fix(wechat): isolate stale images and page links

user-space.mjs

@@ -50,12 +50,22 @@ export function ensureUserZoneDirs(workspaceRoot) {
 }
 
 /** 上传完成后镜像到 MindSpace/<user>/<category>/文件名 */
-export function mirrorAssetToZone({ workspaceRoot, categoryCode, filename, sourcePath }) {
+export function mirrorAssetToZone({
+  workspaceRoot,
+  categoryCode,
+  filename,
+  sourcePath,
+  overwrite = true,
+}) {
   if (!UPLOAD_ZONE_CODES.includes(categoryCode)) return null;
   if (!sourcePath || !fs.existsSync(sourcePath)) return null;
   ensureUserZoneDirs(workspaceRoot);
   const dest = resolveZoneFilePath(workspaceRoot, categoryCode, filename);
   fs.mkdirSync(path.dirname(dest), { recursive: true });
+  // Layout bootstrap is a recovery/backfill path. Re-copying every canonical
+  // asset on every chat request changes workspace mtimes, can overwrite a
+  // newer Agent edit, and makes historical HTML look newly generated.
+  if (!overwrite && fs.existsSync(dest)) return dest;
   fs.copyFileSync(sourcePath, dest);
   return dest;
 }
@@ -165,7 +175,8 @@ export async function syncUserZonesFromAssets(pool, storageRoot, userId, workspa
      FROM h5_assets a
      JOIN h5_space_categories c ON c.id = a.category_id AND c.user_id = a.user_id
      JOIN h5_asset_versions v ON v.id = a.current_version_id
-     WHERE a.user_id = ? AND a.status <> 'deleted' AND c.category_code IN (${placeholders})`,
+     WHERE a.user_id = ? AND a.status <> 'deleted' AND c.category_code IN (${placeholders})
+     ORDER BY a.updated_at DESC`,
     [userId, ...UPLOAD_ZONE_CODES],
   );
   for (const row of rows) {
@@ -175,6 +186,7 @@ export async function syncUserZonesFromAssets(pool, storageRoot, userId, workspa
       categoryCode: row.category_code,
       filename: row.original_filename,
       sourcePath,
+      overwrite: false,
     });
   }
   return { workspaceRoot, mirrored: rows.length };