Fix gallery resolution parsing for split archive paragraphs

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

@@ -11,6 +11,10 @@ import java.util.regex.Pattern;
 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();
@@ -52,16 +56,37 @@ public final class GalleryPageParser {
         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 {
-        var expression = Pattern.compile("^(\\d+x|Original)\\s+([\\d.]+)\\s*([A-Za-z]+)$", Pattern.CASE_INSENSITIVE);
         TreeMap<Integer, String> sizes = new TreeMap<>();
         String original = null;
-        for (Element paragraph : document.select("#db td p")) {
-            var matcher = expression.matcher(paragraph.text().strip());
-            if (!matcher.matches()) continue;
-            String size = matcher.group(2) + matcher.group(3);
-            if (matcher.group(1).equalsIgnoreCase("Original")) original = size;
-            else sizes.put(Integer.parseInt(matcher.group(1).replace("x", "")), size);
+        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));