectGalleryByGid(task.getGid());
+            if (gallery == null) {
+                // 未知 gid（任务已删除）：忽略但 ACK，让节点停止重放。
+                log.debug("忽略节点上报的未知任务 gid={}", task.getGid());
+                continue;
+            }
+            String expectedOperationId = report.getOperationIds() == null
+                    ? null : report.getOperationIds().get(task.getGid());
+            if (operation == null) {
+                // 旧任务行（迁移前创建）没有操作记录：按显式生成策略补建并采纳上报里的 operationId。
+                operation = adoptGeneration(task.getGid(), expectedOperationId);
+            } else if (TaskOperation.STATE_DELETED.equals(operation.getState())) {
+                // 墓碑必须永久忽略旧上报：删除已完成的任务只能由显式 CREATE 重新建立新世代。
+                // （gallery 已被删除时上面的 null 分支已经提前忽略，这里防御性兜底。）
+                log.debug("忽略已删除 gid 的迟到上报 gid={}", task.getGid());
+                continue;
+            } else if (TaskOperation.STATE_DELETE_PENDING.equals(operation.getState())) {
+                log.info("忽略待删除任务的迟到上报 gid={}", task.getGid());
+                continue;
+            } else if (operation.getLastRevision() > 0 && revision <= operation.getLastRevision()) {
+                log.debug("丢弃过期上报 gid={} revision={} lastRevision={}",
+                        task.getGid(), revision, operation.getLastRevision());
+                continue;
+            } else if (operation.getOperationId() != null) {
+                // v2 任务必须有归属：缺 operationId 或与当前世代不符都不能改当前任务，
+                // 否则「删除后重建」的新世代会被旧上报污染。
+                if (expectedOperationId == null || !operation.getOperationId().equals(expectedOperationId)) {
+                    log.info("丢弃无法归属/旧世代的迟到上报 gid={} 上报={} 当前={}",
+                            task.getGid(), expectedOperationId, operation.getOperationId());
+                    continue;
+                }
+            }
+
+            String status = TaskStatus.fromReport(task.getStatus());
+            if (status == null) {
+                log.warn("未知上报状态码 gid={} status={}", task.getGid(), task.getStatus());
+                continue;
+            }
+            gallery.setProceeding(task.getProceeding());
+            if (task.getName() != null)
+                gallery.setName(task.getName());
+            boolean justCompleted = TaskStatus.COMPLETE.equals(status)
+                    && !TaskStatus.COMPLETE.equals(gallery.getStatus());
+            gallery.setStatus(status);
+            galleryMapper.updateGallery(gallery);
+            taskOperationRepository.updateReportReceipt(task.getGid(), revision, report.getReportId(), now());
+            acceptedTasks.add(task);
+            if (justCompleted)
+                newlyCompleted.add(gallery);
+        }
+        return new Applied(newlyCompleted, acceptedTasks);
+    }
+
+    /**
+     * 为迁移前创建、尚无操作记录的历史任务建立一次「世代」：优先采纳上报里的 operationId；
+     * 旧节点不带 operationId 时保留 null，让后续同世代的进度上报仍能被接受。
+     *
+     * <p>不在这里凭空生成随机 ID：那会让第一份进度上报之后的所有旧上报都因「无法归属」被丢弃。
+     * 真正的稳定 operationId 会在首次自动下发时用 {@code ensureStableOperationId} 落库，
+     * 之后该世代即可被严格匹配。不会覆盖任何已有任务状态。
+     */
+    private TaskOperation adoptGeneration(int gid, String reportedOperationId) {
+        TaskOperation operation = new TaskOperation();
+        operation.setGid(gid);
+        operation.setOperationId(reportedOperationId);
+        operation.setState(TaskOperation.STATE_SUBMITTED);
+        operation.setUpdateTime(now());
+        taskOperationRepository.insert(operation);
+        return operation;
+    }
+
+    private static long now() {
+        return System.currentTimeMillis() / 1000;
+    }
+
+    /** 供装配层解析当前有效 operationId（避免装配代码访问包私有字段）。 */
+    public String currentOperationId(int gid) {
+        TaskOperation operation = taskOperationRepository.selectByGid(gid);
+        return operation == null ? null : operation.getOperationId();
+    }
+}

src/main/java/com/lion/lionwebsite/Service/LocalService.java

@@ -2,18 +2,16 @@ package com.lion.lionwebsite.Service;
 
 import com.lion.lionwebsite.Dao.normal.CustomConfigurationMapper;
 import com.lion.lionwebsite.Dao.normal.GalleryMapper;
-import com.lion.lionwebsite.Dao.normal.ShareFileMapper;
 import com.lion.lionwebsite.Domain.CustomConfiguration;
-import com.lion.lionwebsite.Domain.ShareFile;
 import com.lion.lionwebsite.Util.CustomUtil;
 import com.lion.lionwebsite.Util.GalleryUtil;
 import lombok.Data;
 import lombok.extern.slf4j.Slf4j;
-import org.apache.http.HttpEntity;
+import org.apache.hc.client5.http.classic.methods.HttpGet;
-import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
-import org.apache.http.client.methods.HttpGet;
+import org.apache.hc.client5.http.impl.classic.CloseableHttpResponse;
-import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.hc.client5.http.impl.classic.HttpClients;
-import org.apache.http.impl.client.HttpClients;
+import org.apache.hc.core5.http.HttpEntity;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Service;
@@ -23,6 +21,7 @@ import java.net.URLDecoder;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.*;
 import java.nio.file.attribute.BasicFileAttributes;
+import java.nio.file.attribute.FileTime;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.*;
@@ -45,14 +44,14 @@ public class LocalService{
 
     final CustomConfigurationMapper configurationMapper;
 
-    final ShareFileMapper shareFileMapper;
-
     final GalleryMapper galleryMapper;
 
     final PushService pushService;
 
     final RemoteService remoteService;
 
+    final SubscriptionRefreshScheduler subscriptionRefreshScheduler;
+
     /**
      * 检查连接是否有效，如果无效自动重连
      */
@@ -102,106 +101,23 @@ public class LocalService{
     }
 
     /**
-     * 定时更新订阅
+     * 手动「更新订阅」：立即刷新全部启用账号，供管理页按钮调用。
-     * @throws IOException 下载以及保存异常
+     *
+     * <p>定时刷新已移交 {@link SubscriptionRefreshScheduler}。原先这里还有一个
+     * {@code @Scheduled(fixedRate = 86400000)} 的定时入口，它会一次性刷新全部账号
+     * （十几个账号在十几秒内打满），且因为没有 initialDelay，每次重启都会立刻重刷一遍，
+     * 使上游看到的请求密度取决于部署频率。该入口已移除。
+     *
+     * <p>不再保留 {@code isManual} 参数：定时路径已不存在，留着它只会让人以为
+     * 「传 false 就是不刷新」，而实际语义是「什么都不做却报成功」。
      */
-    @Scheduled(fixedRate = 86400000)
+    public boolean updateSub() {
-    public void updateSubScheduler() throws IOException {
+        boolean success = subscriptionRefreshScheduler.refreshAllNow();
-        updateSub(false);
+        remoteService.requestSubscriptionSync();
-    }
+        if (success)
-
+            configurationMapper.updateConfiguration(CustomConfiguration.LAST_UPDATE_SUB_TIME,
-    /**
+                    CustomUtil.dateTimeFormatter().format(LocalDateTime.now()));
-     * 更新订阅链接的实际方法
+        return success;
-     */
-    public boolean updateSub(boolean isManual) throws IOException {
-        DateTimeFormatter dateTimeFormatter = CustomUtil.dateTimeFormatter();
-        CustomConfiguration customConfiguration = configurationMapper.selectConfiguration(CustomConfiguration.LAST_UPDATE_SUB_TIME);
-
-        //如果不是手动，则判断更新间隔是否满足，不满足则取消更新
-        if (!isManual) {
-            LocalDateTime lastUpdate = LocalDateTime.parse(customConfiguration.getValue(), CustomUtil.dateTimeFormatter());
-            LocalDateTime now = LocalDateTime.now();
-            now = now.plusHours(-3);
-            if(now.isBefore(lastUpdate))
-                return false;
-        }
-
-        File DouNaiClashFile = new File("sub/DouNaiClash.txt");
-        File DouNaiV2rayFile = new File("sub/DouNaiV2ray.txt");
-        File directory = new File("sub");
-
-        if(!directory.isDirectory())
-            Files.createDirectory(Paths.get("sub"));
-
-        List<String> DouNaiClash_profile;
-
-        //下载豆奶v2ray订阅
-        try(FileWriter writer = new FileWriter(DouNaiV2rayFile)) {
-            String DouNaiV2rayRaw = Get(DouNaiV2ray).getFirst();
-            String[] v2rayPlain = new String(Base64.getDecoder().decode(DouNaiV2rayRaw)).split("\n");
-            StringBuilder stringBuilder = new StringBuilder();
-            Pattern pattern = Pattern.compile("-?\\d+(\\.\\d+)?");
-
-            //过滤高倍率节点
-            for(String node: v2rayPlain){
-                String name = URLDecoder.decode(node.split("#")[1], StandardCharsets.UTF_8);
-                if(name.contains("流量")){
-                    Matcher matcher = pattern.matcher(name.substring(name.indexOf("(") + 1, name.indexOf(")")));
-
-                    if (matcher.find()) {
-                        // 将匹配到的数字添加到列表中
-                        float ratio = Float.parseFloat(matcher.group());
-                        if(ratio <= 2) {
-                            stringBuilder.append(node).append("\n");
-                            continue;
-                        }
-                    }
-                    stringBuilder.append(node).append("\n");
-                }
-                else{
-                    stringBuilder.append(node).append("\n");
-                }
-            }
-            writer.write(new String(Base64.getEncoder().encode(stringBuilder.toString().getBytes(StandardCharsets.UTF_8))));
-
-            log.info("load DouNai v2ray complete");
-        }catch (IOException e){
-            log.error("load DouNai v2ray failure", e);
-        }
-
-        //下载豆奶clash订阅
-        try(FileWriter writer = new FileWriter(DouNaiClashFile)) {
-            DouNaiClash_profile = Get(DouNaiClash);
-            //过滤高倍率节点
-            ArrayList<String> clashProcessed = new ArrayList<>();
-            boolean isProxies = false;
-            boolean skip = false;
-            for(String line: DouNaiClash_profile){
-                if(line.equals("proxies:"))
-                    isProxies = true;
-                else if(line.equals("proxy-groups:") && isProxies)
-                    isProxies = false;
-
-                if(isProxies) {
-                    if (line.contains("name"))
-                        skip = line.contains("流量");
-                    if (!skip)
-                        clashProcessed.add(line);
-                }
-                else
-                    if (!line.contains("流量"))
-                        clashProcessed.add(line);
-            }
-
-            for(String line: clashProcessed)
-                writer.write(line + "\n");
-            log.info("load DouNai clash complete");
-        }catch (IOException e){
-            log.error("load DouNai clash failure", e);
-        }
-
-        configurationMapper.updateConfiguration(CustomConfiguration.LAST_UPDATE_SUB_TIME, dateTimeFormatter.format(LocalDateTime.now()));
-        return true;
     }
 
     /**
@@ -217,7 +133,7 @@ public class LocalService{
         httpResponse = httpClient.execute(httpGet);
 
         HttpEntity responseEntity = httpResponse.getEntity();
-        int statusCode = httpResponse.getStatusLine().getStatusCode();
+        int statusCode = httpResponse.getCode();
         ArrayList<String> temp = new ArrayList<>();
 
         if (statusCode == 200) {
@@ -231,23 +147,6 @@ public class LocalService{
         return temp;
     }
 
-    /**
-     * 每天四点，清理过期分享码
-     */
-    @Scheduled(cron = "0 0 4 * * *")
-    public void checkShareCode(){
-        ShareFile[] shareFiles = shareFileMapper.selectAllShareFile();
-        Calendar now;
-        Calendar expireTime;
-        for(ShareFile shareFile: shareFiles){
-            now = Calendar.getInstance();
-            expireTime = Calendar.getInstance();
-            expireTime.setTime(shareFile.getExpireTime());
-            if(now.after(expireTime))
-                shareFileMapper.deleteShareFile(shareFile.getShareCode());
-        }
-    }
-
     /**
      * 每周，查看缩略图数量，按照访问时间排序，删除超出1w的部分
      */
@@ -255,13 +154,15 @@ public class LocalService{
     public void clearThumbnailCache(){
         String cachePath = "/storage/hentaiCache/";
         File directory = new File(cachePath);
-        List<Path> files = new ArrayList<>();
+        // 排序需要文件的最后访问时间。原先在比较器里每次重新读属性（n log n 次系统调用），
+        // 且属性读取失败会让整个排序抛 RuntimeException；这里在遍历时一次性带出属性。
+        List<Map.Entry<Path, FileTime>> files = new ArrayList<>();
         try {
             Files.walkFileTree(directory.toPath(), new SimpleFileVisitor<>() {
                 @Override
                 public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
                     if (attrs.isRegularFile()) {
-                        files.add(file);
+                        files.add(Map.entry(file, attrs.lastAccessTime()));
                     }
                     return CONTINUE;
                 }
@@ -270,22 +171,15 @@ public class LocalService{
             throw new RuntimeException(e);
         }
 
-        files.sort((f1, f2) -> {
+        files.sort(Map.Entry.comparingByValue());
-            try {
-                return Files.readAttributes(f1, BasicFileAttributes.class).lastAccessTime()
-                        .compareTo(Files.readAttributes(f2, BasicFileAttributes.class).lastAccessTime());
-            } catch (IOException e) {
-                throw new RuntimeException(e);
-            }
-        });
 
         if (files.size() > 10000) {
-            List<Path> toDelete = files.subList(0, files.size() - 10000);
+            List<Map.Entry<Path, FileTime>> toDelete = files.subList(0, files.size() - 10000);
-            for (Path file : toDelete) {
+            for (Map.Entry<Path, FileTime> entry : toDelete) {
                 try {
-                    Files.delete(file);
+                    Files.delete(entry.getKey());
                 }catch (IOException e){
-                    log.warn("删除缩略图缓存文件失败: {}", file, e);
+                    log.warn("删除缩略图缓存文件失败: {}", entry.getKey(), e);
                 }
             }
             log.info("Deleted {} files", toDelete.size());

src/main/java/com/lion/lionwebsite/Service/PersonalService.java

@@ -1,42 +1,18 @@
 package com.lion.lionwebsite.Service;
 
 
-import cn.hutool.core.io.FileUtil;
-import cn.hutool.core.util.RandomUtil;
 import com.lion.lionwebsite.Dao.normal.CustomConfigurationMapper;
-import com.lion.lionwebsite.Dao.normal.ShareFileMapper;
-import com.lion.lionwebsite.Dao.normal.UserMapper;
 import com.lion.lionwebsite.Domain.CustomConfiguration;
-import com.lion.lionwebsite.Domain.ShareFile;
-import com.lion.lionwebsite.Interceptor.TaskHandlerInterceptor;
-import com.lion.lionwebsite.Util.CustomUtil;
-import com.lion.lionwebsite.Util.FileDownload;
 import com.lion.lionwebsite.Util.Response;
-import com.fasterxml.jackson.databind.ObjectMapper;
 
-import jakarta.servlet.http.HttpServletRequest;
-import jakarta.servlet.http.HttpServletResponse;
 import lombok.Data;
 import lombok.extern.slf4j.Slf4j;
-import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
-import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
-import org.apache.tomcat.util.http.fileupload.IOUtils;
 import org.springframework.stereotype.Service;
-import org.springframework.web.multipart.MultipartFile;
 
-import java.io.BufferedOutputStream;
+import java.util.HashMap;
-import java.io.File;
+import java.util.Map;
-import java.io.IOException;
+
-import java.io.OutputStream;
+import static com.lion.lionwebsite.Util.CustomUtil.objectMapper;
-import java.net.URLDecoder;
-import java.nio.charset.StandardCharsets;
-import java.nio.file.*;
-import java.nio.file.attribute.BasicFileAttributes;
-import java.time.ZoneId;
-import java.time.format.DateTimeFormatter;
-import java.util.*;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
 
 
 @Service
@@ -45,219 +21,8 @@ import java.util.concurrent.Executors;
 public class PersonalService{
     final CustomConfigurationMapper configurationMapper;
 
-    final UserMapper userMapper;
-
-    final ShareFileMapper shareFileMapper;
-
-    final TaskHandlerInterceptor taskHandlerInterceptor;
-
-    String StoragePath = "/storage/";
-
-    DateTimeFormatter dateTimeFormatter = CustomUtil.dateTimeFormatter();
-
-    ExecutorService compressThreadPool = Executors.newFixedThreadPool(1);
-
     final PushService pushService;
 
-    /**
-     * 获取文件列表，同时带上分享码以及过期时间
-     * @param path 路径
-     * @return     文件列表
-     */
-    public String getFiles(String path)  {
-        Response response = Response.generateResponse();
-        path = URLDecoder.decode(path, StandardCharsets.UTF_8);
-        File root_file = new File(StoragePath + path);
-        Calendar now = Calendar.getInstance();
-        Calendar expireTime = Calendar.getInstance();
-
-        //如果目标路径是文件夹
-        if(root_file.isDirectory()) {
-            ArrayList<Map<String, String>> fileMaps = new ArrayList<>();
-            File[] originalFiles = root_file.listFiles();
-
-            //如果文件夹里的文件不为空
-            if (originalFiles != null) {
-                originalFiles = Arrays.stream(originalFiles).sorted(Comparator.comparing(File::getName)).toArray(File[]::new);
-                ArrayList<ShareFile> shareFiles = shareFileMapper.selectShareFilesByFilePath(root_file.getAbsolutePath());
-
-                //遍历文件，放入文件信息以及查询对应的分享码
-                for (File file : originalFiles) {
-                    Map<String, String> fileMap = new LinkedHashMap<>();
-                    fileMap.put("name", file.getName());
-                    fileMap.put("path", file.getAbsolutePath());
-
-                    if (file.isDirectory()) {
-                        fileMap.put("type", "FOLDER");
-                    } else if (file.isFile()) {
-                        fileMap.put("type", "FILE");                 //处理文件大小单位
-                        String fileSize = CustomUtil.fileSizeToString(file.length());
-                        fileMap.put("size", fileSize);
-
-                        Iterator<ShareFile> iterator = shareFiles.iterator();
-                        while(iterator.hasNext()){
-                            ShareFile shareFile = iterator.next();
-                            if(shareFile.getFilePath().equals(file.getAbsolutePath())){
-                                expireTime.setTime(shareFile.getExpireTime());
-                                if(now.after(expireTime)){
-                                    shareFileMapper.deleteShareFile(shareFile.getShareCode());
-                                }
-                                else {
-                                    fileMap.put("shareCode", shareFile.getShareCode());
-                                    fileMap.put("expireTime", dateTimeFormatter.format(shareFile.getExpireTime().toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime()));
-                                }
-                                iterator.remove();
-                                break;
-                            }
-                        }
-                    }
-                    fileMaps.add(fileMap);
-                }
-                response.success(new ObjectMapper().valueToTree(fileMaps).toString());
-            }
-            else
-                response.failure("文件夹为空");
-        }
-        return response.toJSONString();
-    }
-
-    /**
-     * 下载文件
-     * @param request       请求对象
-     * @param response      响应对象
-     * @param path          目标路径
-     */
-    public void download(HttpServletRequest request, HttpServletResponse response, String path){
-        path = URLDecoder.decode(path, StandardCharsets.UTF_8);
-        File file = new File(path);
-        if(file.exists())
-            FileDownload.export(request, response, path);
-
-        else
-            try{
-                response.getWriter().print("404 NOT FOUND");
-            }catch (IOException e){
-                log.warn("输出404失败", e);
-            }
-    }
-
-    /**
-     * 上传文件
-     * @param path          目标路径
-     * @param fileName      文件名称
-     * @param file          文件对象
-     * @return              上传结果
-     */
-    public String uploadFile(String path, String fileName, MultipartFile file) {
-        Response response = Response.generateResponse();
-        log.info("上传文件：{}, 目标路径:{}", fileName, path);
-
-        if(path == null || fileName == null || file == null){
-            response.failure("参数不完整");
-            return response.toJSONString();
-        }
-
-        File directory = new File(StoragePath + path);
-        if(directory.isDirectory()){
-            File targetFile = new File(StoragePath + path, fileName);
-
-            if(targetFile.exists())
-                response.failure("目标文件已存在");
-            else
-                try {
-                    file.transferTo(Path.of(StoragePath + path, fileName));
-                    response.success("上传成功");
-                } catch (IOException e) {
-                    response.failure("上传失败");
-                    log.error("上传失败: {}", fileName, e);
-                }
-        }
-        else
-            response.failure("该路径不存在或者不是文件夹");
-
-        return response.toJSONString();
-    }
-
-    /**
-     * 创建分享码
-     * @param path              目标路径
-     * @param expireHour        过期时间
-     * @return                  如果成功则是分享码以及过期时间，失败则是失败原因
-     */
-    public String shareFile(String path, Integer expireHour) {
-        Response response = Response.generateResponse();
-        path = URLDecoder.decode(path, StandardCharsets.UTF_8);
-        Map<String, String> jsonObject = new HashMap<>();
-        File file = new File(path);
-        if(file.isFile()){                    //如果是文件,则生成分享码，调用此接口时不需要考虑分享已分享文件以及分享已过期文件
-            String ShareCode;
-            ShareCode = RandomUtil.randomString(8);
-            Calendar expireTime = Calendar.getInstance();
-
-            expireTime.add(Calendar.HOUR, expireHour);
-            shareFileMapper.insertShareFile(ShareCode, path, expireTime.getTime());
-            jsonObject.put("shareCode", ShareCode);
-            jsonObject.put("expireTime", dateTimeFormatter.format(expireTime.getTime().toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime()));
-            response.success(new ObjectMapper().valueToTree(jsonObject).toString());
-        }
-        else
-            response.failure("此路径为文件夹或不存在");
-
-        return response.toJSONString();
-    }
-
-    /**
-     * 延长分享时间
-     * @param path              目标文件路径
-     * @param extendHour        延长小时数
-     * @return                  延长结果
-     */
-    public String extendShareTime(String path, Integer extendHour) {
-        Response response = Response.generateResponse();
-        path = URLDecoder.decode(path, StandardCharsets.UTF_8);
-        Map<String, String> data = new LinkedHashMap<>();
-        ShareFile shareFile = shareFileMapper.selectShareFileByFilePath(path);
-
-        if(shareFile != null){
-            Calendar calendar = Calendar.getInstance();
-            calendar.setTime(shareFile.getExpireTime());
-
-            calendar.add(Calendar.HOUR, extendHour);
-            shareFile.setExpireTime(calendar.getTime());
-            shareFileMapper.updateShareFile(shareFile);
-            data.put("expireTime", dateTimeFormatter.format(shareFile.getExpireTime().toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime()));
-            data.put("path", shareFile.getFilePath());
-
-            response.success(new ObjectMapper().valueToTree(data).toString());
-        }
-        else{
-            response.failure("该文件未被分享");
-        }
-
-        return response.toJSONString();
-    }
-
-    /**
-     * 取消分享
-     * @param path 目标路径
-     * @return 取消结果
-     */
-    public String cancelShare(String path) {
-        Response response = Response.generateResponse();
-        path = URLDecoder.decode(path, StandardCharsets.UTF_8);
-        ShareFile shareFile = shareFileMapper.selectShareFileByFilePath(path);
-
-        if(shareFile != null){
-            shareFileMapper.deleteShareFile(shareFile.getShareCode());
-            response.success("取消分享成功");
-        }
-        else{
-            response.failure("该文件未被分享");
-        }
-
-        return response.toJSONString();
-    }
-
     /**
      * 获取订阅文件上次更新时间
      * @return 订阅文件上次更新时间
@@ -281,75 +46,7 @@ public class PersonalService{
 
         jsonObject.put("ip", ip);
         jsonObject.put("lastUpdateTime", updateTime);
-        response.success(new ObjectMapper().valueToTree(jsonObject).toString().replace("\"", " ").replace("\\", " "));
+        response.success(objectMapper.valueToTree(jsonObject).toString().replace("\"", " ").replace("\\", " "));
-
-        return response.toJSONString();
-    }
-
-    /**
-     * 打包文件
-     * @param path 目标路径
-     * @return  响应提交成功，因为该方法为异步执行，未完成时后辍为undone
-     */
-    public String compress(String path) {
-        Response response = Response.generateResponse();
-        path = URLDecoder.decode(path, StandardCharsets.UTF_8);
-        File file = new File(path);
-        String finalPath = path;
-
-        if(!file.isDirectory() || !file.exists()){
-            response.failure("选中的路径不是文件夹");
-            return response.toJSONString();
-        }
-
-        compressThreadPool.submit(() -> {
-            try(OutputStream bos = new BufferedOutputStream(Files.newOutputStream(Paths.get(finalPath + ".tar***undone")));
-                TarArchiveOutputStream aos = new TarArchiveOutputStream(bos)) {
-                aos.setLongFileMode(TarArchiveOutputStream.LONGFILE_GNU);   //解除文件名长度限制
-                Path dirPath = Paths.get(finalPath);
-                Files.walkFileTree(dirPath, new SimpleFileVisitor<>() {
-                    @Override
-                    public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
-                        TarArchiveEntry entry = new TarArchiveEntry(dir.toFile(), dirPath.relativize(dir).toString());
-                        aos.putArchiveEntry(entry);
-                        aos.closeArchiveEntry();
-                        return super.preVisitDirectory(dir, attrs);
-                    }
-
-                    @Override
-                    public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
-                        TarArchiveEntry entry = new TarArchiveEntry(file.toFile(), dirPath.relativize(file).toString());
-                        aos.putArchiveEntry(entry);
-                        IOUtils.copy(Files.newInputStream(file.toFile().toPath()), aos);
-                        aos.closeArchiveEntry();
-                        return super.visitFile(file, attrs);
-                    }
-                });
-                File targetFile = new File(finalPath + ".tar***undone");
-                log.info("打包成功，重命名:" + targetFile.renameTo(new File(finalPath + ".tar")));
-            }catch (IOException e){
-                log.error("打包失败", e);
-                log.info("打包失败，删除文件结果:" + new File(finalPath + ".tar***undone").delete());
-            }
-        });
-        response.success("加入队列成功");
-        return response.toJSONString();
-    }
-
-    /**
-     * 删除文件
-     * @param path  目标路径
-     * @return      删除结果
-     */
-    public String deleteFile(String path) {
-        Response response = Response.generateResponse();
-        path = URLDecoder.decode(path, StandardCharsets.UTF_8);
-        File file = new File(path);
-
-        if(FileUtil.del(file))
-            response.success("删除成功");
-        else
-            response.failure("删除失败");
 
         return response.toJSONString();
     }

src/main/java/com/lion/lionwebsite/Service/PublicService.java

@@ -2,35 +2,23 @@ package com.lion.lionwebsite.Service;
 
 import com.lion.lionwebsite.Dao.normal.CustomConfigurationMapper;
 
-import com.lion.lionwebsite.Dao.normal.ShareFileMapper;
 import com.lion.lionwebsite.Dao.normal.UserMapper;
 import com.lion.lionwebsite.Domain.CustomConfiguration;
-import com.lion.lionwebsite.Domain.ShareFile;
 import com.lion.lionwebsite.Domain.User;
 import com.lion.lionwebsite.Interceptor.TaskHandlerInterceptor;
 import com.lion.lionwebsite.Util.CustomUtil;
-import com.lion.lionwebsite.Util.FileDownload;
 import com.lion.lionwebsite.Util.Response;
 
 import jakarta.servlet.http.HttpServletRequest;
-import jakarta.servlet.http.HttpServletResponse;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 
-
-import java.io.File;
-import java.io.IOException;
-import java.nio.charset.StandardCharsets;
-import java.util.Calendar;
-
 @Service
 @RequiredArgsConstructor
 public class PublicService {
 
     final CustomConfigurationMapper configurationMapper;
 
-    final ShareFileMapper shareFileMapper;
-
     final UserMapper userMapper;
 
     final TaskHandlerInterceptor taskHandlerInterceptor;
@@ -44,41 +32,6 @@ public class PublicService {
         configurationMapper.updateConfiguration(CustomConfiguration.LAST_UPDATE_IP_ADDRESS_TIME, CustomUtil.now());
     }
 
-    /**
-     * 通过分享码获取文件
-     * @param httpRequest   请求对象
-     * @param httpResponse  响应对象
-     * @param ShareCode     分享码
-     * @throws IOException  响应时的异常
-     */
-    public boolean GetFile(HttpServletRequest httpRequest, HttpServletResponse httpResponse, String ShareCode) throws IOException {
-        Response response = Response.generateResponse();
-
-        //参数为空的情况
-        if(ShareCode == null) {
-            response.failure("ShareCode invalid");
-        } else {
-            ShareFile shareFile = shareFileMapper.selectShareFileByShareCode(ShareCode);
-            Calendar ExpireTime = Calendar.getInstance();
-            Calendar now = Calendar.getInstance();
-
-            if (shareFile != null) {
-                ExpireTime.setTime(shareFile.getExpireTime());
-                if (ExpireTime.after(now) && new File(shareFile.getFilePath()).isFile()) {
-                    FileDownload.export(httpRequest, httpResponse, shareFile.getFilePath());
-                    return true;
-                } else {
-                    shareFileMapper.deleteShareFile(shareFile.getShareCode());
-                    response.failure("ShareCode is expired or File is not exist");
-                }
-            } else
-                response.failure("ShareCode is not exist or expired");
-        }
-
-        httpResponse.getOutputStream().write(response.toJSONString().getBytes(StandardCharsets.UTF_8));
-        return false;
-    }
-
     /**
      * 修改授权码，如果能够执行此方法，则授权码一定存在
      * @param AuthCode          原来的授权码

src/main/java/com/lion/lionwebsite/Service/PushService.java

@@ -8,6 +8,10 @@ import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 
+import java.time.Instant;
+import java.time.ZoneId;
+import java.time.format.DateTimeFormatter;
+
 @Service
 @Slf4j
 @RequiredArgsConstructor
@@ -15,17 +19,21 @@ public class PushService {
 
     long self = 686839482;
 
+    private static final DateTimeFormatter COMPLETION_TIME_FORMATTER =
+            DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss").withZone(ZoneId.of("Asia/Shanghai"));
+
     final TelegramBot bot;
 
-    public void taskCreateReport(String username, String link, Response response){
+    public void taskCreateReport(String username, String taskName, Response response){
         if(response.isSuccess())
-            sendToMe(String.format("用户%s提交下载%s", username, link));
+            sendToMe(String.format("用户%s提交下载任务：%s", username, taskName));
         else
-            sendToMe(String.format("用户%s提交下载%s , 下载失败:%s", username, link, response.get("data")));
+            sendToMe(String.format("用户%s提交下载任务：%s，下载失败：%s", username, taskName, response.get("data")));
     }
 
     public void downloadComplete(Gallery gallery){
-        sendToMe(gallery.getLink() + " 下载完成");
+        String completionTime = COMPLETION_TIME_FORMATTER.format(Instant.now());
+        sendToMe(String.format("任务下载完成：%s\n完成时间：%s", gallery.getName(), completionTime));
     }
 
     public void storageNodeOnline(){

src/main/java/com/lion/lionwebsite/Service/QueryService.java

@@ -3,8 +3,9 @@ package com.lion.lionwebsite.Service;
 import com.lion.lionwebsite.Domain.GalleryForQuery;
 import com.lion.lionwebsite.Util.FileDownload;
 import com.lion.lionwebsite.Util.GalleryUtil;
+import com.lion.lionwebsite.Util.ImageFileCache;
+import java.nio.file.Path;
 import com.lion.lionwebsite.Util.Response;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import jakarta.servlet.ServletOutputStream;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
@@ -18,9 +19,12 @@ import org.springframework.stereotype.Service;
 import java.io.*;
 import java.net.URI;
 import java.net.URISyntaxException;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
 import java.util.*;
 
 import static com.lion.lionwebsite.Util.CustomUtil.fourZeroFour;
+import static com.lion.lionwebsite.Util.CustomUtil.objectMapper;
 
 @Service
 @Slf4j
@@ -31,12 +35,15 @@ public class QueryService {
     public String query(String keyword, String prev, String next) {
         Response response = Response.generateResponse();
         String result;
-        String param = "?f_search=" + keyword.replace(" ", "+") + "&f_sft=on&f_sfu=on&f_sfl=on";
+        // 关键词来自用户输入，必须编码后再拼进查询串：未编码的 &、#、中文、空格
+        // 会被上游当成额外的查询参数或截断，搜索行为不可预期。
+        String param = "?f_search=" + URLEncoder.encode(keyword == null ? "" : keyword, StandardCharsets.UTF_8)
+                + "&f_sft=on&f_sfu=on&f_sfl=on";
 
         if(prev != null)
-            param += "&prev=" + prev;
+            param += "&prev=" + URLEncoder.encode(prev, StandardCharsets.UTF_8);
         else if(next != null)
-            param += "&next=" + next;
+            param += "&next=" + URLEncoder.encode(next, StandardCharsets.UTF_8);
 
         try{
             result = GalleryUtil.requests("https://exhentai.org/" + param, "get", null, null);
@@ -47,35 +54,16 @@ public class QueryService {
         }
 
         Document parse = Jsoup.parse(result);
-        Elements elements = parse.select("body > div.ido > div:nth-child(2) > table > tbody > tr");
+        java.util.List<GalleryForQuery> galleries;
-
-        ArrayList<GalleryForQuery> galleries = new ArrayList<>();
-        ListIterator<Element> elementListIterator = elements.listIterator();
         try {
-            elementListIterator.next();                                             //skip firstlink
+            galleries = com.lion.lionwebsite.Util.GallerySearchParser.parse(parse);
-        }catch (NullPointerException | NoSuchElementException e){
+        } catch (IOException | RuntimeException error) {
-            response.failure("没有搜索到结果");
+            log.warn("上游搜索页面格式不支持: {}", error.getClass().getSimpleName());
-            return response.toJSONString();
+            return response.failure("上游搜索页面格式不支持").toJSONString();
         }
+        if (galleries.isEmpty()) return response.failure("没有搜索到结果").toJSONString();
 
-        while (elementListIterator.hasNext()){
+        response.success(objectMapper.valueToTree(galleries));
-            Element element = elementListIterator.next();
-            GalleryForQuery gallery = new GalleryForQuery();
-            gallery.setType(element.child(0).text());                                                      //type
-            String src = element.child(1).select("img").attr("src");
-            if (src.startsWith("data"))
-                src = element.child(1).select("img").attr("data-src");
-            src = src.replace("https://s.exhentai.org", "");
-            gallery.setThumbnailUrl(src);                                 //thumbnailSrc
-            gallery.setUploadTime(element.child(1).select("div > div [onclick]").get(1).text());          //uploadTime
-            gallery.setLink(element.child(2).child(0).attr("href"));                         //link
-            gallery.setGid(GalleryUtil.parseGid(gallery.getLink()) + "");                                           //gid
-            gallery.setName(element.child(2).child(0).child(0).text());                           //name
-            gallery.setPage(Integer.parseInt(element.child(3).child(1).text().split(" ")[0]));   //page
-            galleries.add(gallery);
-        }
-
-        response.success(new ObjectMapper().valueToTree(galleries).toString());
         Elements nextLink = parse.select("#unext");
         if(nextLink.hasAttr("href"))
             response.set("next", nextLink.attr("href"));
@@ -103,22 +91,16 @@ public class QueryService {
         String fileName = path.substring(path.lastIndexOf("/") + 1);
         String suffix = fileName.substring(fileName.lastIndexOf("."));
         fileName = fileName.substring(0, fileName.lastIndexOf("."));
-        File image = new File(CachePath, fileName + ".avif");
+        String sourceUrl = "https://ehgt.org/" + path;
-
+        try {
-        if(image.isFile()){
+            Path image = ImageFileCache.get(Path.of(CachePath), fileName, () -> sourceUrl);
-            FileDownload.export(request, response, image.getAbsolutePath());
+            FileDownload.export(request, response, image.toString());
-            return;
+        } catch (InterruptedException e) {
-        }
+            Thread.currentThread().interrupt();
-
+            response.setStatus(503);
-        path = "https://ehgt.org/" + path;
+        } catch (Exception e) {
-        try(ServletOutputStream outputStream = response.getOutputStream()){
+            log.warn("获取缩略图失败: errorType={}", e.getClass().getSimpleName());
-            new URI(path).toURL().openConnection().getInputStream().transferTo(new FileOutputStream(CachePath + fileName + suffix));
+            if (!response.isCommitted()) response.setStatus(404);
-            GalleryUtil.convertImg(CachePath + fileName + suffix, suffix);
-            FileInputStream inputStream = new FileInputStream(image.getAbsoluteFile());    //如果放到括号里，会导致图片未创建时创建文件流失败报错
-            outputStream.write(inputStream.readAllBytes());
-            inputStream.close();
-        }catch (IOException | URISyntaxException e){
-            log.error("获取缩略图失败", e);
         }
     }
 }

src/main/java/com/lion/lionwebsite/Service/RemoteService.java

@@ -12,6 +12,7 @@ import io.netty.channel.nio.NioEventLoopGroup;
 import io.netty.channel.socket.nio.NioSocketChannel;
 import io.netty.handler.codec.LengthFieldBasedFrameDecoder;
 import io.netty.handler.logging.LoggingHandler;
+import io.netty.handler.logging.ByteBufFormat;
 import io.netty.util.concurrent.DefaultPromise;
 import io.netty.util.concurrent.Promise;
 import lombok.Data;
@@ -20,25 +21,32 @@ import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Service;
 
 import jakarta.annotation.PostConstruct;
+import jakarta.annotation.PreDestroy;
 
 import java.io.IOException;
 import java.io.OutputStream;
 import java.net.*;
 import java.util.Arrays;
-import java.util.HashMap;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.CopyOnWriteArrayList;
+import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.List;
 
 @Service
 @Data
 @Slf4j
 public class RemoteService {
 
-    ChannelFuture channelFuture;
+    volatile ChannelFuture channelFuture;
 
-    Channel channel;
+    volatile Channel channel;
 
     @Value("${remote.ip:5.255.110.45}")
     String ip;
@@ -49,11 +57,17 @@ public class RemoteService {
 
     final PushService pushService;
 
-    HashMap<Integer, Promise<AbstractMessage>> promiseHashMap = new HashMap<>();
+    ConcurrentHashMap<Integer, Promise<AbstractMessage>> promiseHashMap = new ConcurrentHashMap<>();
 
-    EventLoop eventLoopGroup = new DefaultEventLoop();
+    ConcurrentHashMap<Integer, CopyOnWriteArrayList<CompletableFuture<String>>> retryStatusWaiters =
+            new ConcurrentHashMap<>();
 
-    ExecutorService downloadThread = Executors.newCachedThreadPool();
+    final EventLoop eventLoopGroup = new DefaultEventLoop();
+    final EventLoopGroup networkGroup = new NioEventLoopGroup(2);
+    final AtomicBoolean connecting = new AtomicBoolean();
+    final AtomicBoolean monitoring = new AtomicBoolean();
+    volatile boolean stopping;
+    volatile ServerSocket monitorSocket;
 
     Thread monitor;
 
@@ -61,35 +75,212 @@ public class RemoteService {
 
     final WebSocketService webSocketService;
 
-    @PostConstruct
+    final SubscriptionStandbySnapshotService subscriptionStandbySnapshotService;
-    void init() {
+
-        if(!initChannel()){     //如果远程服务器连接失败，则开启本地监听
+    /**
-            monitor = new Thread(this::monitorFunc);
+     * 协议 v2 上报处理器。用 setter 注入而不是构造参数，避免 RemoteService 与
-            monitor.start();
+     * GalleryTaskLifecycleService 之间的依赖环（后者需要 RemoteService 下发命令）。
+     */
+    volatile TaskReportHandler taskReportHandler;
+
+    /**
+     * gid → 当前有效的下载 operationId。由生命周期服务在装配期注册（保持依赖方向单向）。
+     * 未注册或返回 null 时，重投/重试退化为旧的无 operationId 命令。
+     */
+    volatile java.util.function.IntFunction<String> downloadOperationIdResolver;
+
+    /**
+     * gid → 下发判定（是否允许下发 + 用哪个稳定 operationId）。
+     *
+     * <p>替代「能解析出 operationId 就下发」的旧语义：UNKNOWN / 预占中 / 待删除的任务
+     * 必须被明确拒绝，否则未计量的人工对账任务可能在节点侧变成「下载完成却 0 额度」。
+     */
+    volatile java.util.function.IntFunction<GalleryTaskLifecycleService.DispatchDecision> dispatchResolver;
+
+    /**
+     * 生命周期装配是否已经完成（handler/resolver 已绑定 + 启动恢复已执行）。
+     *
+     * <p>在它为 true 之前，绝不自动重投未完成任务：启动早期还不知道哪些任务是
+     * SUBMITTED、哪些是 UNKNOWN，盲目下发会制造未计量副作用。
+     */
+    volatile boolean lifecycleReady;
+
+    /**
+     * 启动恢复是否安全完成。恢复失败时拒绝自动重投，避免在状态不明的库上继续派发。
+     */
+    volatile boolean recoverySafe;
+
+    /**
+     * 节点是否声明了 v2 可靠任务能力。只有协商成功之后才发送类型 11..13，
+     * 否则继续走旧的无确认上报，保持向后兼容。
+     */
+    volatile boolean v2Negotiated;
+
+    /** 本次连接的 Hello 协商结果；收到节点 Hello（或超时）后完成。 */
+    volatile CompletableFuture<Boolean> helloNegotiation;
+
+    /** 明确「未下发」的结果码：与 -1（发送失败/超时）区分开。 */
+    public static final byte REFUSED = -3;
+
+    /** 事务提交之后的通知/推送执行器：外部延迟（Telegram、慢浏览器）不得阻塞状态提交。 */
+    final ExecutorService notificationExecutor = Executors.newSingleThreadExecutor(r -> {
+        Thread thread = new Thread(r, "gallery-notify");
+        thread.setDaemon(true);
+        return thread;
+    });
+
+    /**
+     * 协议握手的专用线程。hello 等待响应是阻塞调用，绝不能放在 Netty 事件循环上，
+     * 否则响应本身要由同一个事件循环投递，会直接死锁。
+     */
+    final ExecutorService handshakeExecutor = Executors.newSingleThreadExecutor(r -> {
+        Thread thread = new Thread(r, "node-protocol-handshake");
+        thread.setDaemon(true);
+        return thread;
+    });
+
+    final ExecutorService subscriptionSyncExecutor = Executors.newSingleThreadExecutor(r -> {
+        Thread thread = new Thread(r, "subscription-standby-sync");
+        thread.setDaemon(true);
+        return thread;
+    });
+
+    /** 测试/装配用：绑定上报处理器。 */
+    public void setTaskReportHandler(TaskReportHandler taskReportHandler) {
+        this.taskReportHandler = taskReportHandler;
+    }
+
+    public void setDownloadOperationIdResolver(java.util.function.IntFunction<String> resolver) {
+        this.downloadOperationIdResolver = resolver;
+    }
+
+    public void setDispatchResolver(java.util.function.IntFunction<GalleryTaskLifecycleService.DispatchDecision> resolver) {
+        this.dispatchResolver = resolver;
+    }
+
+    /**
+     * 由装配层在「绑定 handler/resolver + 完成启动恢复」之后调用：标记可以安全派发并建立连接。
+     *
+     * <p>初始连接不再放在 {@code @PostConstruct}：那时 handler/resolver 都还没绑定，
+     * 连接成功会把尚未确认的 UNKNOWN/预占任务当作普通任务重投。
+     *
+     * @param recoverySafe 启动恢复是否成功；false 时只允许连接，不允许自动重投
+     */
+    public void startAfterWiring(boolean recoverySafe) {
+        this.recoverySafe = recoverySafe;
+        this.lifecycleReady = true;
+        initChannel();
+    }
+
+    /** 把 gid 解析成下发判定；未注册解析器或解析失败时按「拒绝下发」处理。 */
+    private GalleryTaskLifecycleService.DispatchDecision resolveDispatchDecision(int gid) {
+        java.util.function.IntFunction<GalleryTaskLifecycleService.DispatchDecision> resolver = dispatchResolver;
+        if (resolver == null)
+            return null;
+        try {
+            return resolver.apply(gid);
+        } catch (Exception e) {
+            log.warn("解析任务下发判定失败 gid={}", gid, e);
+            return null;
         }
     }
 
-    public boolean initChannel(){
+    private String resolveDownloadOperationId(int gid) {
+        java.util.function.IntFunction<String> resolver = downloadOperationIdResolver;
+        if (resolver == null)
+            return null;
         try {
+            return resolver.apply(gid);
+        } catch (Exception e) {
+            log.warn("解析任务 operationId 失败 gid={}", gid, e);
+            return null;
+        }
+    }
+
+    /** 节点是否已完成 v2 能力协商（供健康检查/测试观察）。 */
+    public boolean isReliableProtocolReady() {
+        return v2Negotiated;
+    }
+
+    /**
+     * 处理节点上报的任务状态。原先这些 JDBC 读写直接跑在 Netty 的 IO 线程上，
+     * N 条上报会阻塞该 IO 线程，连带拖慢心跳与请求响应；改为单线程顺序执行，
+     * 既不打乱「按上报顺序覆盖状态」的语义，也避免并发写库。
+     */
+    ExecutorService statusApplyExecutor = newStatusApplyExecutor();
+
+    private static ExecutorService newStatusApplyExecutor() {
+        return Executors.newSingleThreadExecutor(r -> {
+            Thread thread = new Thread(r, "gallery-status-apply");
+            thread.setDaemon(true);
+            return thread;
+        });
+    }
+
+    /**
+     * 测试钩子：等待已提交的状态处理任务全部执行完毕。
+     *
+     * <p>单线程执行器天然有序，投递一个空任务并等它跑完，即说明此前提交的
+     * 任务都已处理完，从而让「上报后落库」的断言保持确定性。
+     */
+    void awaitStatusApplied() {
+        try {
+            statusApplyExecutor.submit(() -> { }).get(5, TimeUnit.SECONDS);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+        } catch (Exception e) {
+            log.debug("等待状态处理完成失败", e);
+        }
+    }
+
+    final AtomicBoolean subscriptionSyncQueued = new AtomicBoolean();
+
+    final AtomicBoolean subscriptionSyncRunning = new AtomicBoolean();
+
+    @Value("${subscription.standby.sync-enabled:false}")
+    boolean subscriptionSyncEnabled;
+
+    /**
+     * 这里刻意不再自动连接。
+     *
+     * <p>原实现在 PostConstruct 里立即 initChannel()，而那一刻 TaskLifecycleWiring
+     * 还没绑定上报处理器、operationId 解析器，也没执行启动恢复：连接成功后会马上把
+     * 未完成任务（含 UNKNOWN/预占）当作普通任务重投给节点。
+     * 现在改为由装配层在完成绑定与恢复后调用 startAfterWiring(boolean)。
+     */
+
+    public boolean initChannel(){
+        if (stopping || !connecting.compareAndSet(false, true))
+            return !isDead();
+        try {
+            if (!isDead())
+                return true;
             int i;
             for(i=0; i<20; i++) {
                 try {
                     channelFuture = new Bootstrap()
                             .channel(NioSocketChannel.class)
-                            .group(new NioEventLoopGroup())
+                            .group(networkGroup)
+                            .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 3_000)
                             .handler(new ChannelInitializer<NioSocketChannel>() {
                                 @Override
                                 protected void initChannel(NioSocketChannel channel) {
                                     channel.pipeline().addLast(new LengthFieldBasedFrameDecoder(100000000, 1, 4));
                                     channel.pipeline().addLast(new MessageCodec());
-                                    channel.pipeline().addLast(new LoggingHandler());
+                                    // 只记录事件和字节数，避免把订阅正文、签名等消息内容写入日志。
+                                    channel.pipeline().addLast(new LoggingHandler(io.netty.handler.logging.LogLevel.DEBUG, ByteBufFormat.SIMPLE));
                                     channel.pipeline().addLast(new MyChannelInboundHandlerAdapter());
                                 }
                             }).connect(new InetSocketAddress(ip, port + i)).sync();
                     break;
-                }catch (Exception e){
+                } catch (InterruptedException e) {
+                    Thread.currentThread().interrupt();
+                    return false;
+                } catch (Exception e) {
                     log.error("连接storageNode失败，端口偏移量(重试次数):{}", i);
                 }
+                if (stopping)
+                    return false;
             }
 
             //超过二十次连不上，主动抛出错误，由下方catch
@@ -97,19 +288,51 @@ public class RemoteService {
                 throw new Exception();
             }
 
+            if (stopping) {
+                channelFuture.channel().close();
+                return false;
+            }
             log.info("connect success");
             if(pushService != null)
                 pushService.storageNodeOnline();
 
             channel = channelFuture.channel();
+            closeMonitorSocket();
             channel.writeAndFlush(new IdentityMessage("lionwebsite"));
-
+            // 协议 v2：先发旧的 Identity，再发 hello 做能力协商。
-            //子节点上线时，发送未完成的任务
+            // 协商完成之前不允许下发任何任务，也不允许自动重投未完成任务。
-            resetUndone();
+            CompletableFuture<Boolean> negotiation = queueHelloHandshake();
+            // 在协商线程上等待结果，再决定重投；绝不阻塞 Netty 事件循环。
+            handshakeExecutor.execute(() -> {
+                boolean reliable = awaitNegotiation(negotiation);
+                // 订阅快照与任务重投都要求生命周期装配已完成；装配前只保持连接。
+                requestSubscriptionSync();
+                if (!reliable) {
+                    log.info("节点未确认 v2 能力，跳过自动重投未完成任务");
+                    return;
+                }
+                if (!lifecycleReady) {
+                    log.info("生命周期装配未就绪，跳过自动重投未完成任务");
+                    return;
+                }
+                if (!recoverySafe) {
+                    log.error("启动恢复未安全完成，拒绝自动重投未完成任务");
+                    return;
+                }
+                try {
+                    resetUndone();
+                } catch (RuntimeException e) {
+                    log.warn("重投未完成任务失败", e);
+                }
+            });
             return true;
         }catch (Exception e){
             log.error("connect node failed, wait for node back online", e);
             return false;
+        } finally {
+            connecting.set(false);
+            if (isDead())
+                startMonitor();
         }
     }
 
@@ -119,7 +342,7 @@ public class RemoteService {
             return -2;
         }
 
-        channelFuture.channel().close();
+        channelFuture.channel().close().awaitUninterruptibly();
 
         if(initChannel()){
             return 0;
@@ -129,32 +352,120 @@ public class RemoteService {
     }
 
     public byte checkAvailability(){
-        AvailableCheckMessage acm = new AvailableCheckMessage();
+        return sendRequest(new AvailableCheckMessage(), 10, TimeUnit.SECONDS);
-        acm.setMessageId(atomicInteger.getAndIncrement());
+    }
 
-        channel.writeAndFlush(acm);
+    byte sendRequest(AbstractMessage message, long timeout, TimeUnit unit) {
+        Channel target = channel;
+        if (stopping || target == null || !target.isActive())
+            return -1;
+        message.setMessageId(atomicInteger.getAndIncrement());
         DefaultPromise<AbstractMessage> promise = new DefaultPromise<>(eventLoopGroup);
-        promiseHashMap.put(acm.messageId, promise);
+        promiseHashMap.put(message.messageId, promise);
         try {
-            boolean result = promise.await(10, TimeUnit.SECONDS);
+            target.writeAndFlush(message).addListener(future -> {
-            if(result){
+                if (!future.isSuccess())
-                ResponseMessage rsm = (ResponseMessage)promise.getNow();
+                    promise.tryFailure(future.cause() == null ? new IOException("节点发送失败") : future.cause());
-                return rsm.getResult();
+            });
-            }
+            if (promise.await(timeout, unit) && promise.isSuccess()
-            else return -1;
+                    && promise.getNow() instanceof ResponseMessage response)
-        }catch (InterruptedException e){
+                return response.getResult();
-            log.warn("checkAvailability interrupted", e);
+            return -1;
+        } catch (InterruptedException e) {
             Thread.currentThread().interrupt();
             return -1;
+        } catch (Exception e) {
+            log.warn("节点请求失败: messageId={}", message.messageId, e);
+            return -1;
+        } finally {
+            promiseHashMap.remove(message.messageId, promise);
         }
     }
 
+    /** 请求将当前全部订阅状态异步同步到存储节点，短时间内的多次请求会合并。 */
+    public void requestSubscriptionSync() {
+        if (stopping || !subscriptionSyncEnabled)
+            return;
+        subscriptionSyncQueued.set(true);
+        if (!subscriptionSyncRunning.compareAndSet(false, true))
+            return;
+        try {
+            subscriptionSyncExecutor.execute(this::drainSubscriptionSyncQueue);
+        } catch (java.util.concurrent.RejectedExecutionException e) {
+            subscriptionSyncRunning.set(false);
+            if (!stopping) throw e;
+        }
+    }
+
+    // 这里刻意没有「定期重发整份快照」的定时任务：
+    // 快照只在订阅内容变化时推送（各处 requestSubscriptionSync），节点上线时补推一次。
+    // 备机的过期语义是「主站失联」，由节点按「收到主站的任何消息」判定新鲜度——
+    // 主站每 30 分钟的可用性检查即可持续刷新它，因此不需要为续期而周期性传输快照。
+
+    private void drainSubscriptionSyncQueue() {
+        try {
+            while (subscriptionSyncQueued.getAndSet(false)) {
+                if (isDead())
+                    continue;
+                syncSubscriptionSnapshotOnce();
+            }
+        } finally {
+            subscriptionSyncRunning.set(false);
+            if (subscriptionSyncQueued.get())
+                requestSubscriptionSync();
+        }
+    }
+
+    private void syncSubscriptionSnapshotOnce() {
+        try {
+            SubscriptionSnapshotMessage message = subscriptionStandbySnapshotService.build();
+            byte result = sendRequest(message, 30, TimeUnit.SECONDS);
+            if (result == 0 || result == 3)
+                log.info("订阅快照同步完成 revision={} result={}", shortRevision(message.getRevision()), result);
+            else
+                log.warn("订阅快照同步失败或超时 revision={} result={}", shortRevision(message.getRevision()), result);
+        } catch (Exception e) {
+            log.warn("生成或发送订阅快照失败: {}", e.getMessage());
+        }
+    }
+
+    private static String shortRevision(String revision) {
+        return revision == null ? null : revision.substring(0, Math.min(12, revision.length()));
+    }
+
+    @PreDestroy
+    void shutdownResources() {
+        stopping = true;
+        closeMonitorSocket();
+        if (monitor != null) monitor.interrupt();
+        failPendingRequests();
+        if (channel != null) channel.close();
+        statusApplyExecutor.shutdownNow();
+        notificationExecutor.shutdownNow();
+        handshakeExecutor.shutdownNow();
+        subscriptionSyncExecutor.shutdownNow();
+        networkGroup.shutdownGracefully();
+        eventLoopGroup.shutdownGracefully();
+    }
+
+    private void failPendingRequests() {
+        promiseHashMap.forEach((id, promise) -> promise.tryFailure(new IOException("节点连接已关闭")));
+        promiseHashMap.clear();
+        retryStatusWaiters.forEach((gid, waiters) ->
+                waiters.forEach(waiter -> waiter.completeExceptionally(new IOException("节点连接已关闭"))));
+        retryStatusWaiters.clear();
+    }
+
     public boolean isDead(){
-        return channelFuture.channel() == null || !channelFuture.channel().isActive();
+        return channelFuture == null || channelFuture.channel() == null || !channelFuture.channel().isActive();
     }
 
     public void resetUndone(){
-        if (channelFuture.channel() == null || !channelFuture.channel().isActive())
+        // 只有「连接在线 + v2 已协商 + 生命周期装配完成 + 启动恢复安全完成」才允许批量重投；
+        // 任何一项不满足都说明还不知道任务真实状态，盲目下发会制造未计量副作用。
+        if (channelFuture == null || channelFuture.channel() == null || !channelFuture.channel().isActive())
+            return;
+        if (!v2Negotiated || !lifecycleReady || !recoverySafe)
             return;
 
         Gallery[] galleries = galleryMapper.selectUnDoneGalleries();
@@ -167,75 +478,244 @@ public class RemoteService {
     }
 
     public byte addGalleryToQueue(Gallery gallery){
+        GalleryTaskLifecycleService.DispatchDecision decision = resolveDispatchDecision(gallery.getGid());
+        if (decision != null) {
+            // 明确拒绝（UNKNOWN/预占/待删除等）：绝不能退化为无 operationId 的旧命令。
+            if (!decision.dispatchable())
+                return REFUSED;
+            return sendTaskCommand(TaskCommandMessage.ACTION_DOWNLOAD, decision.operationId(),
+                    gallery.getGid(), gallery.getName());
+        }
+        // 兼容：装配层未注册判定解析器时（如单元测试），退回只按 operationId 解析的旧行为。
+        String operationId = resolveDownloadOperationId(gallery.getGid());
+        if (operationId != null)
+            return sendTaskCommand(TaskCommandMessage.ACTION_DOWNLOAD, operationId, gallery.getGid(), gallery.getName());
+        return legacyDownloadCommand(gallery.getGid(), gallery.getName());
+    }
+
+    /** 旧的无 operationId 下载命令，供未启用 v2 或无法解析 operationId 时退避使用。 */
+    private byte legacyDownloadCommand(int gid, String name) {
         GalleryTask galleryTask = new GalleryTask();
-        galleryTask.setGid(gallery.getGid());
+        galleryTask.setGid(gid);
-        galleryTask.setName(gallery.getName());
+        galleryTask.setName(name);
+        DownloadPostMessage message = new DownloadPostMessage();
+        message.setGalleryTask(galleryTask);
+        return sendRequest(message, 10, TimeUnit.SECONDS);
+    }
 
-        DownloadPostMessage dpm = new DownloadPostMessage();
+    /**
-        dpm.messageId = atomicInteger.getAndIncrement();
+     * 在专用线程上执行 hello 协商，并返回一个在「收到节点 Hello」或「等待超时」后完成的 future。
-        dpm.setGalleryTask(galleryTask);
+     *
-        channel.writeAndFlush(dpm);
+     * <p>节点的应答是 Hello 而不是 ResponseMessage，因此绝不能走 sendRequest 的响应等待器
-
+     * （那会白等 10 秒超时，排在后面的自动重投也只能 10 秒后才开始）。
-        DefaultPromise<AbstractMessage> promise = new DefaultPromise<>(eventLoopGroup);
+     * 这里直接 writeAndFlush，并让 channelRead 的 Hello 分支完成 future；
-        promiseHashMap.put(dpm.messageId, promise);
+     * 超时用 completeOnTimeout 处理，写失败立刻完成。
+     */
+    private CompletableFuture<Boolean> queueHelloHandshake() {
+        // 10 秒内没等到节点 Hello 就按「未协商」完成，避免后续重投被无限期挂起。
+        CompletableFuture<Boolean> result = new CompletableFuture<Boolean>()
+                .completeOnTimeout(false, 10, TimeUnit.SECONDS);
+        helloNegotiation = result;
+        if (stopping) {
+            result.complete(false);
+            return result;
+        }
         try {
-            boolean result = promise.await(10, TimeUnit.SECONDS);
+            handshakeExecutor.execute(() -> {
-            if(result){
+                v2Negotiated = false;
-                ResponseMessage rsm = (ResponseMessage)promise.getNow();
+                try {
-                return rsm.getResult();
+                    Channel target = channel;
-            }
+                    if (target == null || !target.isActive()) {
-            else return -1;
+                        result.complete(false);
-        }catch (InterruptedException e){
+                        return;
-            log.warn("addGalleryToQueue interrupted", e);
+                    }
+                    // Hello 不写入 promiseHashMap：节点回的是 Hello，没有 ResponseMessage 等待者。
+                    target.writeAndFlush(new ProtocolHelloMessage()).addListener(future -> {
+                        if (!future.isSuccess()) {
+                            if (!stopping)
+                                log.warn("协议协商发送失败: {}", future.cause() == null
+                                        ? "unknown" : future.cause().getClass().getSimpleName());
+                            result.complete(false);
+                        }
+                    });
+                } catch (RuntimeException e) {
+                    log.warn("协议协商失败", e);
+                    result.complete(false);
+                }
+            });
+        } catch (java.util.concurrent.RejectedExecutionException e) {
+            if (!stopping) log.warn("安排协议协商失败", e);
+            result.complete(false);
+        }
+        return result;
+    }
+
+    /** 等待协商结果；超时或中断都按「未协商」处理（宁可不下发，也不盲目重投）。 */
+    boolean awaitNegotiation(CompletableFuture<Boolean> negotiation) {
+        if (negotiation == null)
+            return v2Negotiated;
+        try {
+            // future 自身已在 10 秒时按「未协商」完成，这里留少量余量即可。
+            return negotiation.get(12, TimeUnit.SECONDS);
+        } catch (InterruptedException e) {
             Thread.currentThread().interrupt();
-            return -1;
+            return false;
+        } catch (Exception e) {
+            return false;
         }
     }
 
-    public byte deleteGallery(Gallery gallery){
+    /**
-        DeleteGalleryMessage dgm = new DeleteGalleryMessage();
+     * 下发一条带稳定 operationId 的任务命令；未协商 v2 时退化为旧的 DownloadPostMessage，
-        dgm.setGalleryName(gallery.getName());
+     * 保证新旧节点组合仍可用（旧节点上无法保证可靠 ACK，这是已知的兼容边界）。
-        dgm.messageId = atomicInteger.getAndIncrement();
+     */
+    public byte sendTaskCommand(String action, String operationId, int gid, String name) {
+        if (!v2Negotiated)
+            return TaskCommandMessage.ACTION_DELETE.equals(action)
+                    ? legacyDeleteCommand(gid, name)
+                    : legacyDownloadCommand(gid, name);
+        TaskCommandMessage command = new TaskCommandMessage();
+        command.setOperationId(operationId);
+        command.setAction(action);
+        command.setGid(gid);
+        command.setName(name);
+        return sendRequest(command, 10, TimeUnit.SECONDS);
+    }
 
-        channel.writeAndFlush(dgm);
+    /** 删除命令：带独立稳定 operationId，重试复用同一个 ID。 */
-        DefaultPromise<AbstractMessage> promise = new DefaultPromise<>(eventLoopGroup);
+    public byte sendDeleteCommand(String operationId, int gid, String name) {
-        promiseHashMap.put(dgm.messageId, promise);
+        if (!v2Negotiated)
-        try{
+            return legacyDeleteCommand(gid, name);
-            boolean result = promise.await(10, TimeUnit.SECONDS);
+        TaskCommandMessage command = new TaskCommandMessage();
-            if(result){
+        command.setOperationId(operationId);
-                ResponseMessage rsm = (ResponseMessage) promise.getNow();
+        command.setAction(TaskCommandMessage.ACTION_DELETE);
-                return rsm.getResult();
+        command.setGid(gid);
-            }else return -1;
+        command.setName(name);
+        return sendRequest(command, 10, TimeUnit.SECONDS);
+    }
+
+    /** 旧的无 operationId 删除命令，供未协商 v2 时退避使用。 */
+    private byte legacyDeleteCommand(int gid, String name) {
+        Gallery gallery = new Gallery();
+        gallery.setGid(gid);
+        gallery.setName(name);
+        return deleteGallery(gallery);
+    }
+
+    public RetryResult retryGallery(Gallery gallery){
+        // 提交结果未知或被删除的任务不能重试：节点可能已经把未计量任务当成新下载。
+        GalleryTaskLifecycleService.DispatchDecision decision = resolveDispatchDecision(gallery.getGid());
+        if (decision != null && !decision.dispatchable())
+            return new RetryResult(false, "该任务提交结果未知或正在删除，需要人工对账后再重试");
+        CompletableFuture<String> statusFuture = new CompletableFuture<>();
+        retryStatusWaiters.computeIfAbsent(gallery.getGid(), ignored -> new CopyOnWriteArrayList<>())
+                .add(statusFuture);
+        try {
+            byte submitResult = addGalleryToQueue(gallery);
+            if(submitResult != 0 && !statusFuture.isDone())
+                return new RetryResult(false, "节点未接受重试请求");
+            // 竞态兜底：本方法读到的 Gallery 是调用方传入的旧快照，注册等待者与节点被通知之间
+            // 节点可能刚完成清理（例如 ACK 之后已清队列、重复 DOWNLOAD 只回放 receipt 不再产生新上报）。
+            // 此时按「当前库里的真实状态」收尾：只认重新读到的完成状态，绝不把传入的旧进行中状态
+            // 当作节点的新确认返回。
+            String completedStatus = currentCompletedStatus(gallery.getGid());
+            if (completedStatus != null && !statusFuture.isDone())
+                statusFuture.complete(completedStatus);
+            return new RetryResult(true, statusFuture.get(10, TimeUnit.SECONDS));
+        }catch (TimeoutException e){
+            return new RetryResult(false, "节点已收到重试请求，但未及时返回任务状态");
+        }catch (ExecutionException e){
+            log.warn("等待重试状态失败, gid={}", gallery.getGid(), e);
+            return new RetryResult(false, "获取任务状态失败");
         }catch (InterruptedException e){
-            log.warn("deleteGallery interrupted", e);
+            log.warn("等待重试状态被中断, gid={}", gallery.getGid(), e);
             Thread.currentThread().interrupt();
-            return -1;
+            return new RetryResult(false, "获取任务状态被中断");
+        }finally {
+            retryStatusWaiters.computeIfPresent(gallery.getGid(), (gid, waiters) -> {
+                waiters.remove(statusFuture);
+                return waiters.isEmpty() ? null : waiters;
+            });
+        }
+    }
+
+    private void completeRetryStatusWaiters(int gid, String status){
+        CopyOnWriteArrayList<CompletableFuture<String>> waiters = retryStatusWaiters.remove(gid);
+        if(waiters != null)
+            waiters.forEach(waiter -> waiter.complete(status));
+    }
+
+    /**
+     * 重新读库确认任务是否已真正完成；只用于「节点已接受重试」之后的竞态兜底。
+     *
+     * <p>读库失败一律返回 null：宁可继续等上报，也不能凭一次失败的读把未知状态说成完成。
+     */
+    private String currentCompletedStatus(int gid) {
+        try {
+            Gallery current = galleryMapper.selectGalleryByGid(gid);
+            if (current != null && TaskStatus.COMPLETE.equals(current.getStatus()))
+                return current.getStatus();
+        } catch (RuntimeException e) {
+            log.warn("重试时读取任务当前状态失败 gid={}", gid, e);
+        }
+        return null;
+    }
+
+    public record RetryResult(boolean success, String message) {}
+
+    public byte deleteGallery(Gallery gallery){
+        DeleteGalleryMessage message = new DeleteGalleryMessage();
+        message.setGalleryName(gallery.getName());
+        return sendRequest(message, 10, TimeUnit.SECONDS);
+    }
+
+    private void startMonitor() {
+        if (stopping || !monitoring.compareAndSet(false, true))
+            return;
+        monitor = new Thread(this::monitorFunc, "storage-node-monitor");
+        monitor.setDaemon(true);
+        monitor.start();
+    }
+
+    private void closeMonitorSocket() {
+        ServerSocket socket = monitorSocket;
+        if (socket != null) {
+            try { socket.close(); }
+            catch (IOException e) { log.debug("关闭节点监听失败", e); }
         }
     }
 
     public void monitorFunc(){
-        int real_port = CustomUtil._findIdlePort(port + 1);
+        try (ServerSocket socket = new ServerSocket(CustomUtil._findIdlePort(port + 1))) {
-        log.info("监听端口： {}等待节点上线", real_port);
+            monitorSocket = socket;
-        try(ServerSocket socket = new ServerSocket(real_port)) {
+            if (stopping || !isDead())
-            Socket client;
+                return;
-            while(true){
+            log.info("监听端口： {}等待节点上线", socket.getLocalPort());
-                client = socket.accept();
+            while (!stopping) {
-
+                try (Socket client = socket.accept()) {
-                if(client.getInetAddress().getHostAddress().equals(ip)){
+                    if (!client.getInetAddress().getHostAddress().equals(ip))
-                    //连接之后发送lionwebsite，否则存储节点不能确认这个端口是否有效
+                        continue;
-                    OutputStream outputStream = client.getOutputStream();
+                    OutputStream output = client.getOutputStream();
-                    outputStream.write("lionwebsite".getBytes());
+                    output.write("lionwebsite".getBytes(java.nio.charset.StandardCharsets.UTF_8));
-                    outputStream.flush();
+                    output.flush();
-                    outputStream.close();
+                    client.shutdownOutput();
-                    log.info("尝试连接");
+                    if (initChannel())
-                    initChannel();
+                        break;
-                    client.close();
-                    socket.close();
-                    break;
                 }
             }
         } catch (IOException e) {
-            throw new RuntimeException(e);
+            if (!stopping && isDead())
+                log.warn("等待节点上线失败", e);
+        } finally {
+            monitorSocket = null;
+            monitoring.set(false);
+            // A connection may flap while the previous monitor is still exiting.
+            if (!stopping && isDead()) {
+                try { networkGroup.next().schedule(this::startMonitor, 5, TimeUnit.SECONDS); }
+                catch (java.util.concurrent.RejectedExecutionException e) {
+                    if (!stopping) log.warn("安排节点监听重试失败", e);
+                }
+            }
         }
     }
 
@@ -250,40 +730,144 @@ public class RemoteService {
             //下载状态
             if(msg instanceof DownloadStatusMessage dsm){
                 GalleryTask[] galleryTasks = dsm.getGalleryTasks();
-                for (GalleryTask galleryTask : galleryTasks) {
+                // 落库与通知可能较慢（含 Telegram 推送），交给单线程顺序执行，
-                    Gallery gallery = galleryMapper.selectGalleryByGid(galleryTask.getGid());
+                // 不再占用 Netty IO 线程；异常在此兜住，避免打进 IO 线程。
-                    gallery.setProceeding(galleryTask.getProceeding());
+                statusApplyExecutor.execute(() -> {
-
+                    try {
-                    if(!gallery.getName().equals(galleryTask.getName()) && galleryTask.getName() != null)
+                        applyReportedStatus(galleryTasks);
-                        gallery.setName(galleryTask.getName());
+                    } catch (Exception e) {
-
+                        log.warn("处理节点上报的任务状态失败", e);
-                    if(galleryTask.getStatus() == GalleryTask.COMPRESS_COMPLETE) {
-                        gallery.setStatus("下载完成");
-                        pushService.downloadComplete(gallery);
                     }
-                    else if(galleryTask.getStatus() == GalleryTask.COMPRESSING)
+                });
-                        gallery.setStatus("压缩中");
-                    else if(galleryTask.getProceeding() != 0)
-                        gallery.setStatus("下载中");
-
-                    log.info(gallery.getName() + "下载进度:" + gallery.getProceeding() + "/" + gallery.getPages());
-                    galleryMapper.updateGallery(gallery);
-                }
-                webSocketService.updateTaskProcessing(galleryTasks);
             }
-            else if(msg instanceof ResponseMessage rsm)
+            else if(msg instanceof ProtocolHelloMessage hello) {
-                promiseHashMap.get(rsm.messageId).setSuccess(rsm);
+                // 节点声明了 v2 可靠任务能力；此后才允许使用类型 11..13。
+                v2Negotiated = hello.supportsReliableTasks();
+                log.info("节点协议协商完成 v2={} version={}", v2Negotiated, hello.getProtocolVersion());
+                CompletableFuture<Boolean> negotiation = helloNegotiation;
+                if (negotiation != null)
+                    negotiation.complete(v2Negotiated);
+            }
+            else if(msg instanceof TaskReportMessage report) {
+                // 事务提交与 ACK 都放在单线程消费队列里顺序执行，避免并发写库。
+                statusApplyExecutor.execute(() -> consumeV2Report(report));
+            }
+            else if(msg instanceof ResponseMessage rsm) {
+                Promise<AbstractMessage> promise = promiseHashMap.remove(rsm.messageId);
+                if(promise != null)
+                    promise.trySuccess(rsm);
+                else
+                    log.warn("收到无等待者的响应消息: messageId={}", rsm.messageId);
+            }
+        }
+
+        /** 消费协议 v2 上报：事务提交 → 唤醒重试等待者 → 回 ACK → 独立执行器做通知/推送。 */
+        private void consumeV2Report(TaskReportMessage report) {
+            try {
+                TaskReportHandler handler = taskReportHandler;
+                if (handler == null) {
+                    log.warn("收到 v2 上报但未装配处理器，暂不回执 reportId={}", report.getReportId());
+                    return;
+                }
+                TaskReportHandler.CommittedReport committed = handler.apply(report);
+                if (committed == null) {
+                    // 提交失败：不回 ACK，节点保留快照后重投。
+                    log.warn("v2 上报未提交，等待节点重投 reportId={}", report.getReportId());
+                    return;
+                }
+                // 先完成等待者：apply 已确认提交，这一步绝不能因随后的 ACK 写入抛异常而丢失。
+                completeRetryStatusWaitersFor(committed.acceptedTasks());
+                // 提交成功之后才回执，让节点清理快照。
+                Channel target = channel;
+                if (target != null && target.isActive())
+                    target.writeAndFlush(new TaskReportAckMessage(committed.reportId(), TaskReportAckMessage.RESULT_SUCCESS));
+                dispatchNotifications(report, committed);
+            } catch (Exception e) {
+                log.warn("处理 v2 上报失败 reportId={}", report.getReportId(), e);
+            }
+        }
+
+        /** 事务提交之后、ACK 与通知之前，按「真正被接受的更新」唤醒等待重试结果的调用方。
+         *  被过滤的过期/旧 operation/待删除任务不在 acceptedTasks 里，不得完成等待者。 */
+        private void completeRetryStatusWaitersFor(List<GalleryTask> acceptedTasks) {
+            if (acceptedTasks == null || acceptedTasks.isEmpty())
+                return;
+            for (GalleryTask task : acceptedTasks) {
+                if (task == null)
+                    continue;
+                String status = TaskStatus.fromReport(task.getStatus());
+                if (status != null)
+                    completeRetryStatusWaiters(task.getGid(), status);
+            }
+        }
+
+        /** 通知/推送在独立执行器里执行，外部延迟不会阻塞状态提交。 */
+        private void dispatchNotifications(TaskReportMessage report, TaskReportHandler.CommittedReport committed) {
+            // 只推送事务里真正被接受的更新（含下载中/压缩中等中间状态）；
+            // 过期、旧世代、待删除任务已被过滤掉，不会把它们带到前端。
+            GalleryTask[] accepted = committed.acceptedTasks() == null
+                    ? new GalleryTask[0]
+                    : committed.acceptedTasks().toArray(new GalleryTask[0]);
+            List<Gallery> newlyCompleted = committed.newlyCompleted();
+            try {
+                notificationExecutor.execute(() -> {
+                    try {
+                        for (Gallery gallery : newlyCompleted)
+                            pushService.downloadComplete(gallery);
+                        if (accepted.length > 0)
+                            webSocketService.updateTaskProcessing(accepted);
+                    } catch (Exception e) {
+                        log.warn("任务完成通知/推送失败", e);
+                    }
+                });
+            } catch (java.util.concurrent.RejectedExecutionException e) {
+                // 通知队列已关闭只是「推不出去」，既不能影响已提交的 ACK，也不能影响重试等待者。
+                log.warn("通知任务被拒绝，状态仍已提交 reportId={}", report.getReportId());
+            }
+        }
+
+        /** 把节点上报的任务状态写回库里并推送给前端，按上报顺序逐个处理。 */
+        private void applyReportedStatus(GalleryTask[] galleryTasks) {
+            for (GalleryTask galleryTask : galleryTasks) {
+                Gallery gallery = galleryMapper.selectGalleryByGid(galleryTask.getGid());
+                if (gallery == null) {
+                    log.warn("收到节点上报的未知任务状态，已忽略: gid={}, name={}",
+                            galleryTask.getGid(), galleryTask.getName());
+                    continue;
+                }
+                gallery.setProceeding(galleryTask.getProceeding());
+
+                if(!gallery.getName().equals(galleryTask.getName()) && galleryTask.getName() != null)
+                    gallery.setName(galleryTask.getName());
+
+                if(galleryTask.getStatus() == GalleryTask.COMPRESS_COMPLETE) {
+                    boolean justCompleted = !"下载完成".equals(gallery.getStatus());
+                    gallery.setStatus("下载完成");
+                    if (justCompleted)
+                        pushService.downloadComplete(gallery);
+                }
+                else if(galleryTask.getStatus() == GalleryTask.COMPRESSING)
+                    gallery.setStatus("压缩中");
+                else if(galleryTask.getStatus() == GalleryTask.DOWNLOAD_COMPLETE)
+                    gallery.setStatus("等待压缩");
+                else if(galleryTask.getStatus() == GalleryTask.DOWNLOADING)
+                    gallery.setStatus("下载中");
+
+                log.info(gallery.getName() + "下载进度:" + gallery.getProceeding() + "/" + gallery.getPages());
+                galleryMapper.updateGallery(gallery);
+                completeRetryStatusWaiters(gallery.getGid(), gallery.getStatus());
+            }
+            webSocketService.updateTaskProcessing(galleryTasks);
         }
 
         @Override
         public void channelUnregistered(ChannelHandlerContext ctx) {
-            log.info("{}", ctx.channel());
+            if (ctx.channel() == channel) {
-            log.info("{}", channel);
+                failPendingRequests();
-            if(ctx.channel() != null && ctx.channel().remoteAddress().toString().equals(channel.remoteAddress().toString())){
+                if (!stopping) {
-                log.info("activate monitor thread, waiting for node back online");
+                    pushService.storageNodeOffline();
-                pushService.storageNodeOffline();
+                    startMonitor();
-                monitor = new Thread(RemoteService.this::monitorFunc);
+                }
-                monitor.start();
             }
         }
     }

src/main/java/com/lion/lionwebsite/Service/SubService.java

@@ -2,8 +2,11 @@ package com.lion.lionwebsite.Service;
 
 import cn.hutool.core.util.RandomUtil;
 import com.lion.lionwebsite.Dao.normal.SubMapper;
+import com.lion.lionwebsite.Dao.normal.UserMapper;
 import com.lion.lionwebsite.Domain.SubBind;
 import com.lion.lionwebsite.Domain.SubUpdateRecord;
+import com.lion.lionwebsite.Domain.SubscriptionEvent;
+import com.lion.lionwebsite.Domain.SubscriptionAccount;
 import com.lion.lionwebsite.Util.CustomUtil;
 import com.lion.lionwebsite.Util.FileDownload;
 import com.lion.lionwebsite.Util.GalleryUtil;
@@ -15,111 +18,365 @@ import lombok.extern.slf4j.Slf4j;
 import org.jsoup.Jsoup;
 import org.jsoup.select.Elements;
 import org.springframework.stereotype.Service;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.transaction.support.TransactionTemplate;
+import jakarta.annotation.PreDestroy;
 
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
 import java.util.ArrayList;
 import java.util.Date;
+import java.util.concurrent.Executor;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.locks.Lock;
+import java.util.function.Supplier;
 
-@Service
+    @Service
-@Slf4j
+    @Slf4j
-@RequiredArgsConstructor
+    @RequiredArgsConstructor
-public class SubService {
+    public class SubService {
-    final SubMapper subMapper;
+        final SubMapper subMapper;
+        final UserMapper userMapper;
+        final SubscriptionRefreshService refreshService;
+        final RemoteService remoteService;
+        final SubscriptionStateCoordinator stateCoordinator;
 
-    public String insertSubBind(String user){
+        @Autowired
+        @Qualifier("mainTransactionTemplate")
+        TransactionTemplate transactions;
+
+        @Autowired(required = false)
+        SubscriptionEventService subscriptionEvents;
+
+        /**
+         * 归属地查询是同步外呼（最长十几秒），且失败只影响记录里的一列展示。
+         * 若放在订阅分发路径上，用户取一次订阅就得先等它完成，因此改为后台补齐。
+         *
+         * <p>非 final：测试可替换为受控执行器，避免在单测里触发真实外呼。
+         */
+        Executor locationExecutor = newFixedLocationExecutor();
+
+        private static ExecutorService newFixedLocationExecutor() {
+            return new java.util.concurrent.ThreadPoolExecutor(2, 2, 0, java.util.concurrent.TimeUnit.MILLISECONDS,
+                    new java.util.concurrent.ArrayBlockingQueue<>(128), r -> {
+                Thread thread = new Thread(r, "sub-location-resolver");
+                thread.setDaemon(true);
+                return thread;
+            }, new java.util.concurrent.ThreadPoolExecutor.AbortPolicy());
+        }
+
+    public String insertSubscriptionAccount(String name, String upstreamKey, boolean filterHighMultiplier, boolean enabled) {
         Response response = Response.generateResponse();
+        SubscriptionAccount account;
+        Lock lock = stateCoordinator.writeLock();
+        lock.lock();
+        try {
+            if (name == null || name.isBlank() || upstreamKey == null || upstreamKey.isBlank())
+                return response.failure("名称和上游 key 不能为空").toJSONString();
+            if (subMapper.countSubscriptionAccountName(name.trim()) > 0 || subMapper.countSubscriptionAccountKey(upstreamKey.trim()) > 0)
+                return response.failure("名称或上游 key 已存在").toJSONString();
+            account = new SubscriptionAccount();
+            account.setName(name.trim());
+            account.setUpstreamKey(upstreamKey.trim());
+            account.setFilterHighMultiplier(filterHighMultiplier);
+            account.setEnabled(enabled);
+            subMapper.insertSubscriptionAccount(account);
+        } finally {
+            lock.unlock();
+        }
+        if (enabled)
+            refreshService.refresh(account.getId());
+        remoteService.requestSubscriptionSync();
+        return response.success(accountJson(account)).toJSONString();
+    }
+
+    public String listSubscriptionAccounts() {
+        ArrayList<SubscriptionAccount> accounts = subMapper.selectAllSubscriptionAccounts();
+        for (SubscriptionAccount account : accounts) {
+            account.setV2Url(refreshService.v2Url(account));
+            account.setClashUrl(refreshService.clashUrl(account));
+        }
+        return Response.generateResponse().success(CustomUtil.objectMapper.valueToTree(accounts)).toJSONString();
+    }
+
+    public String updateSubscriptionAccount(Integer id, String name, String upstreamKey, boolean filterHighMultiplier, boolean enabled) {
+        Response response = Response.generateResponse();
+        SubscriptionAccount account;
+        Lock lock = stateCoordinator.writeLock();
+        lock.lock();
+        try {
+            account = subMapper.selectSubscriptionAccount(id);
+            if (account == null)
+                return response.failure("子账号不存在").toJSONString();
+            if (name == null || name.isBlank() || upstreamKey == null || upstreamKey.isBlank())
+                return response.failure("名称和上游 key 不能为空").toJSONString();
+            for (SubscriptionAccount existing : subMapper.selectAllSubscriptionAccounts()) {
+                if (!existing.getId().equals(id) && (existing.getName().equals(name.trim()) || existing.getUpstreamKey().equals(upstreamKey.trim())))
+                    return response.failure("名称或上游 key 已存在").toJSONString();
+            }
+            boolean changed = !account.getUpstreamKey().equals(upstreamKey.trim())
+                    || account.isFilterHighMultiplier() != filterHighMultiplier || account.isEnabled() != enabled;
+            account.setName(name.trim());
+            account.setUpstreamKey(upstreamKey.trim());
+            account.setFilterHighMultiplier(filterHighMultiplier);
+            account.setEnabled(enabled);
+            subMapper.updateSubscriptionAccount(account);
+            if (changed)
+                refreshService.invalidateCache(id);
+        } finally {
+            lock.unlock();
+        }
+        if (enabled)
+            refreshService.refresh(id);
+        remoteService.requestSubscriptionSync();
+        return response.success(accountJson(account)).toJSONString();
+    }
+
+    public String deleteSubscriptionAccount(Integer id) {
+        return withWriteLock(() -> deleteSubscriptionAccountUnlocked(id));
+    }
+
+    private String deleteSubscriptionAccountUnlocked(Integer id) {
+        Response response = Response.generateResponse();
+        SubscriptionAccount account = subMapper.selectSubscriptionAccount(id);
+        if (account == null)
+            return response.failure("子账号不存在").toJSONString();
+        if (account.getBoundUserCount() != null && account.getBoundUserCount() > 0)
+            return response.failure("子账号仍绑定用户，请先改绑").toJSONString();
+        subMapper.deleteSubscriptionAccount(id);
+        refreshService.invalidateCache(id);
+        remoteService.requestSubscriptionSync();
+        return response.success("删除成功").toJSONString();
+    }
+
+    public String refreshSubscriptionAccount(Integer id) {
+        boolean success = refreshService.refresh(id);
+        remoteService.requestSubscriptionSync();
+        return success ? Response._success("刷新成功") : Response._failure("刷新失败，请查看子账号错误状态");
+    }
+
+    public String insertSubBind(String user, Integer accountId) {
+        return withWriteLock(() -> insertSubBindUnlocked(user, accountId));
+    }
+
+    private String insertSubBindUnlocked(String user, Integer accountId) {
+        Response response = Response.generateResponse();
+        if (user == null || user.isBlank() || userMapper.selectUserByUsername(user) == null)
+            return response.failure("用户不存在").toJSONString();
+        SubscriptionAccount account = accountId == null ? firstEnabledAccount() : subMapper.selectSubscriptionAccount(accountId);
+        if (account == null || !account.isEnabled())
+            return response.failure("子账号不存在或已停用").toJSONString();
+        if (!refreshService.hasCompleteCache(account.getId()))
+            return response.failure("子账号尚无有效缓存，请先刷新").toJSONString();
+        if (subMapper.countSubBindByUser(user) > 0)
+            return response.failure("用户已绑定子账号，请使用改绑").toJSONString();
         String key = RandomUtil.randomString(8);
         while (subMapper.selectSubBindExist(key))
             key = RandomUtil.randomString(8);
-
+        subMapper.insertSubBind(new SubBind(key, user, account.getId(), account.getName(), account.isEnabled(), account.isFilterHighMultiplier()));
-        SubBind subBind = new SubBind(key, user);
+        remoteService.requestSubscriptionSync();
-        subMapper.insertSubBind(subBind);
-
         return response.success("添加成功").toJSONString();
     }
 
-    public String resetKey(String user){
+    public String resetKey(String user) {
-        Response response = Response.generateResponse();
+        return withWriteLock(() -> resetKeyUnlocked(user));
+    }
 
-        subMapper.deleteSubBind(user);
+    private String resetKeyUnlocked(String user) {
-        subMapper.deleteSubUpdateRecord(user);
+        Response response = Response.generateResponse();
+        if (subMapper.countSubBindByUser(user) == 0)
+            return response.failure("绑定不存在").toJSONString();
         String key = RandomUtil.randomString(8);
         while (subMapper.selectSubBindExist(key))
             key = RandomUtil.randomString(8);
-        SubBind subBind = new SubBind(key, user);
+        rememberEventBindings();
-        subMapper.insertSubBind(subBind);
+        subMapper.updateSubBindKey(user, key);
-
+        subMapper.deleteSubUpdateRecord(user);
+        remoteService.requestSubscriptionSync();
         return response.success().toJSONString();
     }
 
-    public String selectAllSubBind(){
+    public String rebind(String user, Integer accountId) {
-        Response response = Response.generateResponse();
+        return withWriteLock(() -> rebindUnlocked(user, accountId));
-        ArrayList<SubBind> subBinds = subMapper.selectAllSubBind();
-        return response.success(CustomUtil.objectMapper.valueToTree(subBinds)).toJSONString();
     }
 
-    public String SelectAllSubUpdateRecord(){
+    private String rebindUnlocked(String user, Integer accountId) {
         Response response = Response.generateResponse();
-        ArrayList<SubUpdateRecord> subUpdateRecords = subMapper.selectAllSubUpdateRecord();
+        SubscriptionAccount account = subMapper.selectSubscriptionAccount(accountId);
-        return response.success(CustomUtil.objectMapper.valueToTree(subUpdateRecords)).toJSONString();
+        if (account == null || !account.isEnabled())
+            return response.failure("子账号不存在或已停用").toJSONString();
+        if (!refreshService.hasCompleteCache(account.getId()))
+            return response.failure("子账号尚无有效缓存，请先刷新").toJSONString();
+        if (subMapper.updateSubBindAccount(user, accountId) == 0)
+            return response.failure("绑定不存在").toJSONString();
+        remoteService.requestSubscriptionSync();
+        return response.success("改绑成功").toJSONString();
     }
 
-    public void updateSub(HttpServletResponse response, HttpServletRequest request, String client, String key){
+    public String selectAllSubBind() {
-        if(key == null || client == null)
+        return Response.generateResponse().success(CustomUtil.objectMapper.valueToTree(subMapper.selectAllSubBind())).toJSONString();
-            return;
+    }
 
-        SubBind subBind = subMapper.selectSubBind(key);
+    public String SelectAllSubUpdateRecord() {
-        if(subBind == null)
+        return Response.generateResponse().success(CustomUtil.objectMapper.valueToTree(subMapper.selectAllSubUpdateRecord())).toJSONString();
-            return;
+    }
 
-        String ip;
+    public void updateSub(HttpServletResponse response, HttpServletRequest request, String client, String key) {
-        if(request.getRemoteAddr().equals("127.0.0.1")){
+        Lock lock = stateCoordinator.readLock();
-            ip = request.getHeader("X-Forwarded-For");
+        lock.lock();
-            if(ip.contains(","))
-                ip = ip.split(",")[0].trim();
-            if(ip.contains(":"))
-                ip = ip.split(":")[0].trim();
-        } else
-            ip = request.getRemoteAddr();
-
-        String UA = request.getHeader("User-Agent");
-        if(UA == null)
-            return;
-
-        String location;
         try {
-            String page = GalleryUtil.requests("https://www.ip138.com/iplookup.php?ip=" + ip, "get", null, null);
+            distributeSubscription(response, request, client, key);
-            Elements tds = Jsoup.parse(page).select("body > div > div.container > div.content > div > div:nth-child(2) > div.group-left > div > div.bd > div.table-outer > div.table-box > table > tbody > tr > td");
+        } finally {
-            if(tds.size() > 3)
+            lock.unlock();
-                location = tds.get(1).text().replace("中国", "") + " " + tds.get(3).text().trim();
-            else
-                location = tds.get(1).text();
-        }catch (IOException e){
-            log.error("获取ip地址信息失败: {}", e.getMessage());
-            location = "unknown";
         }
+    }
 
-        SubUpdateRecord subUpdateRecord = new SubUpdateRecord(0, subBind.getUser(), ip, UA, new Date(), location);
+    private void distributeSubscription(HttpServletResponse response, HttpServletRequest request, String client, String key) {
-        subMapper.insertSubUpdateRecord(subUpdateRecord);
+        if (key == null || client == null)
-        if(subMapper.selectUpdateRecordCount(subBind.getUser()) > 10)
+            return;
-            subMapper.deleteSubUpdateRecordById(subMapper.selectMinUpdateRecordId(subBind.getUser()));
+        SubBind subBind = subMapper.selectSubBind(key);
+        if (subBind == null || subBind.getSubscriptionAccountId() == null || !subBind.isSubscriptionAccountEnabled()) {
+            sendStatus(response, HttpServletResponse.SC_NOT_FOUND, "subscription not found");
+            return;
+        }
+        String ip = resolveClientIp(request);
+        String ua = request.getHeader("User-Agent");
+        SubscriptionEvent event = subscriptionEvents == null ? null : subscriptionEvents.requestEvent(request, key, client);
+        if (ua == null && event == null) return;
+        if (event == null) recordUpdate(subBind, ip, ua);
+        if (!"v2".equals(client) && !"cat".equals(client)) {
+            sendStatus(response, HttpServletResponse.SC_BAD_REQUEST, "client error");
+            return;
+        }
+        java.nio.file.Path path = refreshService.cachedPath(subBind.getSubscriptionAccountId(), client);
+        if (!Files.isRegularFile(path)) {
+            sendStatus(response, HttpServletResponse.SC_SERVICE_UNAVAILABLE, "subscription unavailable");
+            return;
+        }
+        if (event != null && !"HEAD".equalsIgnoreCase(request.getMethod()))
+            subscriptionEvents.recordPrimary(event, subBind);
+        FileDownload.export(request, response, path.toString());
+    }
 
-        switch (client){
+    private static String resolveClientIp(HttpServletRequest request) {
-            case "v2" -> FileDownload.export(request, response, "sub/DouNaiV2ray.txt");
+        String remoteAddr = headerAddress(request.getRemoteAddr());
-            case "cat" -> FileDownload.export(request, response, "sub/DouNaiClash.txt");
+        if (isLoopback(remoteAddr)) {
-            default -> {
+            String forwardedFor = headerAddress(request.getHeader("X-Forwarded-For"));
-                try{
+            if (forwardedFor != null)
-                    response.getOutputStream().write("client error".getBytes(StandardCharsets.UTF_8));
+                return forwardedFor;
-                } catch (IOException ignored){}
+            String realIp = headerAddress(request.getHeader("X-Real-IP"));
+            if (realIp != null)
+                return realIp;
+        }
+        return remoteAddr == null ? "unknown" : remoteAddr;
+    }
+
+    private static String headerAddress(String value) {
+        if (value == null || value.isBlank())
+            return null;
+        String address = value.split(",", 2)[0].trim();
+        return address.isBlank() || "unknown".equalsIgnoreCase(address) ? null : address;
+    }
+
+    private static boolean isLoopback(String address) {
+        return "127.0.0.1".equals(address) || "::1".equals(address)
+                || "0:0:0:0:0:0:0:1".equals(address);
+    }
+
+    private void recordUpdate(SubBind binding, String ip, String ua) {
+        String user = binding.getUser();
+        // 先落一条 unknown 记录并立即返回，归属地随后在后台补齐；
+        // 这样取订阅的延迟不再取决于第三方定位站点的响应时间。
+        SubUpdateRecord record = new SubUpdateRecord(0, user, ip, ua, new Date(), "unknown");
+        record.setUserId(binding.getUserId());
+        subMapper.insertSubUpdateRecord(record);
+        if (subMapper.selectUpdateRecordCount(user) > 10)
+            subMapper.deleteSubUpdateRecordById(subMapper.selectMinUpdateRecordId(user));
+        // Capture the generated row ID: another request may arrive before the lookup finishes.
+        if (record.getId() > 0) {
+            try {
+                locationExecutor.execute(() -> enrichLocation(record.getId(), ip));
+            } catch (java.util.concurrent.RejectedExecutionException busy) {
+                log.debug("位置查询队列已满，保留 unknown recordId={}", record.getId());
             }
         }
     }
 
-    public String deleteSubBind(String user){
+    /** 后台按记录 ID 补齐归属地；任何失败都只记日志，不影响已落库的记录。 */
-        Response response = Response.generateResponse();
+    private void enrichLocation(int recordId, String ip) {
+        try {
+            String location = resolveLocation(ip);
+            if (location == null || location.isBlank() || "unknown".equals(location))
+                return;
+            subMapper.updateSubUpdateRecordLocation(recordId, location);
+        } catch (Exception e) {
+            log.debug("补齐订阅更新记录归属地失败 recordId={}", recordId, e);
+        }
+    }
+
+    /**
+     * 查询 IP 归属地。第三方站点结构变化或网络异常都只降级为 unknown，
+     * 绝不让定位失败影响订阅分发本身。
+     */
+    static String resolveLocation(String ip) {
+        try {
+            String page = GalleryUtil.requests("https://www.ip138.com/iplookup.php?ip=" + ip, "get", null, null);
+            Elements tds = Jsoup.parse(page).select("body > div > div.container > div.content > div > div:nth-child(2) > div.group-left > div > div.bd > div.table-outer > div.table-box > table > tbody > tr > td");
+            return tds.size() > 3 ? tds.get(1).text().replace("中国", "") + " " + tds.get(3).text().trim()
+                    : (tds.isEmpty() ? "unknown" : tds.get(1).text());
+        } catch (Exception e) {
+            return "unknown";
+        }
+    }
+
+    public String deleteSubBind(String user) {
+        return withWriteLock(() -> deleteSubBindUnlocked(user));
+    }
+
+    private String deleteSubBindUnlocked(String user) {
+        rememberEventBindings();
         subMapper.deleteSubBind(user);
         subMapper.deleteSubUpdateRecord(user);
-        return response.success("删除成功").toJSONString();
+        remoteService.requestSubscriptionSync();
+        return Response._success("删除成功");
+    }
+
+    private void rememberEventBindings() {
+        if (subscriptionEvents != null) subscriptionEvents.rememberBindings(subMapper.selectAllSubBind());
+    }
+
+    private String withWriteLock(Supplier<String> action) {
+        Lock stateLock = stateCoordinator.writeLock();
+        stateLock.lock();
+        try {
+            return transactions == null ? action.get() : transactions.execute(ignored -> action.get());
+        } finally {
+            stateLock.unlock();
+        }
+    }
+
+    @PreDestroy
+    void shutdownLocationResolver() {
+        if (locationExecutor instanceof ExecutorService service)
+            service.shutdownNow();
+    }
+
+    private SubscriptionAccount firstEnabledAccount() {
+        return subMapper.selectAllSubscriptionAccounts().stream().filter(SubscriptionAccount::isEnabled).findFirst().orElse(null);
+    }
+
+    private tools.jackson.databind.JsonNode accountJson(SubscriptionAccount account) {
+        account.setV2Url(refreshService.v2Url(account));
+        account.setClashUrl(refreshService.clashUrl(account));
+        return CustomUtil.objectMapper.valueToTree(account);
+    }
+
+    private static void sendStatus(HttpServletResponse response, int status, String message) {
+        try {
+            response.sendError(status, message);
+        } catch (IOException ignored) { }
     }
 }

src/main/java/com/lion/lionwebsite/Service/SubscriptionEventService.java

@@ -0,0 +1,224 @@
+package com.lion.lionwebsite.Service;
+
+import com.lion.lionwebsite.Dao.normal.SubMapper;
+import com.lion.lionwebsite.Dao.normal.SubscriptionEventMapper;
+import com.lion.lionwebsite.Dao.normal.UserMapper;
+import com.lion.lionwebsite.Domain.*;
+import com.lion.lionwebsite.Util.CustomUtil;
+import jakarta.annotation.PreDestroy;
+import jakarta.servlet.http.HttpServletRequest;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.support.TransactionTemplate;
+import tools.jackson.databind.JsonNode;
+
+import javax.crypto.Mac;
+import javax.crypto.spec.SecretKeySpec;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.time.Clock;
+import java.util.*;
+import java.util.concurrent.*;
+import java.util.concurrent.locks.Lock;
+
+@Service
+public class SubscriptionEventService {
+    public static final int MAX_BODY = 256 * 1024;
+    private final SubscriptionEventMapper events;
+    private final SubMapper subscriptions;
+    private final UserMapper users;
+    private final TransactionTemplate transactions;
+    private final SubscriptionStateCoordinator coordinator;
+    @Value("${subscription.standby.sync-secret:}") String syncSecret;
+    Clock clock = Clock.systemUTC();
+    private final ExecutorService locations = new ThreadPoolExecutor(1, 1, 0, TimeUnit.MILLISECONDS,
+            new ArrayBlockingQueue<>(128), runnable -> {
+        Thread thread = new Thread(runnable, "subscription-event-location");
+        thread.setDaemon(true);
+        return thread;
+    }, new ThreadPoolExecutor.AbortPolicy());
+
+    public SubscriptionEventService(SubscriptionEventMapper events, SubMapper subscriptions, UserMapper users,
+                                    @Qualifier("mainTransactionTemplate") TransactionTemplate transactions,
+                                    SubscriptionStateCoordinator coordinator) {
+        this.events = events;
+        this.subscriptions = subscriptions;
+        this.users = users;
+        this.transactions = transactions;
+        this.coordinator = coordinator;
+    }
+
+    /** Auth failure deliberately discloses neither signature nor payload. */
+    public boolean verify(byte[] body, String timestamp, String signature) {
+        if (body == null || body.length > MAX_BODY || syncSecret == null || syncSecret.isBlank()
+                || timestamp == null || !timestamp.matches("[0-9]{1,12}")
+                || signature == null || !signature.matches("[0-9a-fA-F]{64}")) return false;
+        try {
+            long seconds = Long.parseLong(timestamp);
+            if (Math.abs(clock.instant().getEpochSecond() - seconds) > 300) return false;
+            Mac mac = Mac.getInstance("HmacSHA256");
+            mac.init(new SecretKeySpec(syncSecret.getBytes(StandardCharsets.UTF_8), "HmacSHA256"));
+            byte[] expected = mac.doFinal(("v1\n" + timestamp + "\n" + sha256(body)).getBytes(StandardCharsets.UTF_8));
+            return MessageDigest.isEqual(expected, HexFormat.of().parseHex(signature));
+        } catch (Exception invalid) { return false; }
+    }
+
+    /** Invalid or absent signed headers fall back to the ordinary logging path. */
+    public SubscriptionEvent requestEvent(HttpServletRequest request, String key, String client) {
+        String encoded = request.getHeader("X-Subscription-Event");
+        if (encoded == null || encoded.length() > 8192 || !encoded.matches("[A-Za-z0-9_-]+")) return null;
+        try {
+            byte[] body = Base64.getUrlDecoder().decode(encoded);
+            if (!verify(body, request.getHeader("X-Subscription-Timestamp"), request.getHeader("X-Subscription-Signature"))) return null;
+            SubscriptionEvent event = parse(CustomUtil.objectMapper.readTree(body));
+            String ua = Objects.requireNonNullElse(request.getHeader("User-Agent"), "");
+            if (!event.getKeyHash().equals(sha256(key.getBytes(StandardCharsets.UTF_8)))
+                    || !event.getClient().equals(client) || !event.getUserAgent().equals(ua)) return null;
+            return event;
+        } catch (Exception invalid) { return null; }
+    }
+
+    public List<SubscriptionEvent> parseBatch(byte[] body) {
+        try {
+            if (body == null || body.length > MAX_BODY) throw new IllegalArgumentException();
+            JsonNode root = CustomUtil.objectMapper.readTree(body);
+            JsonNode list = root.get("events");
+            if (!root.isObject() || list == null || !list.isArray() || list.size() > 100) throw new IllegalArgumentException();
+            List<SubscriptionEvent> result = new ArrayList<>();
+            for (JsonNode item : list) result.add(parse(item));
+            return result;
+        } catch (Exception invalid) { throw new IllegalArgumentException("invalid subscription events"); }
+    }
+
+    SubscriptionEvent parse(JsonNode node) {
+        if (node == null || !node.isObject()) throw new IllegalArgumentException();
+        String id = text(node, "eventId", 36);
+        if (!UUID.fromString(id).toString().equals(id)) throw new IllegalArgumentException();
+        String hash = text(node, "keyHash", 64);
+        if (!hash.matches("[0-9a-f]{64}")) throw new IllegalArgumentException();
+        String client = text(node, "client", 3);
+        if (!client.equals("v2") && !client.equals("cat")) throw new IllegalArgumentException();
+        String ip = text(node, "clientIp", 64);
+        // Literal IPv4/IPv6 only: no host names, URL fragments or query injection into geolocation.
+        if (ip.isEmpty() || !ip.matches("[0-9A-Fa-f:.]+")) throw new IllegalArgumentException();
+        String ua = text(node, "userAgent", 2048);
+        if (ua.chars().anyMatch(c -> c < 32 || c == 127)) throw new IllegalArgumentException();
+        JsonNode time = node.get("occurredAt");
+        if (time == null || !time.isIntegralNumber() || !time.canConvertToLong()) throw new IllegalArgumentException();
+        long occurred = time.longValue();
+        if (occurred < 0 || occurred > clock.millis() + 300_000) throw new IllegalArgumentException();
+        return new SubscriptionEvent(id, hash, client, ip, ua, occurred);
+    }
+
+    private static String text(JsonNode node, String field, int max) {
+        JsonNode value = node.get(field);
+        if (value == null || !value.isString() || value.stringValue().length() > max) throw new IllegalArgumentException();
+        return value.stringValue();
+    }
+
+    public Map<String, Object> ingest(List<SubscriptionEvent> batch) {
+        Lock lock = coordinator.readLock();
+        lock.lock();
+        try {
+            // Return acknowledgements only after execute has returned and the entire transaction committed.
+            List<String> acknowledged = transactions.execute(status -> {
+                events.reserveWriter();
+                List<String> ids = new ArrayList<>();
+                for (SubscriptionEvent event : batch) if (persist(event, "standby", null)) ids.add(event.getEventId());
+                return ids;
+            });
+            return Map.of("acknowledged", Objects.requireNonNull(acknowledged));
+        } finally { lock.unlock(); }
+    }
+
+    public void recordPrimary(SubscriptionEvent event, SubBind binding) {
+        transactions.executeWithoutResult(status -> {
+            events.reserveWriter();
+            if (!persist(event, "primary", binding)) throw new IllegalStateException("subscription user unavailable");
+        });
+    }
+
+    private boolean persist(SubscriptionEvent event, String source, SubBind current) {
+        String fingerprint = sha256((event.getEventId() + "\n" + event.getKeyHash() + "\n" + event.getClient()
+                + "\n" + event.getOccurredAt() + "\n" + event.getClientIp() + "\n" + event.getUserAgent()).getBytes(StandardCharsets.UTF_8));
+        String old = events.fingerprint(event.getEventId());
+        if (old != null) {
+            if (!old.equals(fingerprint)) throw new IllegalArgumentException("event ID conflict");
+            return true;
+        }
+        Integer userId = current == null ? null : current.getUserId();
+        String userName = current == null ? null : current.getUser();
+        if (current == null) {
+            boolean found = false;
+            for (SubBind binding : subscriptions.selectAllSubBind()) {
+                if (sha256(binding.getKey().getBytes(StandardCharsets.UTF_8)).equals(event.getKeyHash())) {
+                    userId = binding.getUserId();
+                    userName = binding.getUser();
+                    found = true;
+                    break;
+                }
+            }
+            if (!found) {
+                SubscriptionEventBinding binding = events.binding(event.getKeyHash());
+                if (binding == null) return false;
+                userId = binding.getUserId();
+                userName = binding.getUserName();
+            }
+        }
+        if (userId != null) {
+            User user = users.selectUserById(userId);
+            if (user == null) {
+                events.insertReceipt(event, source, clock.millis(), fingerprint, "user_deleted");
+                return true;
+            }
+            userName = user.getUsername();
+        }
+        // NULL user_id is a valid legacy subscription label, not a missing/deleted User.
+        // Keep it NULL even if someone later creates a User with the same label.
+        if (userName == null || userName.isBlank()) return false;
+        events.rememberBinding(event.getKeyHash(), userId, userName, clock.millis());
+        SubUpdateRecord record = new SubUpdateRecord(0, userName, event.getClientIp(), event.getUserAgent(),
+                new Date(event.getOccurredAt()), "unknown", userId);
+        events.insertRecord(record);
+        events.pruneRecords(userId, userName);
+        events.insertReceipt(event, source, clock.millis(), fingerprint, "recorded");
+        // Never perform network calls before commit. A dropped/rolled-back record has no enrichment task.
+        org.springframework.transaction.support.TransactionSynchronizationManager.registerSynchronization(
+                new org.springframework.transaction.support.TransactionSynchronization() {
+                    @Override public void afterCommit() { enrich(record.getId(), event.getClientIp()); }
+                });
+        return true;
+    }
+
+    public void rememberBindings(Collection<SubBind> bindings) {
+        for (SubBind binding : bindings) {
+            Integer userId = binding.getUserId();
+            String name = binding.getUser();
+            if (userId != null) {
+                User user = users.selectUserById(userId);
+                if (user != null) name = user.getUsername();
+            }
+            if (name != null && !name.isBlank()) events.rememberBinding(
+                    sha256(binding.getKey().getBytes(StandardCharsets.UTF_8)), userId, name, clock.millis());
+        }
+    }
+
+    private void enrich(int recordId, String ip) {
+        if (recordId <= 0) return;
+        try { locations.execute(() -> {
+            String location = SubService.resolveLocation(ip);
+            if (location != null && !location.isBlank() && !location.equals("unknown")) {
+                try { subscriptions.updateSubUpdateRecordLocation(recordId, location); }
+                catch (Exception ignored) { /* Optional display enrichment; no request failure or sensitive log. */ }
+            }
+        }); } catch (RejectedExecutionException ignored) { }
+    }
+
+    public static String sha256(byte[] body) {
+        try { return HexFormat.of().formatHex(MessageDigest.getInstance("SHA-256").digest(body)); }
+        catch (Exception failure) { throw new IllegalStateException("SHA-256 unavailable"); }
+    }
+
+    @PreDestroy void close() { locations.shutdownNow(); }
+}

src/main/java/com/lion/lionwebsite/Service/SubscriptionRefreshPlanner.java

@@ -0,0 +1,225 @@
+package com.lion.lionwebsite.Service;
+
+import java.time.Clock;
+import java.time.Duration;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Random;
+
+/**
+ * 为一批子账号排定刷新时刻。
+ *
+ * <p>目标：每个账号每 24 小时内至少刷新一次，且各账号的时刻互相错开，
+ * 不出现「一次全量、十几个账号在十几秒内打完」的爆发式请求。
+ *
+ * <p>排程模型是「错峰 + 固定相位」：
+ * <ol>
+ *   <li><b>错峰</b>：首次排程把账号随机铺满一个窗口，两两之间至少隔开 {@code minGap}；</li>
+ *   <li><b>固定相位</b>：账号每次成功后按窗口长度（略减一个 tick）推进，
+ *       因此各自的相位保持不变，分散效果自我维持，不需要每天重新洗牌；</li>
+ *   <li><b>兜底</b>：任何情况下下一次刷新都不会晚于「上次成功 + 窗口」，
+ *       把「24 小时内必然刷新一次」从概率保证变成确定保证。</li>
+ * </ol>
+ *
+ * <p>本类是纯函数式设计（注入 {@link Clock} 与带种子的 {@link Random}），
+ * 不触碰数据库与网络，因此可以直接做确定性单元测试。
+ */
+public class SubscriptionRefreshPlanner {
+
+    private final Clock clock;
+    private final Random random;
+    private final Duration window;
+    private final Duration minGap;
+    /** 一个调度周期的最大延迟；用它给窗口留余量，使实际间隔严格落在窗口内。 */
+    private final Duration tickInterval;
+    /** 刷新失败后的重试间隔。 */
+    private final Duration retryDelay;
+
+    /**
+     * @param clock        时间源，测试可注入固定时钟
+     * @param random       随机源，测试可注入固定种子以复现排程
+     * @param window       刷新窗口，即「24 小时内至少一次」中的 24 小时
+     * @param minGap       相邻两个账号之间的最小间隔
+     * @param tickInterval 调度周期，用于给窗口留出余量
+     * @param retryDelay   失败后的重试间隔
+     */
+    public SubscriptionRefreshPlanner(Clock clock, Random random, Duration window, Duration minGap,
+                                      Duration tickInterval, Duration retryDelay) {
+        if (window.isZero() || window.isNegative())
+            throw new IllegalArgumentException("刷新窗口必须为正数");
+        if (minGap.isNegative())
+            throw new IllegalArgumentException("最小间隔不能为负数");
+        if (tickInterval.isNegative())
+            throw new IllegalArgumentException("调度周期不能为负数");
+        if (retryDelay.isZero() || retryDelay.isNegative())
+            throw new IllegalArgumentException("重试间隔必须为正数");
+        if (retryDelay.compareTo(window) > 0)
+            throw new IllegalArgumentException("重试间隔不能大于刷新窗口，否则无法保证窗口内重试");
+        this.clock = clock;
+        this.random = random;
+        this.window = window;
+        this.minGap = minGap;
+        this.tickInterval = tickInterval;
+        this.retryDelay = retryDelay;
+    }
+
+    /** 便捷构造：重试间隔默认取 1 小时。 */
+    public SubscriptionRefreshPlanner(Clock clock, Random random, Duration window, Duration minGap,
+                                      Duration tickInterval) {
+        this(clock, random, window, minGap, tickInterval, Duration.ofHours(1));
+    }
+
+    /**
+     * 账号数与最小间隔是否放得下。
+     *
+     * <p>注意这里刻意只用于「提示」而不是阻断启动：账号数是由用户在管理页决定的，
+     * 若因为它超限就让整个应用起不来，等于把配置细节变成一次线上故障。
+     * 放不下时 {@link #initialSchedule} 仍会把账号铺满整个窗口（只是间隔小于期望值），
+     * 结果是错峰效果变弱，而不是退回串行爆发。
+     */
+    public boolean isCapacitySufficient(int accountCount) {
+        if (accountCount <= 1)
+            return true;
+        return minGap.toMillis() * (accountCount - 1) <= window.toMillis();
+    }
+
+    /** 容量不足时的告警文案，供调用方记录日志。 */
+    public String capacityMessage(int accountCount) {
+        long required = minGap.toMillis() * (accountCount - 1);
+        return String.format(
+                "刷新窗口放不下最小间隔：账号 %d 个、最小间隔 %d 分钟，需要 %d 分钟，但窗口只有 %d 分钟；"
+                        + "实际仍会铺满窗口，只是账号间间隔会小于期望值。可调小 subscription.refresh.min-gap-minutes。",
+                accountCount, minGap.toMinutes(),
+                Duration.ofMillis(required).toMinutes(), window.toMinutes());
+    }
+
+    /**
+     * 为一批「已成功刷新过」的账号铺开计划，返回顺序与 accountIds 一致。
+     *
+     * <p>已成功过的账号内容仍然可用，因此可以安心分散到整个窗口，
+     * 不会因为排在 20 小时后而让用户拿不到订阅。
+     */
+    public List<Long> initialSchedule(List<Integer> accountIds) {
+        List<Long> result = new ArrayList<>(accountIds.size());
+        if (accountIds.isEmpty())
+            return result;
+
+        long now = clock.millis();
+        long windowMillis = window.toMillis();
+        int count = accountIds.size();
+        long slotWidth = windowMillis / count;
+        long jitterCap = Math.max(1, Math.min(slotWidth, Math.max(1, slotWidth - minGap.toMillis())));
+
+        List<Integer> slots = new ArrayList<>(count);
+        for (int i = 0; i < count; i++)
+            slots.add(i);
+        Collections.shuffle(slots, random);
+
+        long[] planned = new long[count];
+        for (int accountIndex = 0; accountIndex < count; accountIndex++) {
+            long offset = slots.get(accountIndex) * slotWidth + (long) (random.nextDouble() * jitterCap);
+            planned[accountIndex] = now + Math.min(offset, windowMillis - 1);
+        }
+        for (int i = 0; i < count; i++)
+            result.add(planned[i]);
+        return result;
+    }
+
+    /**
+     * 为尚未成功过的账号排程：尽快刷，但互相错开。
+     *
+     * <p>这类账号（新建、或上游 key 刚改过）可能根本没有可用缓存，用户立刻请求订阅
+     * 就会拿不到内容，因此不能像常规账号那样分散到整个窗口。这里把它们按
+     * {@code spacing} 依次排开，配合调度器的单轮上限逐批刷新，
+     * 既尽早补齐，又避免一批新账号同时打上游。
+     *
+     * @param accountIds 账号 ID，顺序即刷新优先级
+     * @param spacing    相邻两个账号的间隔（通常取一个 tick）
+     */
+    public List<Long> coldStartSchedule(List<Integer> accountIds, Duration spacing) {
+        List<Long> result = new ArrayList<>(accountIds.size());
+        long now = clock.millis();
+        long step = Math.max(1, spacing.toMillis());
+        for (int i = 0; i < accountIds.size(); i++)
+            result.add(now + i * step);
+        return result;
+    }
+
+    /**
+     * 已排定的时刻是否已到期。
+     *
+     * <p>直接以排定时刻为准，这样分散效果与失败退避都得以保持。
+     * 只额外兜住一种异常：计划被写到超过一个窗口之后。这不可能是本调度器产生的
+     * 排程（成功时排在窗口减一个 tick 之后，失败时排在 4 小时以内），
+     * 按「计划损坏」处理并立即到期，从而保证 24 小时内必定刷新。
+     *
+     * <p>尚未排程（{@code scheduled == null}）视为立即到期，由调用方先行铺开计划。
+     */
+    public boolean isDue(Long scheduled, long now) {
+        if (scheduled == null)
+            return true;
+        if (scheduled - now > window.toMillis())
+            return true;
+        return scheduled <= now;
+    }
+
+    /**
+     * 成功之后的下一次刷新时刻。
+     *
+     * <p>只推进「窗口 - 一个调度周期」，使 tick 即使晚触发也不会突破 24 小时；
+     * 从上次成功的时刻起算，保证相邻两次的间隔严格小于窗口。
+     */
+    public long nextAfterSuccess(long successMillis) {
+        long advance = Math.max(1, window.minus(tickInterval).toMillis());
+        return successMillis + advance;
+    }
+
+    /**
+     * 失败之后的重试时刻。
+     *
+     * <p>用固定的重试间隔而不是「失败次数 × 指数退避」：刷新成功会清空 {@code last_error}，
+     * 数据库里没有「连续失败次数」这一栏，退避指数实际上只能取到 0 或 1，
+     * 写出来会让人误以为有指数退避而其实没有。固定的重试间隔行为可预期，
+     * 且远小于窗口，不会威胁「24 小时内尝试刷新一次」。
+     *
+     * <p>唯一需要裁剪的情况：若「上次成功 + 窗口」还没到，则重试不得晚于它；
+     * 已经越过该点时保留重试时刻本身——重复请求并不会提高成功率，
+     * 反过来在每个 tick 重打上游才是真正的问题，这种情况交由陈旧告警处理。
+     *
+     * @param now         当前时刻
+     * @param lastSuccess 上次成功时刻；未知时传 null，不做裁剪
+     */
+    public long nextAfterFailure(long now, Long lastSuccess) {
+        long candidate = now + retryDelay.toMillis();
+        if (lastSuccess == null)
+            return candidate;
+        long deadline = lastSuccess + window.toMillis();
+        return deadline > now ? Math.min(candidate, deadline) : candidate;
+    }
+
+    /** 是否已越过兜底线（距上次成功已达一个窗口），用于诊断与告警判定。 */
+    public boolean isOverdue(Long lastSuccess, long now) {
+        return lastSuccess != null && now - lastSuccess >= window.toMillis();
+    }
+
+    private long now() {
+        return clock.millis();
+    }
+
+    public Clock clock() {
+        return clock;
+    }
+
+    public Duration window() {
+        return window;
+    }
+
+    public Duration minGap() {
+        return minGap;
+    }
+
+    public Duration tickInterval() {
+        return tickInterval;
+    }
+}

src/main/java/com/lion/lionwebsite/Service/SubscriptionRefreshScheduler.java

@@ -0,0 +1,247 @@
+package com.lion.lionwebsite.Service;
+
+import com.lion.lionwebsite.Dao.normal.SubMapper;
+import com.lion.lionwebsite.Domain.SubscriptionAccount;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+/**
+ * 分散刷新各子账号的订阅。
+ *
+ * <p>取代原先「每 24 小时一次全量」的调度。旧写法有两个问题：所有账号在十几秒内
+ * 背靠背打完，且 {@code @Scheduled(fixedRate = 86400000)} 没有 initialDelay，
+ * 首次触发即立刻执行——于是每次重启都会重刷一遍全部账号，上游看到的请求密度取决于
+ * 部署频率，而不是每天一次。
+ *
+ * <p>现在改为高频轻量 tick，每轮只刷新已经到期的账号。「24 小时内每个账号至少
+ * 更新一次」由三层保证：
+ * <ol>
+ *   <li>成功后排定「成功时刻 + 窗口 - 一个 tick」，相位自我维持，分散效果不会因
+ *       重启或重排而退化；</li>
+ *   <li>到期时刻存在数据库里，停机期间错过计划的账号在恢复后立即到期；</li>
+ *   <li>兜底闸：任何排定时刻都被裁剪到「上次成功 + 窗口」以内，越线即立刻刷新。</li>
+ * </ol>
+ */
+@Service
+@Slf4j
+public class SubscriptionRefreshScheduler {
+
+    private final SubMapper subMapper;
+    private final SubscriptionRefreshService refreshService;
+    private final SubscriptionRefreshPlanner planner;
+    private final PushService pushService;
+    private final RemoteService remoteService;
+
+    /** 单个 tick 最多刷新几个账号，避免重启后一批到期账号同时开火。 */
+    @Value("${subscription.refresh.max-per-tick:2}")
+    int maxPerTick;
+
+    /** 超过窗口的这个倍数仍未成功即告警，避免静默失败。 */
+    @Value("${subscription.refresh.stale-alert-multiplier:2.0}")
+    double staleAlertMultiplier;
+
+    /** 已告警过的账号，避免每轮重复推送；刷新成功后移除。 */
+    private final Set<Integer> alertedAccounts = new HashSet<>();
+
+    public SubscriptionRefreshScheduler(SubMapper subMapper,
+                                        SubscriptionRefreshService refreshService,
+                                        SubscriptionRefreshPlanner planner,
+                                        PushService pushService,
+                                        RemoteService remoteService) {
+        this.subMapper = subMapper;
+        this.refreshService = refreshService;
+        this.planner = planner;
+        this.pushService = pushService;
+        this.remoteService = remoteService;
+    }
+
+    /**
+     * 轻量 tick：只处理已到期的账号，且单轮有数量上限。
+     *
+     * <p>用 fixedDelay 而非 fixedRate，一轮结束再计下一轮，避免上一轮没跑完就叠加触发；
+     * initialDelay 让重启后的第一轮稍晚开始，先让应用完成启动。
+     */
+    @Scheduled(fixedDelayString = "${subscription.refresh.tick-interval-ms:300000}",
+            initialDelayString = "${subscription.refresh.initial-delay-ms:120000}")
+    public void tick() {
+        try {
+            refreshDueAccounts();
+        } catch (Exception e) {
+            // 调度方法抛出异常会导致后续触发被取消，这里必须兜住。
+            log.error("订阅分散刷新 tick 失败", e);
+        }
+    }
+
+    /**
+     * 刷新当前已到期的账号。
+     *
+     * @return 本轮实际刷新的账号数
+     */
+    public int refreshDueAccounts() {
+        List<SubscriptionAccount> enabled = enabledAccounts();
+        ensureScheduled(enabled);
+
+        long now = planner.clock().millis();
+        int refreshed = 0;
+        for (SubscriptionAccount account : enabled) {
+            if (refreshed >= maxPerTick)
+                break;
+            if (!isDue(account, now))
+                continue;
+            refreshOne(account, now);
+            refreshed++;
+        }
+        reportStale(enabled, now);
+        // 缓存内容变了就要让备机同步。原先全量刷新后由调用方跟一次同步，
+        // 改为分散刷新后必须在这里补上，否则备机要等到下一次周期同步才拿到新内容。
+        if (refreshed > 0)
+            remoteService.requestSubscriptionSync();
+        return refreshed;
+    }
+
+    /**
+     * 手动刷新入口：立即刷新全部启用账号。
+     *
+     * <p>刻意不受 {@code maxPerTick} 限制——管理页「更新订阅」的语义就是立刻全部刷新。
+     * 但成功后同样要重排各自的下一次时刻，否则刚手动刷完会让当天的计划作废，
+     * 该账号反而可能超过 24 小时没有下次更新。
+     */
+    public boolean refreshAllNow() {
+        boolean success = true;
+        long now = planner.clock().millis();
+        for (SubscriptionAccount account : enabledAccounts()) {
+            if (!refreshOne(account, now))
+                success = false;
+        }
+        return success;
+    }
+
+    private List<SubscriptionAccount> enabledAccounts() {
+        return subMapper.selectAllSubscriptionAccounts().stream()
+                .filter(SubscriptionAccount::isEnabled)
+                .sorted(Comparator.comparing(SubscriptionAccount::getId))
+                .toList();
+    }
+
+    /** 刷新单个账号并按结果重排下一次时刻。 */
+    private boolean refreshOne(SubscriptionAccount account, long now) {
+        boolean ok = refreshService.refresh(account.getId());
+        if (ok) {
+            long next = planner.nextAfterSuccess(planner.clock().millis());
+            subMapper.updateNextRefreshAt(account.getId(), next);
+            alertedAccounts.remove(account.getId());
+            log.info("订阅刷新成功 accountId={} 下次刷新={}", account.getId(), next);
+        } else {
+            long next = planner.nextAfterFailure(now, account.getLastSuccessEpoch());
+            subMapper.updateNextRefreshAt(account.getId(), next);
+            log.warn("订阅刷新失败 accountId={} 下次重试={}", account.getId(), next);
+        }
+        return ok;
+    }
+
+    /**
+     * 账号是否到期。
+     *
+     * <p>以排定时刻为准；尚未排程或计划明显损坏（超出窗口）时视为立即到期，
+     * 由 {@link #ensureScheduled} 先铺开或纠正。
+     */
+    private boolean isDue(SubscriptionAccount account, long now) {
+        return planner.isDue(account.getNextRefreshAt(), now);
+    }
+
+    /**
+     * 为尚无计划的账号补齐计划。
+     *
+     * <p>按紧迫性分三类，因为它们对「排到多晚」的容忍度不同：
+     * <ul>
+     *   <li><b>从未成功过</b>（新建账号、刚改过上游 key）：可能还没有可用缓存，
+     *       用户此时请求订阅会拿不到内容，因此尽快刷，只按 tick 间隔互相错开；</li>
+     *   <li><b>已成功过但已超期</b>（距上次成功已达一个窗口）：保证即将失效，
+     *       必须立即刷新，不能排到窗口内更晚的位置；</li>
+     *   <li><b>已成功过且未超期</b>：缓存仍可分发，按窗口分散即可，不必挤在一起。</li>
+     * </ul>
+     */
+    private void ensureScheduled(List<SubscriptionAccount> enabled) {
+        long now = planner.clock().millis();
+        List<SubscriptionAccount> cold = new ArrayList<>();
+        List<SubscriptionAccount> overdue = new ArrayList<>();
+        List<SubscriptionAccount> warm = new ArrayList<>();
+        for (SubscriptionAccount account : enabled) {
+            if (account.getNextRefreshAt() != null)
+                continue;
+            if (account.getLastSuccessEpoch() == null)
+                cold.add(account);
+            else if (planner.isOverdue(account.getLastSuccessEpoch(), now))
+                overdue.add(account);
+            else
+                warm.add(account);
+        }
+        if (cold.isEmpty() && overdue.isEmpty() && warm.isEmpty())
+            return;
+
+        if (!planner.isCapacitySufficient(enabled.size()))
+            log.warn("{}", planner.capacityMessage(enabled.size()));
+
+        // 超期账号立即到期（计划设为当前时刻），本轮就会被刷新。
+        for (SubscriptionAccount account : overdue)
+            schedule(account, now);
+
+        int index = 0;
+        List<Long> coldPlan = planner.coldStartSchedule(
+                cold.stream().map(SubscriptionAccount::getId).toList(), planner.tickInterval());
+        for (SubscriptionAccount account : cold)
+            schedule(account, coldPlan.get(index++));
+
+        List<Integer> warmIds = warm.stream().map(SubscriptionAccount::getId).toList();
+        List<Long> warmPlan = planner.initialSchedule(warmIds);
+        for (int i = 0; i < warm.size(); i++)
+            schedule(warm.get(i), warmPlan.get(i));
+    }
+
+    /**
+     * 写入新计划，并同步更新内存中的对象。
+     *
+     * <p>必须同时更新内存副本：否则刚被排到几小时后的账号在本轮仍带着
+     * {@code nextRefreshAt == null}，会被 {@link #isDue} 判为立即到期并当场刷新，
+     * 于是「铺开」在第一个 tick 就失效了（迁移后首批账号会全部集中刷新）。
+     */
+    private void schedule(SubscriptionAccount account, long nextRefreshAt) {
+        subMapper.updateNextRefreshAt(account.getId(), nextRefreshAt);
+        account.setNextRefreshAt(nextRefreshAt);
+    }
+
+    /** 陈旧账号告警：同一账号在连续陈旧期间只推一次，刷新成功后重置。 */
+    private void reportStale(List<SubscriptionAccount> enabled, long now) {
+        long threshold = (long) (planner.window().toMillis() * staleAlertMultiplier);
+        for (SubscriptionAccount account : enabled) {
+            Long lastSuccess = account.getLastSuccessEpoch();
+            if (lastSuccess == null || now - lastSuccess < threshold)
+                continue;
+            if (!alertedAccounts.add(account.getId()))
+                continue;
+            long hours = (now - lastSuccess) / 3_600_000L;
+            String message = String.format("订阅账号 %d（%s）已 %d 小时未成功刷新，最近错误：%s",
+                    account.getId(), account.getName(), hours,
+                    account.getLastError() == null ? "无" : account.getLastError());
+            log.error("{}", message);
+            pushService.sendToMe(message);
+        }
+        // 已删除或停用的账号不再保留告警状态，避免集合无限增长。
+        Set<Integer> alive = new HashSet<>();
+        for (SubscriptionAccount account : enabled)
+            alive.add(account.getId());
+        alertedAccounts.retainAll(alive);
+    }
+
+    SubscriptionRefreshPlanner planner() {
+        return planner;
+    }
+}

src/main/java/com/lion/lionwebsite/Service/SubscriptionRefreshService.java

@@ -0,0 +1,242 @@
+package com.lion.lionwebsite.Service;
+
+import com.lion.lionwebsite.Dao.normal.SubMapper;
+import com.lion.lionwebsite.Domain.SubscriptionAccount;
+import com.lion.lionwebsite.Util.ClashSubscriptionParser;
+import com.lion.lionwebsite.Util.SubscriptionClientProfile;
+import com.lion.lionwebsite.Util.SubscriptionCacheStore;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.hc.client5.http.classic.methods.HttpGet;
+import org.apache.hc.client5.http.config.RequestConfig;
+import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
+import org.apache.hc.client5.http.impl.classic.CloseableHttpResponse;
+import org.apache.hc.client5.http.impl.classic.HttpClients;
+import org.apache.hc.core5.http.HttpEntity;
+import org.apache.hc.core5.util.Timeout;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Service;
+
+import java.io.*;
+import java.net.URLDecoder;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.*;
+import java.time.Clock;
+import java.util.*;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.concurrent.locks.Lock;
+
+@Service
+@Slf4j
+@RequiredArgsConstructor
+public class SubscriptionRefreshService {
+    private static final CloseableHttpClient HTTP_CLIENT = HttpClients.custom()
+            .setDefaultRequestConfig(RequestConfig.custom()
+                    .setConnectTimeout(Timeout.ofMilliseconds(5_000))
+                    .setConnectionRequestTimeout(Timeout.ofMilliseconds(5_000))
+                    // HttpClient 5 将 socket 读超时改名为 responseTimeout。
+                    .setResponseTimeout(Timeout.ofMilliseconds(15_000)).build())
+            .build();
+    private static final Pattern MULTIPLIER = Pattern.compile("(\\d+(?:\\.\\d+)?)x\\s*$", Pattern.CASE_INSENSITIVE);
+
+    final SubMapper subMapper;
+
+    final SubscriptionStateCoordinator stateCoordinator;
+
+    @Value("${subscription.upstream.v2-url-template}")
+    String v2UrlTemplate;
+
+    @Value("${subscription.upstream.clash-url-template}")
+    String clashUrlTemplate;
+
+    @Value("${subscription.upstream.high-multiplier-threshold:2.0}")
+    double highMultiplierThreshold;
+
+    @Value("${subscription.cache-root:sub/accounts}")
+    String cacheRoot;
+
+    /** 时间源，测试可替换以固定成功时刻。 */
+    Clock clock = Clock.systemDefaultZone();
+
+    /**
+     * 分代缓存存储。默认按 {@link #cacheRoot} 懒构造；测试可覆写为受控子类来模拟写入失败。
+     * 保持为普通字段而不是构造参数，是为了不改动既有两参构造器（Spring 与老测试都在用）。
+     */
+    SubscriptionCacheStore cacheStore;
+
+    private long refreshSequence;
+    // Accessed only while holding the coordinator write lock.
+    private final Map<Integer, Long> latestRefresh = new HashMap<>();
+
+    public boolean refresh(Integer accountId) {
+        Lock stateLock = stateCoordinator.writeLock();
+        SubscriptionAccount account;
+        long version;
+        stateLock.lock();
+        try {
+            account = subMapper.selectSubscriptionAccount(accountId);
+            if (account == null || !account.isEnabled())
+                return false;
+            version = ++refreshSequence;
+            latestRefresh.put(accountId, version);
+        } finally {
+            stateLock.unlock();
+        }
+
+        // Network access and parsing never hold the shared subscription lock.
+        try {
+            boolean filter = account.isFilterHighMultiplier();
+            String v2 = processV2(firstLine(download(v2Url(account), SubscriptionClientProfile.forAccount(accountId, false))),
+                    filter, highMultiplierThreshold);
+            // 按 YAML 语义过滤高倍节点并同步清理 proxy-groups 引用，不再靠行缩进猜测。
+            String clash = ClashSubscriptionParser.transform(
+                    download(clashUrl(account), SubscriptionClientProfile.forAccount(accountId, true)),
+                    filter, highMultiplierThreshold);
+            stateLock.lock();
+            try {
+                if (!isCurrent(account, version))
+                    return false;
+                // 两份内容写进同一分代，校验通过后指针最后发布：任一步失败都保留上次完整版本。
+                store().publish(accountId, v2.getBytes(StandardCharsets.UTF_8), clash.getBytes(StandardCharsets.UTF_8));
+                subMapper.markSubscriptionRefreshSuccess(accountId, clock.millis());
+                return true;
+            } finally {
+                stateLock.unlock();
+            }
+        } catch (Exception e) {
+            stateLock.lock();
+            try {
+                if (isCurrent(account, version)) {
+                    String message = e.getMessage() == null ? e.getClass().getSimpleName() : e.getMessage();
+                    subMapper.markSubscriptionRefreshFailure(accountId, message.length() > 500 ? message.substring(0, 500) : message);
+                }
+            } finally {
+                stateLock.unlock();
+            }
+            log.warn("刷新子账号订阅失败 accountId={} errorType={}", accountId, e.getClass().getSimpleName());
+            return false;
+        }
+    }
+
+    private boolean isCurrent(SubscriptionAccount expected, long version) {
+        SubscriptionAccount current = subMapper.selectSubscriptionAccount(expected.getId());
+        return Objects.equals(latestRefresh.get(expected.getId()), version)
+                && current != null && current.isEnabled()
+                && Objects.equals(current.getUpstreamKey(), expected.getUpstreamKey())
+                && current.isFilterHighMultiplier() == expected.isFilterHighMultiplier();
+    }
+
+    public String v2Url(SubscriptionAccount account) {
+        return applyTemplate(v2UrlTemplate, account.getUpstreamKey());
+    }
+
+    public String clashUrl(SubscriptionAccount account) {
+        return applyTemplate(clashUrlTemplate, account.getUpstreamKey());
+    }
+
+    private String applyTemplate(String template, String key) {
+        if (template == null || template.indexOf("{key}") < 0 || template.indexOf("{key}") != template.lastIndexOf("{key}"))
+            throw new IllegalStateException("订阅 URL 模板必须包含且只能包含一个 {key}");
+        return template.replace("{key}", java.net.URLEncoder.encode(key, StandardCharsets.UTF_8));
+    }
+
+    private static String firstLine(List<String> lines) {
+        if (lines.isEmpty())
+            throw new IllegalStateException("V2Ray 上游返回为空");
+        return lines.getFirst().trim();
+    }
+
+    private static String processV2(String encoded, boolean filter, double threshold) {
+        byte[] decoded;
+        try {
+            decoded = Base64.getMimeDecoder().decode(encoded);
+        } catch (IllegalArgumentException e) {
+            throw new IllegalStateException("V2Ray 上游不是有效 Base64");
+        }
+        StringBuilder kept = new StringBuilder();
+        for (String node : new String(decoded, StandardCharsets.UTF_8).split("\\R")) {
+            if (node.isBlank())
+                continue;
+            if (!filter || !isHigh(nodeName(node), threshold))
+                kept.append(node).append('\n');
+        }
+        return Base64.getEncoder().encodeToString(kept.toString().getBytes(StandardCharsets.UTF_8));
+    }
+
+    private static String nodeName(String node) {
+        int hash = node.lastIndexOf('#');
+        if (hash < 0 || hash == node.length() - 1)
+            return "";
+        return URLDecoder.decode(node.substring(hash + 1), StandardCharsets.UTF_8);
+    }
+
+    private static boolean isHigh(String name, double threshold) {
+        Matcher matcher = MULTIPLIER.matcher(name);
+        return matcher.find() && Double.parseDouble(matcher.group(1)) > threshold;
+    }
+
+    /**
+     * 下载上游订阅正文。
+     *
+     * @param profile 要伪装的客户端身份；为 null 时保留 HttpClient 默认头（仅测试使用）。
+     *                生产路径必须传入，否则上游会看到 {@code Apache-HttpClient/... (Java/...)}。
+     */
+    List<String> download(String url, SubscriptionClientProfile profile) throws IOException {
+        HttpGet get = new HttpGet(url);
+        if (profile != null) {
+            get.addHeader("User-Agent", profile.userAgent());
+            get.addHeader("Accept", profile.accept());
+            get.addHeader("Accept-Language", profile.acceptLanguage());
+            // 实测：显式设置 Accept-Encoding 不会破坏 HttpClient5 的透明解压，
+            // ContentCompressionExec 仍按 Content-Encoding 正确解码。
+            get.addHeader("Accept-Encoding", "gzip, deflate");
+            // 订阅客户端是长连接复用，且不会发送 Referer。
+            get.addHeader("Connection", "keep-alive");
+        }
+        try (CloseableHttpResponse response = HTTP_CLIENT.execute(get)) {
+            if (response.getCode() != 200)
+                throw new IOException("上游 HTTP 状态码 " + response.getCode());
+            HttpEntity entity = response.getEntity();
+            if (entity == null)
+                throw new IOException("上游返回为空");
+            List<String> lines = new ArrayList<>();
+            try (BufferedReader reader = new BufferedReader(new InputStreamReader(entity.getContent(), StandardCharsets.UTF_8))) {
+                String line;
+                while ((line = reader.readLine()) != null)
+                    lines.add(line);
+            }
+            return lines;
+        }
+    }
+
+    /**
+     * 当前应分发的缓存文件。只在一整个版本有效时返回真实路径；否则返回一个保证不存在的
+     * 哨兵路径，使分发端按「订阅暂不可用」处理，而不是发出半份旧缓存。
+     */
+    public Path cachedPath(Integer accountId, String client) {
+        SubscriptionCacheStore store = store();
+        return store.resolve(accountId, client).orElseGet(() -> store.unavailablePath(accountId, client));
+    }
+
+    public boolean hasCompleteCache(Integer accountId) {
+        return store().hasComplete(accountId);
+    }
+
+    public void invalidateCache(Integer accountId) {
+        Lock stateLock = stateCoordinator.writeLock();
+        stateLock.lock();
+        try {
+            latestRefresh.remove(accountId); // In-flight responses must not restore invalidated content.
+            store().invalidate(accountId);
+        } finally {
+            stateLock.unlock();
+        }
+    }
+
+    private synchronized SubscriptionCacheStore store() {
+        if (cacheStore == null)
+            cacheStore = new SubscriptionCacheStore(cacheRoot);
+        return cacheStore;
+    }
+}

src/main/java/com/lion/lionwebsite/Service/SubscriptionStandbySnapshotService.java

@@ -0,0 +1,153 @@
+package com.lion.lionwebsite.Service;
+
+import tools.jackson.databind.ObjectMapper;
+import com.lion.lionwebsite.Dao.normal.SubMapper;
+import com.lion.lionwebsite.Domain.SubBind;
+import com.lion.lionwebsite.Domain.SubscriptionAccount;
+import com.lion.lionwebsite.Message.*;
+import com.lion.lionwebsite.Util.CustomUtil;
+import com.lion.lionwebsite.Util.SubscriptionCacheStore;
+import lombok.RequiredArgsConstructor;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import jakarta.annotation.PostConstruct;
+
+import javax.crypto.Mac;
+import javax.crypto.spec.SecretKeySpec;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.util.*;
+import java.util.zip.GZIPOutputStream;
+import java.util.concurrent.locks.Lock;
+
+@Service
+@RequiredArgsConstructor
+public class SubscriptionStandbySnapshotService {
+    private final SubMapper subMapper;
+    private final SubscriptionStateCoordinator stateCoordinator;
+    private final ObjectMapper objectMapper = CustomUtil.objectMapper;
+
+    @Autowired(required = false)
+    SubscriptionEventService subscriptionEvents;
+
+    @Value("${subscription.standby.sync-secret:}")
+    String syncSecret;
+
+    @Value("${subscription.standby.sync-enabled:false}")
+    boolean syncEnabled;
+
+    @Value("${subscription.cache-root:sub/accounts}")
+    String cacheRoot;
+
+    /**
+     * 与 {@link SubscriptionRefreshService} 共用的分代缓存解析器。
+     * 测试可直接覆写；未设置时按 {@link #cacheRoot} 懒构造。
+     */
+    SubscriptionCacheStore cacheStore;
+
+    @PostConstruct
+    void validateConfiguration() {
+        if (syncEnabled && (syncSecret == null || syncSecret.isBlank()))
+            throw new IllegalStateException("启用订阅备机同步时必须配置 SUBSCRIPTION_SYNC_SECRET");
+    }
+
+    public SubscriptionSnapshotMessage build() throws IOException {
+        Lock stateLock = stateCoordinator.readLock();
+        stateLock.lock();
+        try {
+        Map<Integer, SubscriptionAccountSnapshot> accountMap = new HashMap<>();
+        for (SubscriptionAccount account : subMapper.selectAllSubscriptionAccounts()) {
+            if (!account.isEnabled())
+                continue;
+            // 从同一分代读出成对内容，保证快照里两份文件同版本；无完整版本则跳过该账号。
+            Optional<SubscriptionCacheStore.Pair> pair = store().read(account.getId());
+            if (pair.isEmpty())
+                continue;
+            byte[] v2 = pair.get().v2();
+            byte[] clash = pair.get().clash();
+            SubscriptionAccountSnapshot snapshot = new SubscriptionAccountSnapshot();
+            snapshot.setAccountId(account.getId());
+            snapshot.setEnabled(true);
+            snapshot.setFilterHighMultiplier(account.isFilterHighMultiplier());
+            snapshot.setV2ContentBase64(Base64.getEncoder().encodeToString(v2));
+            snapshot.setV2Sha256(sha256(v2));
+            snapshot.setClashContentBase64(Base64.getEncoder().encodeToString(clash));
+            snapshot.setClashSha256(sha256(clash));
+            accountMap.put(account.getId(), snapshot);
+        }
+
+        List<SubscriptionAccountSnapshot> accounts = new ArrayList<>(accountMap.values());
+        accounts.sort(Comparator.comparing(SubscriptionAccountSnapshot::getAccountId));
+        List<SubscriptionBindingSnapshot> bindings = new ArrayList<>();
+        List<SubBind> currentBindings = subMapper.selectAllSubBind();
+        if (subscriptionEvents != null) subscriptionEvents.rememberBindings(currentBindings);
+        for (SubBind bind : currentBindings) {
+            if (bind.getSubscriptionAccountId() == null || !accountMap.containsKey(bind.getSubscriptionAccountId()))
+                continue;
+            SubscriptionBindingSnapshot snapshot = new SubscriptionBindingSnapshot();
+            snapshot.setPublicKeySha256(sha256(bind.getKey().getBytes(StandardCharsets.UTF_8)));
+            snapshot.setAccountId(bind.getSubscriptionAccountId());
+            bindings.add(snapshot);
+        }
+        bindings.sort(Comparator.comparing(SubscriptionBindingSnapshot::getPublicKeySha256));
+
+        SubscriptionSnapshotPayload payload = new SubscriptionSnapshotPayload();
+        payload.setSchemaVersion(1);
+        payload.setAccounts(accounts);
+        payload.setBindings(bindings);
+        byte[] payloadJson = objectMapper.writeValueAsBytes(payload);
+        byte[] compressed = gzip(payloadJson);
+        String revision = sha256(payloadJson);
+        String payloadSha256 = sha256(compressed);
+        long generatedAt = System.currentTimeMillis();
+        String signatureInput = "1\n" + revision + "\n" + generatedAt + "\n" + payloadSha256;
+
+        SubscriptionSnapshotMessage message = new SubscriptionSnapshotMessage();
+        message.setSchemaVersion(1);
+        message.setRevision(revision);
+        message.setGeneratedAt(generatedAt);
+        message.setPayloadBase64(Base64.getEncoder().encodeToString(compressed));
+        message.setPayloadSha256(payloadSha256);
+        message.setSignature(hmac(signatureInput.getBytes(StandardCharsets.UTF_8)));
+        return message;
+        } finally {
+            stateLock.unlock();
+        }
+    }
+
+    private String hmac(byte[] input) {
+        if (syncSecret == null || syncSecret.isBlank())
+            throw new IllegalStateException("订阅备机同步密钥未配置");
+        try {
+            Mac mac = Mac.getInstance("HmacSHA256");
+            mac.init(new SecretKeySpec(syncSecret.getBytes(StandardCharsets.UTF_8), "HmacSHA256"));
+            return hex(mac.doFinal(input));
+        } catch (Exception e) {
+            throw new IllegalStateException("生成订阅快照签名失败", e);
+        }
+    }
+
+    private static byte[] gzip(byte[] input) throws IOException {
+        ByteArrayOutputStream output = new ByteArrayOutputStream();
+        try (GZIPOutputStream gzip = new GZIPOutputStream(output)) {
+            gzip.write(input);
+        }
+        return output.toByteArray();
+    }
+
+    private static String sha256(byte[] input) {
+        try { return hex(MessageDigest.getInstance("SHA-256").digest(input)); }
+        catch (Exception e) { throw new IllegalStateException(e); }
+    }
+
+    private static String hex(byte[] input) { return HexFormat.of().formatHex(input); }
+
+    private synchronized SubscriptionCacheStore store() {
+        if (cacheStore == null)
+            cacheStore = new SubscriptionCacheStore(cacheRoot);
+        return cacheStore;
+    }
+}

src/main/java/com/lion/lionwebsite/Service/SubscriptionStateCoordinator.java

@@ -0,0 +1,20 @@
+package com.lion.lionwebsite.Service;
+
+import org.springframework.stereotype.Component;
+
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantReadWriteLock;
+
+/** Coordinates database bindings and the two cache files as one subscription state. */
+@Component
+public final class SubscriptionStateCoordinator {
+    private final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
+
+    public Lock readLock() {
+        return lock.readLock();
+    }
+
+    public Lock writeLock() {
+        return lock.writeLock();
+    }
+}

src/main/java/com/lion/lionwebsite/Service/TaskProtocol.java

@@ -0,0 +1,23 @@
+package com.lion.lionwebsite.Service;
+
+import java.util.UUID;
+
+/** 协议 v2 的操作 ID 生成与解析。稳定 ID 是「节点重发/重试不重复执行副作用」的依据。 */
+public final class TaskProtocol {
+
+    private TaskProtocol() {
+    }
+
+    /** 生成一个新的稳定操作 ID（下载或删除），形如 {@code op-<uuid>}。 */
+    public static String newOperationId(String action) {
+        return action + "-" + UUID.randomUUID();
+    }
+
+    public static String newDownloadOperationId() {
+        return newOperationId("dl");
+    }
+
+    public static String newDeleteOperationId() {
+        return newOperationId("del");
+    }
+}

src/main/java/com/lion/lionwebsite/Service/TaskReportHandler.java

@@ -0,0 +1,37 @@
+package com.lion.lionwebsite.Service;
+
+import com.lion.lionwebsite.Domain.Gallery;
+import com.lion.lionwebsite.Domain.GalleryTask;
+import com.lion.lionwebsite.Message.TaskReportMessage;
+
+import java.util.List;
+
+/**
+ * 协议 v2 状态上报的消费入口。
+ *
+ * <p>定义成接口是为了断开依赖环：RemoteService 需要把上报交给生命周期服务，
+ * 而生命周期服务需要有 RemoteService 才能下发命令。RemoteService 通过可选的 setter
+ * 注入本接口（见 {@code RemoteService#setTaskReportHandler}），因此构造期没有环。
+ */
+public interface TaskReportHandler {
+
+    /**
+     * 提交一份上报。
+     *
+     * @return 已成功提交（可回 ACK）时返回提交结果；数据库失败等「不可回 ACK」的情况返回 null。
+     *         返回 null 时节点会保留快照并稍后重投，这正是「失败写入不得清任务」的要求。
+     */
+    CommittedReport apply(TaskReportMessage report);
+
+    /**
+     * 已提交的结果。
+     *
+     * @param reportId       本次上报 ID（回执用）
+     * @param newlyCompleted 本次「首次」完成的任务，通知与 WebSocket 由独立执行器在事务之后处理，
+     *                       因此慢通知不会阻塞数据库消费线程；重复上报不会重复出现在这里
+     * @param acceptedTasks  事务内实际被接受的进度更新（含下载中/压缩中等中间状态，已排除过期、
+     *                       旧世代与待删除任务），WebSocket 只推这一批，避免前端看到被丢弃的迟到状态
+     */
+    record CommittedReport(String reportId, List<Gallery> newlyCompleted, List<GalleryTask> acceptedTasks) {
+    }
+}

src/main/java/com/lion/lionwebsite/Service/TaskStatus.java

@@ -0,0 +1,45 @@
+package com.lion.lionwebsite.Service;
+
+import com.lion.lionwebsite.Domain.GalleryTask;
+
+/**
+ * 任务业务状态码到展示文案的唯一映射点。
+ *
+ * <p>状态以稳定代码表达，中文文案只出现在展示层（WebSocket/列表），
+ * 避免把「失败/待重试/结果未知」塞进成功失败提示字符串。
+ */
+public final class TaskStatus {
+
+    public static final String SUBMITTED = "已提交";
+    /** 已登记创建意图、尚未确认上游提交；用于让任务列表在提交期间也能看到占位任务。 */
+    public static final String PENDING_SUBMIT = "提交中";
+    public static final String DOWNLOADING = "下载中";
+    public static final String WAITING_COMPRESS = "等待压缩";
+    public static final String COMPRESSING = "压缩中";
+    public static final String COMPLETE = "下载完成";
+    public static final String UNKNOWN = "提交未知";
+    public static final String DELETE_PENDING = "待删除";
+    public static final String DELETE_FAILED = "删除失败";
+
+    private TaskStatus() {
+    }
+
+    /**
+     * 节点上报的进度状态映射为业务文案；未知状态码返回 null，由调用方忽略。
+     *
+     * <p>GalleryTask 里的状态码是可变 static byte，不是编译期常量，因此不能用 switch case；
+     * 这里用整数比较，避免为改常量引入风险。
+     */
+    public static String fromReport(byte reportStatus) {
+        int status = reportStatus;
+        if (status == GalleryTask.DOWNLOADING)
+            return DOWNLOADING;
+        if (status == GalleryTask.DOWNLOAD_COMPLETE)
+            return WAITING_COMPRESS;
+        if (status == GalleryTask.COMPRESSING)
+            return COMPRESSING;
+        if (status == GalleryTask.COMPRESS_COMPLETE)
+            return COMPLETE;
+        return null;
+    }
+}

src/main/java/com/lion/lionwebsite/Service/UpstreamGateway.java

@@ -0,0 +1,47 @@
+package com.lion.lionwebsite.Service;
+
+import com.lion.lionwebsite.Domain.Gallery;
+import com.lion.lionwebsite.Exception.ResolutionNotMatchException;
+import com.lion.lionwebsite.Util.GalleryUtil;
+import com.lion.lionwebsite.Util.PreparedGallery;
+import org.springframework.stereotype.Component;
+
+import java.io.IOException;
+
+/**
+ * 上游图站的读写边界。
+ *
+ * <p>分成两步是协议 v2 的核心约束：
+ * <ol>
+ *   <li>{@link #prepare} 只做读取（页面、分辨率），绝不产生下载副作用；</li>
+ *   <li>调用方必须在持久化 SUBMITTING 之后才调用 {@link #submit}，因为那一步才真正 POST。</li>
+ * </ol>
+ *
+ * <p>拆成接口是为了让生命周期服务可以在测试里注入假实现，也方便后续把抓取/解析/提交
+ * 进一步分开；默认实现 {@link GalleryUtilAdapter} 直接转发到现有 GalleryUtil。
+ */
+public interface UpstreamGateway {
+
+    /** 只读解析：失败返回 null 表示链接无效或页面不可用，不产生任何副作用。 */
+    PreparedGallery prepare(String link) throws IOException;
+
+    /** 真正提交下载请求。抛异常表示结果未知，由调用方落 UNKNOWN，不做自动重发。 */
+    Gallery submit(PreparedGallery prepared, String targetResolution)
+            throws IOException, ResolutionNotMatchException;
+
+    /** 默认实现：转发现有 GalleryUtil 的拆分方法。 */
+    @Component
+    class GalleryUtilAdapter implements UpstreamGateway {
+
+        @Override
+        public PreparedGallery prepare(String link) throws IOException {
+            return GalleryUtil.prepare(link);
+        }
+
+        @Override
+        public Gallery submit(PreparedGallery prepared, String targetResolution)
+                throws IOException, ResolutionNotMatchException {
+            return GalleryUtil.submit(prepared, targetResolution);
+        }
+    }
+}

src/main/java/com/lion/lionwebsite/Service/UserService.java

@@ -3,16 +3,23 @@ package com.lion.lionwebsite.Service;
 import com.lion.lionwebsite.Dao.normal.CollectMapper;
 import com.lion.lionwebsite.Dao.normal.GalleryMapper;
 import com.lion.lionwebsite.Dao.normal.UserMapper;
+import com.lion.lionwebsite.Dao.normal.SubMapper;
 import com.lion.lionwebsite.Domain.User;
 import com.lion.lionwebsite.Interceptor.TaskHandlerInterceptor;
 import com.lion.lionwebsite.Util.CustomUtil;
 import com.lion.lionwebsite.Util.Response;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.transaction.support.TransactionTemplate;
 
 import java.util.ArrayList;
+import java.util.concurrent.locks.Lock;
+import java.util.function.Supplier;
+
+import static com.lion.lionwebsite.Util.CustomUtil.objectMapper;
 
 @Service
 @Slf4j
@@ -27,6 +34,11 @@ public class UserService{
 
     final TaskHandlerInterceptor taskHandlerInterceptor;
 
+    @Autowired SubMapper subMapper;
+    @Autowired SubscriptionStateCoordinator subscriptionState;
+    @Autowired RemoteService remoteService;
+    @Autowired @Qualifier("mainTransactionTemplate") TransactionTemplate transactions;
+
     public String addAuthCode(String targetAuthCode, String people) {
         Response response = Response.generateResponse();
 
@@ -65,12 +77,22 @@ public class UserService{
         Response response = Response.generateResponse();
 
         try{
-            if(userMapper.isExist(targetAuthCode) != 0){
+            return coordinated(() -> {
-                userMapper.updateUsername(targetAuthCode, newUsername);
+                if (userMapper.isExist(targetAuthCode) == 0)
-                response.success("修改成功");
+                    return response.failure("授权码不存在").toJSONString();
-            }else {
+                if (newUsername == null || newUsername.isBlank())
-                response.failure("授权码不存在");
+                    return response.failure("用户名不能为空").toJSONString();
-            }
+                String name = newUsername.trim();
+                User current = userMapper.selectUserByAuthCode(targetAuthCode);
+                User existing = userMapper.selectUserByUsername(name);
+                if (existing != null && (current == null || existing.getId() != current.getId()))
+                    return response.failure("用户名已存在").toJSONString();
+                userMapper.updateUsername(targetAuthCode, name);
+                if (subMapper != null && current != null)
+                    subMapper.renameBoundUser(current.getId(), current.getUsername(), name);
+                if (remoteService != null) remoteService.requestSubscriptionSync();
+                return response.success("修改成功").toJSONString();
+            });
         }catch (Exception e){
             log.error("修改用户名失败", e);
             response.failure("修改失败");
@@ -84,17 +106,22 @@ public class UserService{
 
         if(userMapper.isExist(targetAuthCode) != 0)
             try{
-                User user = userMapper.selectUserByAuthCode(targetAuthCode);
+                coordinated(() -> {
-
+                    User user = userMapper.selectUserByAuthCode(targetAuthCode);
-                //修改下载人以及取消收藏
+                    ArrayList<Integer> galleries = collectMapper.selectGidByCollector(user.getId());
-                ArrayList<Integer> galleries = collectMapper.selectGidByCollector(user.getId());
+                    for(Integer gallery: galleries)
-                for(Integer gallery: galleries)
+                        collectMapper.disCollect(gallery, user.getId());
-                    collectMapper.disCollect(gallery, user.getId());
+                    galleryMapper.updateGalleryDownloader(ADMIN_USER_ID, user.getId());
-                galleryMapper.updateGalleryDownloader(3, user.getId());
+                    if (subMapper != null) {
-
+                        subMapper.deleteSubUpdateRecord(user.getUsername());
-                userMapper.deleteUserByAuthCode(targetAuthCode);
+                        subMapper.deleteSubBind(user.getUsername());
+                    }
+                    userMapper.deleteUserByAuthCode(targetAuthCode);
+                    return "deleted";
+                });
                 response.success("删除成功");
                 taskHandlerInterceptor.updateAuthCodes();
+                if (remoteService != null) remoteService.requestSubscriptionSync();
             }catch (Exception e){
                 log.error("删除授权码失败", e);
                 response.failure("删除失败");
@@ -107,27 +134,29 @@ public class UserService{
     }
 
     public String alterStatus(String AuthCode, boolean isEnable){
-        Response response = Response.generateResponse();
+        try {
-
+            String result = coordinated(() -> {
-        if(userMapper.isExist(AuthCode) == 1){
+                if (userMapper.isExist(AuthCode) != 1)
-            int id = userMapper.selectUserByAuthCode(AuthCode).getId();
+                    return Response._failure("该用户不存在");
-            userMapper.updateIsEnableById(id, isEnable);
+                int id = userMapper.selectUserByAuthCode(AuthCode).getId();
-            galleryMapper.updateGalleryDownloader(3, id);
+                userMapper.updateIsEnableById(id, isEnable);
-            response.success("修改用户状态成功");
+                if (!isEnable) galleryMapper.updateGalleryDownloader(ADMIN_USER_ID, id);
-            taskHandlerInterceptor.updateAuthCodes();
+                return Response._success("修改用户状态成功");
+            });
+            // Refresh the in-memory identity view only after the database commits.
+            if (result.contains("\"result\":\"success\"")) taskHandlerInterceptor.updateAuthCodes();
+            return result;
+        } catch (RuntimeException error) {
+            log.warn("修改用户状态失败: {}", error.getClass().getSimpleName());
+            return Response._failure("修改用户状态失败");
         }
-        else{
-            response.failure("该用户不存在");
-        }
-
-        return response.toJSONString();
     }
 
     public String getAllUser() {
         Response response = Response.generateResponse();
         User[] users = userMapper.selectAllUser();
 
-        response.success(new ObjectMapper().valueToTree(users).toString());
+        response.success(objectMapper.valueToTree(users));
 
         return response.toJSONString();
     }
@@ -135,4 +164,28 @@ public class UserService{
     public int getUserId(String AuthCode){
         return userMapper.selectUserByAuthCode(AuthCode).getId();
     }
+
+    /**
+     * 管理员判定。项目没有角色表，历史上以 id=3（狮子）作为管理员，
+     * 前端也是用 userId === 3 判断；这里把这个约定收敛到一处，
+     * 权限相关的服务端校验统一走它。
+     */
+    public static final int ADMIN_USER_ID = 3;
+
+    public boolean isAdmin(String AuthCode){
+        if(AuthCode == null)
+            return false;
+        User user = userMapper.selectUserByAuthCode(AuthCode);
+        return user != null && user.getId() == ADMIN_USER_ID;
+    }
+
+    private String coordinated(Supplier<String> action) {
+        Lock lock = subscriptionState == null ? null : subscriptionState.writeLock();
+        if (lock != null) lock.lock();
+        try {
+            return transactions == null ? action.get() : transactions.execute(ignored -> action.get());
+        } finally {
+            if (lock != null) lock.unlock();
+        }
+    }
 }

src/main/java/com/lion/lionwebsite/Service/WebSocketService.java

@@ -1,7 +1,7 @@
 package com.lion.lionwebsite.Service;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
+import tools.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.node.ObjectNode;
+import tools.jackson.databind.node.ObjectNode;
 import com.lion.lionwebsite.Domain.GalleryTask;
 import com.lion.lionwebsite.Util.CustomUtil;
 import lombok.extern.slf4j.Slf4j;

src/main/java/com/lion/lionwebsite/Util/ClashSubscriptionParser.java

@@ -0,0 +1,45 @@
+package com.lion.lionwebsite.Util;
+
+import org.yaml.snakeyaml.Yaml;
+import org.yaml.snakeyaml.DumperOptions;
+import java.util.*;
+import java.util.regex.Pattern;
+
+/** YAML semantics rather than indentation determine nodes and references. */
+public final class ClashSubscriptionParser {
+    private static final Pattern MULTIPLIER = Pattern.compile("(\\d+(?:\\.\\d+)?)x\\s*$", Pattern.CASE_INSENSITIVE);
+    private ClashSubscriptionParser() { }
+
+    public static String transform(List<String> lines, boolean filter, double threshold) {
+        Object loaded = new Yaml().load(String.join("\n", lines));
+        if (!(loaded instanceof Map<?, ?> source)) throw new IllegalArgumentException("Clash 上游必须为 YAML 对象");
+        if (!(source.get("proxies") instanceof List<?> proxies)) throw new IllegalArgumentException("Clash 上游缺少 proxies 列表");
+        Map<Object, Object> output = new LinkedHashMap<>(source);
+        Set<String> removed = new HashSet<>();
+        List<Object> kept = new ArrayList<>();
+        for (Object node : proxies) {
+            if (!(node instanceof Map<?, ?> fields) || !(fields.get("name") instanceof String name))
+                throw new IllegalArgumentException("Clash 节点缺少名称");
+            var multiplier = MULTIPLIER.matcher(name);
+            if (filter && multiplier.find() && Double.parseDouble(multiplier.group(1)) > threshold)
+                removed.add(name);
+            else kept.add(node);
+        }
+        output.put("proxies", kept);
+        if (source.get("proxy-groups") instanceof List<?> groups) {
+            List<Object> result = new ArrayList<>();
+            for (Object group : groups) {
+                if (!(group instanceof Map<?, ?> fields)) throw new IllegalArgumentException("Clash 分组必须为对象");
+                Map<Object, Object> copy = new LinkedHashMap<>(fields);
+                if (fields.get("proxies") instanceof List<?> references)
+                    copy.put("proxies", references.stream().filter(ref -> !removed.contains(ref)).toList());
+                result.add(copy);
+            }
+            output.put("proxy-groups", result);
+        }
+        DumperOptions options = new DumperOptions();
+        options.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
+        options.setPrettyFlow(true);
+        return new Yaml(options).dump(output);
+    }
+}

src/main/java/com/lion/lionwebsite/Util/CustomUtil.java

@@ -1,6 +1,6 @@
 package com.lion.lionwebsite.Util;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
+import tools.jackson.databind.ObjectMapper;
 import jakarta.servlet.http.HttpServletResponse;
 import lombok.Data;
 import lombok.extern.slf4j.Slf4j;

src/main/java/com/lion/lionwebsite/Util/FileDownload.java

@@ -1,119 +1,86 @@
 package com.lion.lionwebsite.Util;
 
-import cn.hutool.core.util.StrUtil;
-import cn.hutool.core.util.URLUtil;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.catalina.connector.ClientAbortException;
+import org.springframework.http.ContentDisposition;
 import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpRange;
 
-import java.io.BufferedOutputStream;
+import java.io.*;
-import java.io.File;
+import java.nio.charset.StandardCharsets;
-import java.io.IOException;
+import java.util.List;
-import java.io.RandomAccessFile;
-
 
 @Slf4j
 public class FileDownload {
     public static void export(HttpServletRequest request, HttpServletResponse response, String path) {
         File file = new File(path);
-
+        if (!file.isFile()) {
-        String fileName = file.getName();
+            response.setStatus(HttpServletResponse.SC_NOT_FOUND);
-
+            return;
-        String range = request.getHeader(HttpHeaders.RANGE);
+        }
-
+        // Size and content refer to the same opened file, even if a cache is replaced.
-        String rangeSeparator = "-";
+        try (RandomAccessFile input = new RandomAccessFile(file, "r")) {
-        // 开始下载位置
+            long size = input.length();
-        long startByte = 0;
+            long start = 0;
-        // 结束下载位置
+            long end = size - 1;
-        long endByte = file.length() - 1;
+            boolean partial = false;
-
+            String range = request.getHeader(HttpHeaders.RANGE);
-        // 如果是断点续传
+            if (range != null && range.startsWith("bytes=")) {
-        if (range != null && range.contains("bytes=") && range.contains(rangeSeparator)) {
+                try {
-            // 设置响应状态码为 206
+                    List<HttpRange> ranges = HttpRange.parseRanges(range);
-            response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT);
+                    // Multiple ranges are intentionally ignored; send the full representation.
-
+                    if (ranges.size() == 1) {
-            range = range.substring(range.lastIndexOf("=") + 1).trim();
+                        if (size == 0) throw new IllegalArgumentException("empty file");
-            String[] ranges = range.split(rangeSeparator);
+                        start = ranges.getFirst().getRangeStart(size);
-            try {
+                        end = ranges.getFirst().getRangeEnd(size);
-                // 判断 range 的类型
+                        if (start < 0 || start >= size || end < start)
-                if (ranges.length == 1) {
+                            throw new IllegalArgumentException("unsatisfiable range");
-                    // 类型一：bytes=-2343
+                        partial = true;
-                    if (range.startsWith(rangeSeparator)) {
-                        endByte = Long.parseLong(ranges[0]);
-                    }
-                    // 类型二：bytes=2343-
-                    else if (range.endsWith(rangeSeparator)) {
-                        startByte = Long.parseLong(ranges[0]);
                     }
+                } catch (IllegalArgumentException e) {
+                    response.setStatus(HttpServletResponse.SC_REQUESTED_RANGE_NOT_SATISFIABLE);
+                    response.setHeader(HttpHeaders.CONTENT_RANGE, "bytes */" + size);
+                    response.setContentLengthLong(0);
+                    return;
                 }
-                // 类型三：bytes=22-2343
-                else if (ranges.length == 2) {
-                    startByte = Long.parseLong(ranges[0]);
-                    endByte = Long.parseLong(ranges[1]);
-                }
-            } catch (NumberFormatException e) {
-                // 传参不规范，则直接返回所有内容
-                startByte = 0;
-                endByte = file.length() - 1;
             }
-        } else {
+            long remaining = end - start + 1;
-            // 没有 ranges 即全部一次性传输，需要用 200 状态码，这一行应该可以省掉，因为默认返回是 200 状态码
+            response.setStatus(partial ? HttpServletResponse.SC_PARTIAL_CONTENT : HttpServletResponse.SC_OK);
-            response.setStatus(HttpServletResponse.SC_OK);
+            response.setHeader(HttpHeaders.ACCEPT_RANGES, "bytes");
-        }
+            String mime = request.getServletContext().getMimeType(file.getName());
-
+            response.setContentType(mime == null ? "application/octet-stream" : mime);
-        //要下载的长度（endByte 为总长度 -1，这时候要加回去）
+            response.setHeader(HttpHeaders.CONTENT_DISPOSITION,
-        long contentLength = endByte - startByte + 1;
+                    ContentDisposition.inline().filename(file.getName(), StandardCharsets.UTF_8).build().toString());
-        //文件类型
+            response.setContentLengthLong(remaining);
-        String contentType = request.getServletContext().getMimeType(fileName);
+            if (partial)
-
+                response.setHeader(HttpHeaders.CONTENT_RANGE, "bytes " + start + "-" + end + "/" + size);
-        if (StrUtil.isEmpty(contentType)) {
+            if ("HEAD".equalsIgnoreCase(request.getMethod()))
-            contentType = "attachment";
+                return;
-        }
+            input.seek(start);
-
+            // 关闭响应流：Tomcat 为大响应体创建的临时文件会在流关闭时删除，
-        response.setHeader(HttpHeaders.ACCEPT_RANGES, "bytes");
+            // 不关闭会一直堆积到 Full GC。flushBuffer 只能把内容送出去，不能触发清理。
-        response.setHeader(HttpHeaders.CONTENT_TYPE, contentType);
+            try (BufferedOutputStream output = new BufferedOutputStream(response.getOutputStream())) {
-        // 这里文件名换你想要的，inline 表示浏览器可以直接使用
+                byte[] buffer = new byte[8192];
-        // 参考资料：https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Headers/Content-Disposition
+                while (remaining > 0) {
-        response.setHeader(HttpHeaders.CONTENT_DISPOSITION,  contentType + ";filename=\"" + URLUtil.encode(fileName) + "\"");
+                    int count = input.read(buffer, 0, (int) Math.min(buffer.length, remaining));
-        response.setHeader(HttpHeaders.CONTENT_LENGTH, String.valueOf(contentLength));
+                    if (count == -1)
-        // [要下载的开始位置]-[结束位置]/[文件总大小]
+                        throw new EOFException("File changed during download");
-        response.setHeader(HttpHeaders.CONTENT_RANGE, "bytes " + startByte + rangeSeparator + endByte + "/" + file.length());
+                    output.write(buffer, 0, count);
-
+                    remaining -= count;
-        BufferedOutputStream outputStream;
-        //已传送数据大小
-        long transmitted = 0;
-        try (RandomAccessFile randomAccessFile = new RandomAccessFile(file, "r")) {
-            try {
-                outputStream = new BufferedOutputStream(response.getOutputStream());
-                byte[] buff = new byte[4096];
-                int len = 0;
-                randomAccessFile.seek(startByte);
-                while ((transmitted + len) <= contentLength && (len = randomAccessFile.read(buff)) != -1) {
-                    outputStream.write(buff, 0, len);
-                    transmitted += len;
-                    // 本地测试, 防止下载速度过快
-//                 Thread.sleep(1);
                 }
-                // 处理不足 buff.length 部分
+                output.flush();
-                if (transmitted < contentLength) {
-                    len = randomAccessFile.read(buff, 0, (int) (contentLength - transmitted));
-                    outputStream.write(buff, 0, len);
-                }
-
-                outputStream.flush();
                 response.flushBuffer();
-                randomAccessFile.close();
-                // log.trace("下载完毕: {}-{}, 已传输 {}", startByte, endByte, transmitted);
-            } catch (ClientAbortException e) {
-                // ignore 用户停止下载
-                // log.trace("用户停止下载: {}-{}, 已传输 {}", startByte, endByte, transmitted);
-            } catch (IOException e) {
-                log.error("文件下载IO错误: {}", path, e);
             }
+        } catch (ClientAbortException e) {
+            // The client cancelled its download.
         } catch (IOException e) {
-            log.warn("关闭RandomAccessFile失败: {}", path, e);
+            log.warn("文件下载失败: {}", path, e);
+            if (!response.isCommitted()) {
+                response.reset();
+                response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
+            }
         }
     }
 }

src/main/java/com/lion/lionwebsite/Util/GalleryPageParser.java

@@ -0,0 +1,97 @@
+package com.lion.lionwebsite.Util;
+
+import com.lion.lionwebsite.Domain.Gallery;
+import org.jsoup.nodes.Document;
+import org.jsoup.nodes.Element;
+import java.io.IOException;
+import java.util.*;
+import java.util.regex.Pattern;
+
+/** Pure parsing: upstream requests and download submission live outside this class. */
+public final class GalleryPageParser {
+    private GalleryPageParser() { }
+
+    /** 归档页 #db 单元格开头：分辨率标签 + 正数体积 + 受支持单位；后缀费用文本（Free、50GP）忽略。 */
+    private static final Pattern RESOLUTION_ENTRY =
+            Pattern.compile("^(Original|(\\d+)x)\\s+(\\d+(?:\\.\\d+)?)\\s*([A-Za-z]+)(?=\\s|$)", Pattern.CASE_INSENSITIVE);
+
+    public static Gallery metadata(Document document, String link, int gid) throws IOException {
+        String title = document.select("#gn").text();
+        if (title.isBlank()) title = document.select("#gj").text();
+        if (title.isBlank()) throw new IOException("上游页面缺少画廊名称，可能是错误页");
+        Map<String, String> fields = new HashMap<>();
+        for (Element row : document.select("#gdd tr")) {
+            var cells = row.select("td");
+            if (cells.size() < 2) continue;
+            String name = cells.get(0).text().replace(":", "").strip().toLowerCase(Locale.ROOT);
+            fields.put(name, cells.get(1).text().strip());
+        }
+        var pages = Pattern.compile("\\d+").matcher(fields.getOrDefault("length", ""));
+        if (!pages.find()) throw new IOException("上游页面缺少画廊页数");
+        Gallery result = new Gallery();
+        result.setGid(gid); result.setLink(link); result.setName(title + " [" + gid + "]");
+        result.setCreateTime(System.currentTimeMillis() / 1000); result.setProceeding(0);
+        result.setLanguage(fields.getOrDefault("language", "").replace("\u00a0", " "));
+        try {
+            result.setPages(Integer.parseInt(pages.group()));
+            result.setFileSize(CustomUtil.stringToFileSize(fields.getOrDefault("file size", "").replace(" ", "")));
+        } catch (RuntimeException failure) { throw new IOException("上游画廊页数或文件大小格式不支持", failure); }
+        if (result.getPages() <= 0) throw new IOException("上游画廊页数必须为正数");
+        result.setDisplayFileSize(CustomUtil.fileSizeToString(result.getFileSize()));
+        Element thumbnail = document.selectFirst("#gd1 [style*=url]");
+        var image = Pattern.compile("url\\(\\s*['\"]?(.*?)['\"]?\\s*\\)").matcher(thumbnail == null ? "" : thumbnail.attr("style"));
+        String imageUrl = image.find() ? image.group(1) : document.select("#gd1 img").attr("src");
+        result.setThumb_link(imageUrl.replace("https://s.exhentai.org", ""));
+        return result;
+    }
+
+    public static String archiveLink(Document document) throws IOException {
+        for (Element anchor : document.select("#gd5 a")) {
+            var matcher = Pattern.compile("https?://[^'\"\\s]+").matcher(anchor.attr("onclick"));
+            if (matcher.find()) return matcher.group();
+            String href = anchor.absUrl("href");
+            if (!href.isBlank() && (anchor.text().toLowerCase(Locale.ROOT).contains("download") || href.contains("archive")))
+                return href;
+        }
+        throw new IOException("上游页面缺少归档入口");
+    }
+
+    /**
+     * 解析归档页 #db 的可选分辨率。每个单元格合并后的文本形如 {@code Original 36.31 MiB Free}、
+     * {@code 800x 5.65 MiB Free}、{@code 2560x N/A N/A}，单段布局形如 {@code 1280x 12.5 MiB}，
+     * 都由同一条锚定规则覆盖；只看开头（分辨率 + 正数体积 + 单位），故 N/A 与费用文本不匹配，
+     * 配对也不会跨 {@code <td>} 借用相邻格。体积须能被 {@link CustomUtil#stringToFileSize(String)}
+     * 解析为正数，宽度须为正且不溢出。结果按宽度升序、{@code Original} 最后；无可用项抛 IOException。
+     */
+    public static Map<String, String> resolutions(Document document) throws IOException {
+        TreeMap<Integer, String> sizes = new TreeMap<>();
+        String original = null;
+        for (Element cell : document.select("#db td")) {
+            var matcher = RESOLUTION_ENTRY.matcher(cell.text().replace('\u00a0', ' ').strip());
+            if (!matcher.find()) continue;
+            String size = matcher.group(3) + matcher.group(4);
+            try {
+                if (CustomUtil.stringToFileSize(size) <= 0) continue;
+            } catch (RuntimeException unsupported) {
+                continue;
+            }
+            if (matcher.group(1).equalsIgnoreCase("Original")) {
+                original = size;
+                continue;
+            }
+            int width;
+            try {
+                width = Integer.parseInt(matcher.group(2));
+            } catch (NumberFormatException outOfRange) {
+                continue;
+            }
+            if (width <= 0) continue;
+            sizes.put(width, size);
+        }
+        Map<String, String> result = new LinkedHashMap<>();
+        sizes.forEach((width, size) -> result.put(width + "x", size));
+        if (original != null) result.put("Original", original);
+        if (result.isEmpty()) throw new IOException("上游页面没有可用分辨率");
+        return result;
+    }
+}

src/main/java/com/lion/lionwebsite/Util/GallerySearchParser.java

@@ -0,0 +1,74 @@
+package com.lion.lionwebsite.Util;
+
+import com.lion.lionwebsite.Domain.GalleryForQuery;
+import org.jsoup.nodes.Document;
+import org.jsoup.nodes.Element;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Pattern;
+
+/** Search entries support table and thumbnail layouts; metadata excludes title/tag text. */
+public final class GallerySearchParser {
+    private GallerySearchParser() { }
+    public static List<GalleryForQuery> parse(Document document) throws IOException {
+        List<GalleryForQuery> result = new ArrayList<>();
+        for (Element row : document.select("tr, .gl1t")) {
+            if (row.tagName().equals("tr") && !row.select(".gl1t").isEmpty()) continue;
+            Element link = row.selectFirst("a[href*=/g/]");
+            if (link == null) continue;
+            String href = link.attr("href");
+            Integer gid = GalleryUtil.parseGid(href);
+            if (gid == null) continue;
+            GalleryForQuery gallery = new GalleryForQuery();
+            gallery.setGid(gid.toString()); gallery.setLink(href);
+            Element title = row.selectFirst(".glink");
+            String name = title == null ? "" : title.text();
+            if (name.isBlank()) {
+                for (Element candidate : row.select("a[href*=/g/]")) {
+                    if (!candidate.text().isBlank()) {
+                        name = candidate.text();
+                        break;
+                    }
+                }
+            }
+            gallery.setName(name);
+            Element type = row.selectFirst(".cn, .cs");
+            Element firstCell = row.selectFirst("td");
+            gallery.setType(type != null ? type.text() : firstCell == null ? "" : firstCell.text());
+            Element image = row.selectFirst("img");
+            String thumbnail = image == null ? "" : image.attr("src");
+            if (thumbnail.isBlank() || thumbnail.startsWith("data:")) thumbnail = image == null ? "" : image.attr("data-src");
+            gallery.setThumbnailUrl(thumbnail.replace("https://s.exhentai.org", ""));
+            gallery.setPage(pageCount(row, gid));
+            Element date = row.selectFirst("[id^=posted_]");
+            if (date != null) gallery.setUploadTime(date.text());
+            else {
+                var dates = Pattern.compile("\\d{4}-\\d{2}-\\d{2}(?:\\s+\\d{2}:\\d{2})?").matcher(row.text());
+                gallery.setUploadTime(dates.find() ? dates.group() : "");
+            }
+            if (gallery.getName().isBlank()) throw new IOException("上游搜索结果缺少名称 gid=" + gid);
+            result.add(gallery);
+        }
+        return result;
+    }
+
+    private static int pageCount(Element row, int gid) throws IOException {
+        Element metadata = row.clone();
+        // Extended rows can put title and metadata in the same cell: remove only
+        // the title links/tags, retaining their containing cells and page counts.
+        metadata.select("a[href*=/g/], .glink, .gt, .gtl, .gtd, .glthumb").remove();
+        var expression = Pattern.compile("^(\\d+)\\s+pages?$", Pattern.CASE_INSENSITIVE);
+        for (Element element : metadata.getAllElements()) {
+            var pages = expression.matcher(element.text().strip());
+            if (!pages.matches()) continue;
+            try {
+                int count = Integer.parseInt(pages.group(1));
+                if (count > 0) return count;
+            } catch (NumberFormatException invalid) {
+                throw new IOException("上游搜索结果页数格式不支持 gid=" + gid, invalid);
+            }
+        }
+        throw new IOException("上游搜索结果缺少页数 gid=" + gid);
+    }
+}

src/main/java/com/lion/lionwebsite/Util/GalleryUtil.java

@@ -1,18 +1,23 @@
 package com.lion.lionwebsite.Util;
 
-import com.fasterxml.jackson.databind.JsonNode;
+import tools.jackson.databind.JsonNode;
 import com.lion.lionwebsite.Domain.Gallery;
 import com.lion.lionwebsite.Domain.ImageKeyCache;
 import com.lion.lionwebsite.Exception.ResolutionNotMatchException;
-import org.apache.http.HttpEntity;
+import java.nio.file.*;
-import org.apache.http.client.entity.EntityBuilder;
+import java.util.concurrent.TimeUnit;
-import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.hc.client5.http.classic.methods.HttpGet;
-import org.apache.http.client.methods.HttpGet;
+import org.apache.hc.client5.http.classic.methods.HttpPost;
-import org.apache.http.client.methods.HttpPost;
+import org.apache.hc.client5.http.config.RequestConfig;
-import org.apache.http.entity.ContentType;
+import org.apache.hc.client5.http.entity.EntityBuilder;
-import org.apache.http.entity.mime.MultipartEntityBuilder;
+import org.apache.hc.client5.http.entity.UrlEncodedFormEntity;
-import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
-import org.apache.http.impl.client.HttpClients;
+import org.apache.hc.client5.http.impl.classic.CloseableHttpResponse;
+import org.apache.hc.client5.http.impl.classic.HttpClients;
+import org.apache.hc.core5.http.ContentType;
+import org.apache.hc.core5.http.HttpEntity;
+import org.apache.hc.core5.http.message.BasicNameValuePair;
+import org.apache.hc.core5.util.Timeout;
 import org.jsoup.Jsoup;
 import org.jsoup.nodes.Document;
 import org.jsoup.nodes.Element;
@@ -24,8 +29,9 @@ import java.io.BufferedReader;
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStreamReader;
+import java.net.URI;
+import java.nio.charset.StandardCharsets;
 import java.util.*;
-import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import static com.lion.lionwebsite.Util.CustomUtil.objectMapper;
@@ -37,14 +43,31 @@ public class GalleryUtil {
     static String POST = "post";
     static String GET = "get";
 
-    static String FORM_DATA = "formData";
+    static String FORM_URLENCODED = "formUrlEncoded";
 
     static String JSON = "json";
 
-    static ConcurrentHashMap<String, String> gid2MpvKey = new ConcurrentHashMap<>();
+    /**
+     * gid → mpvkey 的内存缓存。key 会轮换，代码里对失配也做了刷新兜底，
+     * 因此这里只需限制为有界 LRU，避免长期运行无上限增长。
+     */
+    static final Map<String, String> gid2MpvKey = Collections.synchronizedMap(
+            new LinkedHashMap<>(64, 0.75f, true) {
+                @Override
+                protected boolean removeEldestEntry(Map.Entry<String, String> eldest) {
+                    return size() > 2048;
+                }
+            });
 
     /** Reusable HTTP client —不要每次请求新建 */
-    private static final CloseableHttpClient httpClient = HttpClients.createDefault();
+    private static final CloseableHttpClient httpClient = HttpClients.custom()
+            // An upstream download POST has no idempotency key; never replay it on 429/503.
+            .disableAutomaticRetries()
+            .setDefaultRequestConfig(RequestConfig.custom()
+                    .setConnectTimeout(Timeout.ofMilliseconds(5_000))
+                    .setConnectionRequestTimeout(Timeout.ofMilliseconds(5_000))
+                    // HttpClient 5 将 socket 读超时改名为 responseTimeout。
+                    .setResponseTimeout(Timeout.ofMilliseconds(15_000)).build()).build();
 
     /** E-Hentai Cookie, injected from application.yaml via CustomBean */
     private static String ehentaiCookie = "";
@@ -64,6 +87,12 @@ public class GalleryUtil {
      * @throws ResolutionNotMatchException  没有目标分辨率
      */
     public static Gallery parse(String url, boolean isDownload, String targetResolution) throws IOException, ResolutionNotMatchException {
+        PreparedGallery prepared = prepare(url);
+        if (prepared == null) return null;
+        return isDownload ? submit(prepared, targetResolution) : prepared.gallery();
+    }
+
+    public static PreparedGallery prepare(String url) throws IOException {
         String origin = verifyLink(url);
 
         if(origin == null){
@@ -71,66 +100,30 @@ public class GalleryUtil {
         }
 
         //初始化图片
-        Gallery gallery = new Gallery();
+        Integer gid = parseGid(url);
-        gallery.setLink(url);
+        if (gid == null) {
-        gallery.setCreateTime(System.currentTimeMillis()/1000);
+            log.warn("链接无法解析出 gid，按无效链接处理");
-        gallery.setGid(Integer.parseInt(url.split("/")[4]));
+            return null;
-        gallery.setProceeding(0);
+        }
-
+        Document galleryDoc = Jsoup.parse(requests(url, GET, null, null), url);
-        //访问图片页面
+        Gallery gallery = GalleryPageParser.metadata(galleryDoc, url, gid);
-        String galleryPage = requests(url, GET, null, null);
+        String archiveLink = GalleryPageParser.archiveLink(galleryDoc);
-        Document galleryDoc = Jsoup.parse(galleryPage);
-
-        //收集图片基本信息
-        gallery.setName(galleryDoc.select("#gn").text() + " [" + gallery.getGid() + ']');
-        gallery.setLanguage(galleryDoc.select("#gdd > table > tbody > tr:nth-child(4) > td.gdt2").text().replace("%nbps", ""));
-        gallery.setPages(Integer.parseInt(galleryDoc.select("#gdd > table > tbody > tr:nth-child(6) > td.gdt2").text().split(" ")[0]));
-        gallery.setFileSize(CustomUtil.stringToFileSize(galleryDoc.select("#gdd > table > tbody > tr:nth-child(5) > td.gdt2").text().replace(" ", "")));
-        gallery.setDisplayFileSize(CustomUtil.fileSizeToString(gallery.getFileSize()));
-        String thumb_link = galleryDoc.select("#gd1 > div").getFirst().attr("style");
-        gallery.setThumb_link(thumb_link.substring(thumb_link.indexOf("url(") + 4, thumb_link.lastIndexOf(")")).replace("https://s.exhentai.org", ""));
-
-        //查找下载页面链接并初始化参数
-        String download_link = galleryDoc.select("#gd5 > p:nth-child(2) > a").attr("onclick").split("'")[1];
         HashMap<String, String> headers = new HashMap<>();
-        headers.put("origin", origin);
+        headers.put("referer", url);
+        Document downloadDoc = Jsoup.parse(requests(archiveLink, GET, headers, null), archiveLink);
+        String download_link = downloadDoc.select("#hathdl_form").attr("abs:action");
+        if (download_link.isBlank()) throw new IOException("上游页面缺少下载提交表单");
+        gallery.setAvailableResolution(GalleryPageParser.resolutions(downloadDoc));
+        gallery.setStatus("等待确认下载");
+        return new PreparedGallery(gallery, download_link, origin);
+    }
+
+    public static Gallery submit(PreparedGallery prepared, String targetResolution) throws IOException, ResolutionNotMatchException {
+        Gallery gallery = prepared.gallery();
+        String download_link = prepared.formUrl();
+        HashMap<String, String> headers = new HashMap<>();
+        headers.put("origin", prepared.origin());
         headers.put("referer", download_link);
-
-        //访问下载页面，获取分辨率
-        String downloadPage = requests(download_link, GET, headers, null);
-        Document downloadDoc = Jsoup.parse(downloadPage);
-        Elements resolutions = downloadDoc.select("#db > div > table > tbody > tr > td");
-        download_link = downloadDoc.select("#hathdl_form").attr("action");
-
-        Map<String, String> availableResolution = new LinkedHashMap<>();
-        Map<String, String> tempResolutions = new LinkedHashMap<>();
-        ArrayList<Integer> tempResolutionKeys = new ArrayList<>();
-
-        for(Element element: resolutions){
-            String[] parameter = element.select("td > p").text().split(" ");
-            if(parameter[1].contains("N/A"))
-                continue;
-            tempResolutions.put(parameter[0], parameter[1] + parameter[2]);
-            if(parameter[0].contains("x")){
-                tempResolutionKeys.add(Integer.valueOf(parameter[0].replace("x", "")));
-            }
-        }
-
-        tempResolutionKeys.sort(Comparator.comparingInt(o -> o));
-
-        for(Integer resolution: tempResolutionKeys){
-            availableResolution.put(resolution.toString()+"x", tempResolutions.get(resolution+"x"));
-        }
-
-        availableResolution.put("Original", tempResolutions.get("Original"));
-        gallery.setAvailableResolution(availableResolution);
-
-        //如果不是下载，则直接返回
-        if(!isDownload){
-            gallery.setStatus("等待确认下载");
-            return gallery;
-        }
-
         //如果目标分辨率不存在，抛出错误
         if(!gallery.getAvailableResolution().containsKey(targetResolution)){
             log.warn("目标分辨率不存在，可用分辨率: {}", gallery.getAvailableResolution());
@@ -138,15 +131,16 @@ public class GalleryUtil {
         }
 
         gallery.setResolution(targetResolution);
-        gallery.setFileSize(CustomUtil.stringToFileSize(availableResolution.get(targetResolution).replace(" ", "")));
+        gallery.setFileSize(CustomUtil.stringToFileSize(gallery.getAvailableResolution().get(targetResolution).replace(" ", "")));
         gallery.setDisplayFileSize(CustomUtil.fileSizeToString(gallery.getFileSize()));
 
         //提交下载请求
         HashMap<String, String> body = new HashMap<>();
-        body.put("payload", FORM_DATA);
+        // The upstream form has no enctype: match the browser's default encoding.
+        body.put("payload", FORM_URLENCODED);
         body.put("hathdl_xres", targetResolution.replace("x", "").replace("Original", "org"));
-        downloadPage = requests(download_link, POST, headers, body);
+        String downloadPage = requests(download_link, POST, headers, body);
-        downloadDoc = Jsoup.parse(downloadPage);
+        Document downloadDoc = Jsoup.parse(downloadPage);
 
         //判断下载请求是否提交成功
         if(downloadDoc.select("#db > p:nth-child(2) > strong").text().startsWith("#"))
@@ -169,14 +163,12 @@ public class GalleryUtil {
         if(content.trim().isEmpty())
             return null;
         Document document = Jsoup.parse(content);
-        if(document.select("body > script").size() < 2)
+        String script = document.select("script").stream().map(Element::data).collect(java.util.stream.Collectors.joining("\n"));
-            return null;
+        if (!script.contains("imagelist") || !script.contains("mpvkey")) return null;
-        Element script = document.select("body > script").get(1);
-        String[] scripts = script.html().split("\n");
         ArrayList<ImageKeyCache> imageKeyCaches = new ArrayList<>();
         AtomicInteger page = new AtomicInteger(1);
-        gid2MpvKey.put(gid, scripts[1].split("=")[1].replace(";", "").replace("\"", "").replace(" ", ""));
+        gid2MpvKey.put(gid, JavaScriptAssignments.string(script, "mpvkey"));
-        JsonNode nodes = objectMapper.readValue(scripts[2].replace("var imagelist = ", ""), JsonNode.class);
+        JsonNode nodes = objectMapper.readTree(JavaScriptAssignments.array(script, "imagelist"));
         nodes.forEach((n) -> {
             ImageKeyCache imageKeyCache = new ImageKeyCache();
             imageKeyCache.setGid(gid);
@@ -187,12 +179,28 @@ public class GalleryUtil {
         return imageKeyCaches;
     }
 
+    /**
+     * 解析 mpv 页里的 imagelist 行。
+     * 该行是 JS 赋值语句（`var imagelist = [...];`），行尾分号属 JavaScript 语法而非 JSON，
+     * 因此先剥掉「var imagelist = 」前缀与行尾分号，再交给 JSON 解析。
+     * Jackson 3 默认开启 FAIL_ON_TRAILING_TOKENS，若把分号留给它会在解析时报错。
+     */
+    private static JsonNode parseImagelist(String scriptLine) {
+        String json = scriptLine.replace("var imagelist = ", "").trim();
+        if (json.endsWith(";"))
+            json = json.substring(0, json.length() - 1).trim();
+        return objectMapper.readValue(json, JsonNode.class);
+    }
+
     public static String getMpvKey(String url){
         String gid = String.valueOf(parseGid(url));
-        return gid2MpvKey.computeIfAbsent(gid, k -> {
+        String key = gid2MpvKey.get(gid);
+        if (key == null) {
+            // refreshMpvKey writes the cache itself; never call it inside computeIfAbsent.
             refreshMpvKey(url);
-            return gid2MpvKey.get(k);
+            key = gid2MpvKey.get(gid);
-        });
+        }
+        return key;
     }
 
     public static void refreshMpvKey(String url)  {
@@ -205,15 +213,17 @@ public class GalleryUtil {
              content = requests(mpvUrl, "get", header, null);
         }catch (Exception e){
             log.error("刷新mpvKey失败, url: {}", url, e);
-            gid2MpvKey.put(parseGid(url) + "", null);
+            gid2MpvKey.remove(parseGid(url) + "");
             return;
         }
-        Document document = Jsoup.parse(content);
+        try {
-        Element script = document.select("body > script").get(1);
+            String scripts = Jsoup.parse(content).select("script").stream().map(Element::data)
-        String[] scripts = script.html().split("\n");
+                    .collect(java.util.stream.Collectors.joining("\n"));
-        String mpvKey = scripts[1].split("=")[1].replace(";", "").replace("\"", "").replace(" ", "");
+            gid2MpvKey.put(parseGid(url) + "", JavaScriptAssignments.string(scripts, "mpvkey"));
-        gid2MpvKey.put(parseGid(url) + "", mpvKey);
+        } catch (IOException e) {
-        log.info("刷新key:{}", mpvKey);
+            gid2MpvKey.remove(parseGid(url) + "");
+            log.warn("上游mpv脚本无法解析，缓存已失效");
+        }
     }
 
     public static String getImageUrl(String mpvKey, ImageKeyCache imageKeyCache)  {
@@ -240,15 +250,38 @@ public class GalleryUtil {
     }
 
     public static String convertImg(String imagePath, String suffix){
-        Runtime rt = Runtime.getRuntime();
+        Path source = Path.of(imagePath);
+        Path target = source.resolveSibling(source.getFileName().toString().replaceFirst("\\Q" + suffix + "\\E$", ".avif"));
+        if (source.equals(target)) return imagePath;
+        Path temporary = null;
+        Process process = null;
         try {
-            Process exec = rt.exec(new String[]{"convert", imagePath, imagePath.replace(suffix, ".avif")});
+            temporary = Files.createTempFile(target.toAbsolutePath().getParent(), ".convert-", ".avif");
-            exec.waitFor();
+            process = new ProcessBuilder("convert", source.toString(), temporary.toString())
-            boolean ignored = new File(imagePath).delete();
+                    .redirectErrorStream(true).redirectOutput(ProcessBuilder.Redirect.DISCARD).start();
-            return imagePath.replace(suffix, ".avif");
+            if (!process.waitFor(60, TimeUnit.SECONDS))
-        } catch (IOException| InterruptedException e) {
+                throw new IOException("图片转换超时");
-            log.error("文件{}转换失败", imagePath, e);
+            if (process.exitValue() != 0 || Files.size(temporary) == 0)
+                throw new IOException("图片转换失败");
+            try {
+                Files.move(temporary, target, StandardCopyOption.ATOMIC_MOVE, StandardCopyOption.REPLACE_EXISTING);
+            } catch (AtomicMoveNotSupportedException e) {
+                Files.move(temporary, target, StandardCopyOption.REPLACE_EXISTING);
+            }
+            Files.deleteIfExists(source);
+            return target.toString();
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
             return null;
+        } catch (IOException e) {
+            log.warn("文件{}转换失败", imagePath, e);
+            return null;
+        } finally {
+            if (process != null && process.isAlive()) process.destroyForcibly();
+            if (temporary != null) {
+                try { Files.deleteIfExists(temporary); }
+                catch (IOException e) { log.warn("清理图片转换临时文件失败", e); }
+            }
         }
     }
 
@@ -264,9 +297,18 @@ public class GalleryUtil {
         if(url.length() < 40)
             return null;
 
-        if(!url.contains("/g/") || !url.contains("exhentai"))
+        try {
+            URI uri = URI.create(url);
+            String scheme = uri.getScheme();
+            if ((!"https".equalsIgnoreCase(scheme) && !"http".equalsIgnoreCase(scheme))
+                    || !"exhentai.org".equalsIgnoreCase(uri.getHost())
+                    || uri.getRawUserInfo() != null || uri.getPort() != -1
+                    || uri.getPath() == null || !uri.getPath().matches("/g/[0-9]+/[A-Za-z0-9]+/?"))
+                return null;
+            return scheme.toLowerCase(Locale.ROOT) + "://exhentai.org";
+        } catch (IllegalArgumentException invalidUrl) {
             return null;
-        return "";
+        }
     }
 
     /**
@@ -301,42 +343,62 @@ public class GalleryUtil {
                 httpPost.addHeader(header.getKey(), header.getValue());
 
             if(body != null) {
+                // Keep the caller's form intact; payload is a local encoding selector.
+                body = new HashMap<>(body);
                 String payload;
                 if((payload = body.remove("payload")).equals(JSON)) {
                     EntityBuilder entityBuilder = EntityBuilder.create();
                     entityBuilder.setContentType(ContentType.APPLICATION_JSON);
                     entityBuilder.setText(objectMapper.writeValueAsString(body));
                     httpPost.setEntity(entityBuilder.build());
-                } else if(payload.equals(FORM_DATA)) {
+                } else if(payload.equals(FORM_URLENCODED)) {
-                    MultipartEntityBuilder multipartEntityBuilder = MultipartEntityBuilder.create();
+                    var fields = body.entrySet().stream()
-                    body.forEach(multipartEntityBuilder::addTextBody);
+                            .map(entry -> new BasicNameValuePair(entry.getKey(), entry.getValue())).toList();
-                    httpPost.setEntity(multipartEntityBuilder.build());
+                    httpPost.setEntity(new UrlEncodedFormEntity(fields, StandardCharsets.UTF_8));
                 }
             }
             httpResponse = httpClient.execute(httpPost);
         }
-        HttpEntity responseEntity = httpResponse.getEntity();
+        try (httpResponse) {
-        int statusCode = httpResponse.getStatusLine().getStatusCode();
+            HttpEntity responseEntity = httpResponse.getEntity();
-        StringBuilder stringBuilder = new StringBuilder();
+            int statusCode = httpResponse.getCode();
-
+            StringBuilder stringBuilder = new StringBuilder();
-        if(statusCode == 200){
+            if (statusCode == 200 && responseEntity != null) {
-            BufferedReader reader = new BufferedReader(new InputStreamReader(responseEntity.getContent()));
+                try (BufferedReader reader = new BufferedReader(new InputStreamReader(responseEntity.getContent(), StandardCharsets.UTF_8))) {
-            String str;
+                    String str;
-            while((str = reader.readLine()) != null)
+                    while ((str = reader.readLine()) != null)
-                stringBuilder.append(str).append("\n");
+                        stringBuilder.append(str).append("\n");
-        } else{
+                }
-            log.warn("{}:{}", url, statusCode);
+            } else {
+                // Never log gallery tokens, cookies or an arbitrary upstream error body.
+                throw new IOException("上游 HTTP " + statusCode + " (" + method.toUpperCase(Locale.ROOT)
+                        + " " + URI.create(url).getHost() + ")");
+            }
+            return stringBuilder.toString();
         }
-
-        httpResponse.close();
-
-        return stringBuilder.toString();
     }
 
+    /**
+     * 从链接里安全提取 gid。
+     *
+     * <p>历史实现只捕 {@code IndexOutOfBoundsException}：非数字段会抛
+     * {@code NumberFormatException}，{@code link == null} 会抛 NPE，两者都会在
+     * 「无 @ControllerAdvice」的项目里穿透成 500。这里与
+     * {@code GalleryManageService.parseGidFromLink} 保持一致的宽松语义：
+     * 任何畸形输入都返回 null，由调用方转成业务失败。
+     */
     public static Integer parseGid(String link){
+        if (link == null)
+            return null;
+        String[] parts = link.split("/g/");
+        if (parts.length < 2)
+            return null;
+        String[] segments = parts[1].split("/");
+        if (segments.length == 0)
+            return null;
         try {
-            return Integer.parseInt(link.split("/g/")[1].split("/")[0]);
+            return Integer.parseInt(segments[0]);
-        }catch (IndexOutOfBoundsException e){
+        } catch (NumberFormatException e) {
             return null;
         }
     }

src/main/java/com/lion/lionwebsite/Util/ImageFileCache.java

@@ -0,0 +1,67 @@
+package com.lion.lionwebsite.Util;
+
+import java.io.*;
+import java.net.URI;
+import java.net.URLConnection;
+import java.nio.file.*;
+import java.util.Locale;
+import java.util.concurrent.Callable;
+
+/** Downloads into private temporary files and publishes only completed images. */
+public final class ImageFileCache {
+    private static final SingleFlight<Path, Path> downloads = new SingleFlight<>();
+
+    private ImageFileCache() { }
+
+    public static Path find(Path directory, String name) {
+        for (String suffix : new String[]{".avif", ".gif"}) {
+            Path path = directory.resolve(name + suffix);
+            if (Files.isRegularFile(path) && path.toFile().length() > 0)
+                return path;
+        }
+        return null;
+    }
+
+    public static Path get(Path directory, String name, Callable<String> sourceUrl) throws Exception {
+        Path key = directory.resolve(name).toAbsolutePath().normalize();
+        return downloads.run(key, () -> {
+            Path cached = find(directory, name);
+            if (cached != null) return cached;
+            Files.createDirectories(directory);
+            String url = sourceUrl.call();
+            if (url == null) throw new IOException("图片地址不存在");
+            URI source = new URI(url);
+            boolean gif = source.getPath().toLowerCase(Locale.ROOT).endsWith(".gif");
+            String suffix = gif ? ".gif" : ".img";
+            Path temporary = Files.createTempFile(directory, ".download-", suffix);
+            Path converted = null;
+            try {
+                URLConnection connection = source.toURL().openConnection();
+                connection.setConnectTimeout(5_000);
+                connection.setReadTimeout(15_000);
+                try (InputStream input = connection.getInputStream();
+                     OutputStream output = Files.newOutputStream(temporary)) {
+                    input.transferTo(output);
+                }
+                if (Files.size(temporary) == 0) throw new IOException("图片内容为空");
+                if (gif) {
+                    converted = temporary;
+                } else {
+                    String result = GalleryUtil.convertImg(temporary.toString(), suffix);
+                    if (result == null) throw new IOException("图片转换失败");
+                    converted = Path.of(result);
+                }
+                Path target = directory.resolve(name + (gif ? ".gif" : ".avif"));
+                try {
+                    Files.move(converted, target, StandardCopyOption.ATOMIC_MOVE, StandardCopyOption.REPLACE_EXISTING);
+                } catch (AtomicMoveNotSupportedException e) {
+                    Files.move(converted, target, StandardCopyOption.REPLACE_EXISTING);
+                }
+                return target;
+            } finally {
+                Files.deleteIfExists(temporary);
+                if (converted != null && !converted.equals(temporary)) Files.deleteIfExists(converted);
+            }
+        });
+    }
+}

src/main/java/com/lion/lionwebsite/Util/JavaScriptAssignments.java

@@ -0,0 +1,34 @@
+package com.lion.lionwebsite.Util;
+
+import java.io.IOException;
+import java.util.regex.Pattern;
+
+/** Extracts data assignments without depending on script position or line layout. */
+public final class JavaScriptAssignments {
+    private JavaScriptAssignments() { }
+
+    public static String string(String source, String name) throws IOException {
+        var matcher = Pattern.compile("\\b" + Pattern.quote(name) + "\\s*=\\s*(['\"])(.*?)\\1", Pattern.DOTALL).matcher(source);
+        if (!matcher.find()) throw new IOException("上游脚本缺少 " + name);
+        return matcher.group(2);
+    }
+
+    public static String array(String source, String name) throws IOException {
+        var matcher = Pattern.compile("\\b" + Pattern.quote(name) + "\\s*=\\s*\\[").matcher(source);
+        if (!matcher.find()) throw new IOException("上游脚本缺少 " + name);
+        int start = matcher.end() - 1, depth = 0; char quote = 0; boolean escaped = false;
+        for (int i = start; i < source.length(); i++) {
+            char c = source.charAt(i);
+            if (quote != 0) {
+                if (escaped) escaped = false;
+                else if (c == '\\') escaped = true;
+                else if (c == quote) quote = 0;
+                continue;
+            }
+            if (c == '"' || c == '\'') quote = c;
+            else if (c == '[') depth++;
+            else if (c == ']' && --depth == 0) return source.substring(start, i + 1);
+        }
+        throw new IOException("上游脚本的 " + name + " 不完整");
+    }
+}

src/main/java/com/lion/lionwebsite/Util/PanelLoginTicket.java

@@ -0,0 +1,107 @@
+package com.lion.lionwebsite.Util;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+import javax.crypto.Mac;
+import javax.crypto.spec.SecretKeySpec;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.time.Duration;
+import java.time.Instant;
+import java.util.HexFormat;
+
+/**
+ * 机器人一键登录票据：与 PersonalHub 共享密钥的 HMAC 自签串。
+ *
+ * <p>形状为 {@code v1.<签发秒级时间戳>.<HMAC-SHA256(密钥, "v1.<时间戳>") 的十六进制>}。
+ * 机器人本地用同一把密钥签出，LionWebsite 侧只做验签与新鲜度判断，因此不需要
+ * 机器人到主站的网络调用，两端任一侧临时不可达都不影响链接生成。
+ *
+ * <p>设计取舍：票据不携带一次性状态，时间窗内可重放（用户明确接受这一点）。
+ * 窗口外的票据一律拒绝，所以泄露的链接在 {@code ticket-ttl-seconds} 之后自动失效。
+ *
+ * <p>票据只签发给主人：密钥只配置在主人自己的机器人上，不随用户分发。
+ */
+@Component
+@Slf4j
+public class PanelLoginTicket {
+
+    private static final String VERSION = "v1";
+    private static final String ALGORITHM = "HmacSHA256";
+
+    private final byte[] secret;
+    private final Duration ttl;
+
+    public PanelLoginTicket(
+            @Value("${personal.login.secret:}") String secret,
+            @Value("${personal.login.ticket-ttl-seconds:300}") long ttlSeconds) {
+        this.secret = secret == null ? new byte[0] : secret.getBytes(StandardCharsets.UTF_8);
+        this.ttl = Duration.ofSeconds(Math.max(30, ttlSeconds));
+        if (this.secret.length == 0)
+            log.warn("未配置 personal.login.secret，一键登录票据将一律拒绝");
+    }
+
+    /** 密钥未配置时无法签发也无法校验，调用方据此给出可读提示。 */
+    public boolean configured() {
+        return secret.length > 0;
+    }
+
+    public String issue() {
+        return issue(Instant.now());
+    }
+
+    /** 供测试注入固定时钟。 */
+    public String issue(Instant now) {
+        if (!configured())
+            throw new IllegalStateException("未配置 personal.login.secret");
+        String stamp = String.valueOf(now.getEpochSecond());
+        return VERSION + "." + stamp + "." + sign(stamp);
+    }
+
+    public boolean verify(String ticket) {
+        return verify(ticket, Instant.now());
+    }
+
+    public boolean verify(String ticket, Instant now) {
+        if (!configured() || ticket == null)
+            return false;
+
+        String[] parts = ticket.split("\\.", -1);
+        if (parts.length != 3 || !VERSION.equals(parts[0]) || parts[1].isEmpty() || parts[2].isEmpty())
+            return false;
+
+        if (!MessageDigest.isEqual(sign(parts[1]).getBytes(StandardCharsets.UTF_8),
+                parts[2].getBytes(StandardCharsets.UTF_8)))
+            return false;
+
+        long issuedAt;
+        try {
+            issuedAt = Long.parseLong(parts[1]);
+        } catch (NumberFormatException e) {
+            return false;
+        }
+
+        // 只接受 [now - ttl, now]：未来时间戳一律拒绝，避免伪造者用远期时间换取长期有效。
+        long ageSeconds = now.getEpochSecond() - issuedAt;
+        return ageSeconds >= 0 && ageSeconds <= ttl.getSeconds();
+    }
+
+    public long ttlSeconds() {
+        return ttl.getSeconds();
+    }
+
+    private String sign(String stamp) {
+        try {
+            Mac mac = Mac.getInstance(ALGORITHM);
+            mac.init(new SecretKeySpec(secret, ALGORITHM));
+            return HexFormat.of().formatHex(
+                    mac.doFinal((VERSION + "." + stamp).getBytes(StandardCharsets.UTF_8)));
+        } catch (Exception e) {
+            // 算法名固定且密钥非空，正常不会走到这里；一旦发生必须视为校验失败。
+            log.error("计算登录票据签名失败", e);
+            return "";
+        }
+    }
+}

src/main/java/com/lion/lionwebsite/Util/PreparedGallery.java

@@ -0,0 +1,6 @@
+package com.lion.lionwebsite.Util;
+
+import com.lion.lionwebsite.Domain.Gallery;
+
+/** A read-only upstream preparation; creating this value never submits a download. */
+public record PreparedGallery(Gallery gallery, String formUrl, String origin) { }

src/main/java/com/lion/lionwebsite/Util/Response.java

@@ -1,7 +1,7 @@
 package com.lion.lionwebsite.Util;
 
-import com.fasterxml.jackson.databind.JsonNode;
+import tools.jackson.databind.JsonNode;
-import com.fasterxml.jackson.databind.node.ObjectNode;
+import tools.jackson.databind.node.ObjectNode;
 
 
 public class Response {
@@ -19,7 +19,8 @@ public class Response {
     }
 
     public String get(String key){
-        return result.get(key).asText();
+        JsonNode node = result.get(key);
+        return node == null ? null : node.asText();
     }
 
     public void setData(String data){
@@ -57,7 +58,8 @@ public class Response {
     }
 
     public String getData(){
-        return result.get("data").asText();
+        JsonNode node = result.get("data");
+        return node == null ? null : node.asText();
     }
 
     /**
@@ -69,8 +71,10 @@ public class Response {
         return getData();
     }
 
+    /** 未设置 result 键时视为失败，而不是抛 NPE。 */
     public boolean isSuccess(){
-        return result.get("result").asText().equals("success");
+        JsonNode node = result.get("result");
+        return node != null && "success".equals(node.asText());
     }
 
 

src/main/java/com/lion/lionwebsite/Util/SingleFlight.java

@@ -0,0 +1,30 @@
+package com.lion.lionwebsite.Util;
+
+import java.util.concurrent.*;
+
+/** Concurrent callers for the same key share one in-flight operation, including its failure. */
+public final class SingleFlight<K, V> {
+    private final ConcurrentHashMap<K, CompletableFuture<V>> running = new ConcurrentHashMap<>();
+
+    public V run(K key, Callable<V> operation) throws Exception {
+        CompletableFuture<V> mine = new CompletableFuture<>();
+        CompletableFuture<V> existing = running.putIfAbsent(key, mine);
+        if (existing != null) {
+            try { return existing.get(); }
+            catch (ExecutionException e) {
+                if (e.getCause() instanceof Exception cause) throw cause;
+                throw new IllegalStateException(e.getCause());
+            }
+        }
+        try {
+            V result = operation.call();
+            mine.complete(result);
+            return result;
+        } catch (Exception | Error e) {
+            mine.completeExceptionally(e);
+            throw e;
+        } finally {
+            running.remove(key, mine);
+        }
+    }
+}

src/main/java/com/lion/lionwebsite/Util/SubscriptionCacheStore.java

@@ -0,0 +1,328 @@
+package com.lion.lionwebsite.Util;
+
+import lombok.extern.slf4j.Slf4j;
+
+import java.io.IOException;
+import java.io.StringReader;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.AtomicMoveNotSupportedException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
+import java.security.MessageDigest;
+import java.util.Comparator;
+import java.util.HexFormat;
+import java.util.List;
+import java.util.Optional;
+import java.util.Properties;
+import java.util.concurrent.atomic.AtomicLong;
+import java.util.stream.Stream;
+
+/**
+ * 订阅缓存的分代存储：v2ray 与 clash 两份内容必须同时生效。
+ *
+ * <p>旧实现把两份文件各自原子替换，第二份失败时用户会拿到「新 v2ray + 旧 clash」的
+ * 混合版本。这里把两份文件写进同一个不可变分代目录，校验通过后用一次原子替换发布
+ * 指针（manifest），因此抓取、解析、写入或发布任何一步失败，都只会保留上一个完整分代。
+ *
+ * <p>目录结构：
+ * <pre>
+ * &lt;cacheRoot&gt;/&lt;accountId&gt;/current                      指针（原子替换，最后发布）
+ * &lt;cacheRoot&gt;/&lt;accountId&gt;/generations/&lt;generation&gt;/v2ray.txt
+ * &lt;cacheRoot&gt;/&lt;accountId&gt;/generations/&lt;generation&gt;/clash.yaml
+ * &lt;cacheRoot&gt;/&lt;accountId&gt;/v2ray.txt + clash.yaml          旧结构，两份都在才按 legacy 读
+ * </pre>
+ *
+ * <p>读取始终从指针指向的同一个分代里取两份文件，所以拿到的一定是同版本内容。
+ */
+@Slf4j
+public class SubscriptionCacheStore {
+    private static final String MANIFEST_FILE = "current";
+    private static final String GENERATION_DIR = "generations";
+    private static final String V2_FILE = "v2ray.txt";
+    private static final String CLASH_FILE = "clash.yaml";
+    /** 保留目录名，结构上永远不存在，用于表达「当前没有可分发版本」。 */
+    private static final String UNAVAILABLE_DIR = ".unavailable";
+    private static final String MANIFEST_GENERATION = "generation";
+    private static final String MANIFEST_V2_SHA = "v2-sha256";
+    private static final String MANIFEST_CLASH_SHA = "clash-sha256";
+    /** 旧结构读出来的版本的 generation 标记；真实分代名是定宽时间戳，不会与之碰撞。 */
+    private static final String LEGACY_GENERATION = "legacy";
+    /** 保留分代数：当前与上一个，足够回退且不会无限增长。 */
+    private static final int RETAINED_GENERATIONS = 2;
+    private static final AtomicLong SEQUENCE = new AtomicLong();
+
+    private final Path root;
+
+    public SubscriptionCacheStore(String cacheRoot) {
+        this(Paths.get(cacheRoot));
+    }
+
+    public SubscriptionCacheStore(Path root) {
+        this.root = root;
+    }
+
+    /** 同一个分代目录里读出的一对内容；两份文件必然同版本。 */
+    public record Pair(String generation, byte[] v2, byte[] clash) { }
+
+    public Path accountDir(int accountId) {
+        return root.resolve(String.valueOf(accountId));
+    }
+
+    /** 旧结构的账号根文件路径。仅供兼容测试定位 legacy 文件，不作为回退目标。 */
+    public Path legacyPath(int accountId, String client) {
+        return accountDir(accountId).resolve(fileName(client));
+    }
+
+    /**
+     * 没有完整可分发版本时返回的哨兵路径。
+     *
+     * <p>它保证不存在，因此调用方用 {@code Files.isRegularFile} 判定就会走「订阅暂不可用」
+     * 分支，而不会被半份 legacy 文件骗过。
+     */
+    public Path unavailablePath(int accountId, String client) {
+        return accountDir(accountId).resolve(UNAVAILABLE_DIR).resolve(fileName(client));
+    }
+
+    private static String fileName(String client) {
+        return "v2".equals(client) ? V2_FILE : CLASH_FILE;
+    }
+
+    /**
+     * 写入一份新分代并在最后发布指针。
+     *
+     * <p>失败时抛出异常，且不改变指针与上一个分代，调用方据此保留上次的完整版本。
+     */
+    public Pair publish(int accountId, byte[] v2, byte[] clash) throws IOException {
+        Path account = accountDir(accountId);
+        Files.createDirectories(account);
+        String generation = nextGeneration();
+        Path dir = account.resolve(GENERATION_DIR).resolve(generation);
+        boolean published = false;
+        try {
+            Files.createDirectories(dir);
+            writeFile(dir.resolve(V2_FILE), v2);
+            writeFile(dir.resolve(CLASH_FILE), clash);
+            // 发布前校验：两份文件都必须能按写入内容读回，避免把半截内容挂上指针。
+            verify(dir.resolve(V2_FILE), v2);
+            verify(dir.resolve(CLASH_FILE), clash);
+            publishManifest(account, generation, sha256(v2), sha256(clash));
+            published = true;
+        } finally {
+            if (!published)
+                deleteRecursively(dir);
+        }
+        prune(account, generation);
+        removeLegacy(account);
+        return new Pair(generation, v2, clash);
+    }
+
+    /** 读取当前发布内容；只有构成一整个有效版本时才返回。 */
+    public Optional<Pair> read(int accountId) {
+        return Optional.ofNullable(load(accountDir(accountId)));
+    }
+
+    /**
+     * 解析当前应分发的单个文件。
+     *
+     * <p>与 {@link #read}、{@link #hasComplete} 使用同一份配对契约：只有两份文件
+     * 齐全且哈希校验通过时才返回路径，因此分发路径不会发出半份或已损坏的缓存。
+     */
+    public Optional<Path> resolve(int accountId, String client) {
+        Path account = accountDir(accountId);
+        Pair pair = load(account);
+        if (pair == null)
+            return Optional.empty();
+        Path path = LEGACY_GENERATION.equals(pair.generation())
+                ? account.resolve(fileName(client))
+                : account.resolve(GENERATION_DIR).resolve(pair.generation()).resolve(fileName(client));
+        return Files.isRegularFile(path) ? Optional.of(path) : Optional.empty();
+    }
+
+    /** 是否已有可分发的一对内容（分代两份都在且哈希匹配，或旧结构两份都在）。 */
+    public boolean hasComplete(int accountId) {
+        return load(accountDir(accountId)) != null;
+    }
+
+    /** 删除该账号的全部缓存（指针、分代、旧结构文件），使后续请求判定为无缓存。 */
+    public void invalidate(int accountId) {
+        Path account = accountDir(accountId);
+        deleteIfExists(account.resolve(MANIFEST_FILE));
+        deleteRecursively(account.resolve(GENERATION_DIR));
+        deleteIfExists(account.resolve(V2_FILE));
+        deleteIfExists(account.resolve(CLASH_FILE));
+    }
+
+    /** 写入接缝：测试覆写以模拟第二份文件写入失败。 */
+    protected void writeFile(Path target, byte[] data) throws IOException {
+        atomicWrite(target, data);
+    }
+
+    /** 指针发布接缝：测试覆写以模拟 manifest 发布失败。 */
+    protected void publishManifest(Path accountDir, String generation, String v2Sha256, String clashSha256)
+            throws IOException {
+        atomicWrite(accountDir.resolve(MANIFEST_FILE),
+                manifestText(generation, v2Sha256, clashSha256).getBytes(StandardCharsets.UTF_8));
+    }
+
+    /**
+     * 读取「一整个版本」：一次读入指针快照，再按该快照定位分代并校验双文件哈希。
+     *
+     * <p>指针只读一次，因此并发 {@link #publish} 切换指针时不会出现「用新分代名配旧哈希」
+     * 或哈希字段缺失导致的空指针；要么拿到完整的新版本，要么拿到完整的旧版本。
+     */
+    private Pair load(Path account) {
+        Properties manifest = readManifest(account);
+        if (manifest == null) {
+            // 指针文件不存在才是「旧结构」。指针存在但读不出来说明它已损坏，同样按无缓存处理。
+            return Files.isRegularFile(account.resolve(MANIFEST_FILE)) ? null : loadLegacy(account);
+        }
+        Pair generation = loadGeneration(account, manifest);
+        if (generation != null)
+            return generation;
+        // 指针存在却读不出完整版本（半写、被篡改、内容缺失）时不得回退到 legacy：
+        // 那会发出一个比指针更旧的版本，掩盖损坏。此时按无可用缓存处理。
+        return null;
+    }
+
+    private Pair loadGeneration(Path account, Properties manifest) {
+        String generation = manifest.getProperty(MANIFEST_GENERATION);
+        if (generation == null || generation.isBlank() || generation.contains("/") || generation.contains("..")) {
+            log.warn("订阅缓存指针内容非法");
+            return null;
+        }
+        String v2Sha256 = manifest.getProperty(MANIFEST_V2_SHA);
+        String clashSha256 = manifest.getProperty(MANIFEST_CLASH_SHA);
+        if (v2Sha256 == null || clashSha256 == null) {
+            log.warn("订阅缓存指针缺少哈希字段 generation={}", generation);
+            return null;
+        }
+        Path dir = account.resolve(GENERATION_DIR).resolve(generation);
+        byte[] v2 = readFile(dir.resolve(V2_FILE));
+        byte[] clash = readFile(dir.resolve(CLASH_FILE));
+        if (v2 == null || clash == null) {
+            log.warn("订阅缓存分代内容缺失 generation={}", generation);
+            return null;
+        }
+        if (!matches(v2, v2Sha256) || !matches(clash, clashSha256)) {
+            log.warn("订阅缓存分代内容校验失败 generation={}", generation);
+            return null;
+        }
+        return new Pair(generation, v2, clash);
+    }
+
+    /** 旧结构：只有账号根下两份文件都在才构成一个有效版本。 */
+    private Pair loadLegacy(Path account) {
+        byte[] v2 = readFile(account.resolve(V2_FILE));
+        byte[] clash = readFile(account.resolve(CLASH_FILE));
+        if (v2 == null || clash == null)
+            return null;
+        return new Pair(LEGACY_GENERATION, v2, clash);
+    }
+
+    /** 指针读取接缝：包内可见，便于测试统计「每次查询只读一次指针」。 */
+    Properties readManifest(Path account) {
+        Path manifest = account.resolve(MANIFEST_FILE);
+        if (!Files.isRegularFile(manifest))
+            return null;
+        try {
+            Properties properties = new Properties();
+            properties.load(new StringReader(Files.readString(manifest, StandardCharsets.UTF_8)));
+            return properties;
+        } catch (IOException e) {
+            log.warn("读取订阅缓存指针失败: {}", e.getMessage());
+            return null;
+        }
+    }
+
+    private static byte[] readFile(Path path) {
+        try {
+            return Files.isRegularFile(path) ? Files.readAllBytes(path) : null;
+        } catch (IOException e) {
+            log.warn("读取订阅缓存文件失败 path={} error={}", path, e.getMessage());
+            return null;
+        }
+    }
+
+    private static void verify(Path path, byte[] expected) throws IOException {
+        byte[] written = Files.readAllBytes(path);
+        if (written.length != expected.length || !MessageDigest.isEqual(written, expected))
+            throw new IOException("订阅缓存写入校验失败 " + path.getFileName());
+    }
+
+    private static boolean matches(byte[] content, String expectedSha256) {
+        return expectedSha256 != null && expectedSha256.equals(sha256(content));
+    }
+
+    private static String manifestText(String generation, String v2Sha256, String clashSha256) {
+        return MANIFEST_GENERATION + "=" + generation + "\n"
+                + MANIFEST_V2_SHA + "=" + v2Sha256 + "\n"
+                + MANIFEST_CLASH_SHA + "=" + clashSha256 + "\n";
+    }
+
+    /** 分代名定宽可排序：时间戳在前保证单调，序号消除同毫秒碰撞。 */
+    private static String nextGeneration() {
+        return String.format("%013d-%06d", System.currentTimeMillis(), SEQUENCE.incrementAndGet() % 1_000_000);
+    }
+
+    private void prune(Path account, String current) {
+        Path dir = account.resolve(GENERATION_DIR);
+        List<Path> generations;
+        try (Stream<Path> entries = Files.list(dir)) {
+            generations = entries.filter(Files::isDirectory)
+                    .sorted(Comparator.comparing(path -> path.getFileName().toString(), Comparator.reverseOrder()))
+                    .toList();
+        } catch (IOException e) {
+            log.warn("清理订阅缓存分代失败 path={} error={}", dir, e.getMessage());
+            return;
+        }
+        for (int index = RETAINED_GENERATIONS; index < generations.size(); index++) {
+            Path stale = generations.get(index);
+            if (!stale.getFileName().toString().equals(current))
+                deleteRecursively(stale);
+        }
+    }
+
+    /** 分代发布成功后旧结构文件被取代，避免两份来源同时存在。 */
+    private void removeLegacy(Path account) {
+        deleteIfExists(account.resolve(V2_FILE));
+        deleteIfExists(account.resolve(CLASH_FILE));
+    }
+
+    private static void atomicWrite(Path target, byte[] data) throws IOException {
+        Path temp = target.resolveSibling(target.getFileName() + ".tmp");
+        Files.write(temp, data);
+        try {
+            Files.move(temp, target, StandardCopyOption.ATOMIC_MOVE, StandardCopyOption.REPLACE_EXISTING);
+        } catch (AtomicMoveNotSupportedException e) {
+            Files.move(temp, target, StandardCopyOption.REPLACE_EXISTING);
+        }
+    }
+
+    private static void deleteIfExists(Path path) {
+        try {
+            Files.deleteIfExists(path);
+        } catch (IOException e) {
+            log.warn("删除订阅缓存文件失败 path={} error={}", path, e.getMessage());
+        }
+    }
+
+    private static void deleteRecursively(Path path) {
+        if (!Files.exists(path))
+            return;
+        try (Stream<Path> entries = Files.walk(path)) {
+            entries.sorted(Comparator.reverseOrder()).forEach(SubscriptionCacheStore::deleteIfExists);
+        } catch (IOException e) {
+            log.warn("删除订阅缓存目录失败 path={} error={}", path, e.getMessage());
+        }
+    }
+
+    private static String sha256(byte[] input) {
+        try {
+            return HexFormat.of().formatHex(MessageDigest.getInstance("SHA-256").digest(input));
+        } catch (Exception e) {
+            throw new IllegalStateException(e);
+        }
+    }
+}