支持多子账号订阅与独立节点过滤

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"