Fix Tag rules : tag/.* does not include tag

web/src/lib/tag.ts

@@ -26,9 +26,20 @@ const getCompiledPattern = (pattern: string): RegExp | null => {
   return re;
 };
 
+const matchesTagPattern = (tag: string, pattern: string, re: RegExp): boolean => {
+  if (re.test(tag)) {
+    return true;
+  }
+
+  // A tag hierarchy exposes its prefixes as tags too. Treat a trailing /.*
+  // rule as matching the prefix itself by testing the empty suffix.
+  return pattern.endsWith("/.*") && re.test(`${tag}/`);
+};
+
 /**
  * Finds the first matching TagMetadata for a given tag name by treating each
- * key in tagsSetting.tags as an anchored regex pattern (^pattern$).
+ * key in tagsSetting.tags as an anchored regex pattern (^pattern$). A trailing
+ * /.* pattern also matches its hierarchy prefix.
  *
  * Lookup order:
  * 1. Exact key match (O(1) fast path, backward-compatible).
@@ -43,7 +54,7 @@ export const findTagMetadata = (tag: string, tagsSetting: UserSetting_TagsSettin
   // Regex path: treat each key as an anchored pattern.
   for (const [pattern, metadata] of Object.entries(tagsSetting.tags)) {
     const re = getCompiledPattern(pattern);
-    if (re?.test(tag)) {
+    if (re && matchesTagPattern(tag, pattern, re)) {
       return metadata;
     }
   }

web/tests/tag.test.ts

@@ -62,3 +62,22 @@ describe("exact tag keys", () => {
     expect(findTagMetadata("toString", setting)).toBe(metadata);
   });
 });
+
+describe("hierarchical tag rules", () => {
+  it("matches the hierarchy prefix as well as its descendants", () => {
+    const metadata = { blurContent: true } as UserSetting_TagMetadata;
+    const setting = { tags: { "tagA/.*": metadata } } as UserSetting_TagsSetting;
+
+    expect(findTagMetadata("tagA", setting)).toBe(metadata);
+    expect(findTagMetadata("tagA/child", setting)).toBe(metadata);
+    expect(findTagMetadata("tagAB", setting)).toBeUndefined();
+  });
+
+  it("keeps ordinary exact patterns from matching descendants", () => {
+    const metadata = { blurContent: true } as UserSetting_TagMetadata;
+    const setting = { tags: { tagA: metadata } } as UserSetting_TagsSetting;
+
+    expect(findTagMetadata("tagA", setting)).toBe(metadata);
+    expect(findTagMetadata("tagA/child", setting)).toBeUndefined();
+  });
+});