fix: persist repaired exclusions

app/findings.js

@@ -272,7 +272,7 @@ export async function deduplicateWithAI(findings) {
 /**
  * 讀取排除問題檔案（從來源分支的 cloned repoDir 中的 EXCLUSIONS_PATH）
  */
-export function loadExclusions(workspace, repoState = null) {
+export function loadExclusions(workspace, repoState = null, mirrorWorkspace = null) {
   const fullPath = path.join(workspace, EXCLUSIONS_PATH);
   if (!fs.existsSync(fullPath)) {
     warn(`排除問題檔案不存在，視為空: ${fullPath}`);
@@ -302,6 +302,11 @@ export function loadExclusions(workspace, repoState = null) {
     line(`檔案資訊: bytes=${stat.size} mtime=${formatFileTime(stat.mtimeMs)} raw=${rawCount} normalized=${exclusions.length} path=${path.relative(workspace, fullPath) || fullPath}`);
     if (sourceFormat !== 'array') {
       writeCanonicalExclusions(fullPath, normalizedSource);
+      if (mirrorWorkspace && path.resolve(mirrorWorkspace) !== path.resolve(workspace)) {
+        const mirrorPath = path.join(mirrorWorkspace, EXCLUSIONS_PATH);
+        fs.mkdirSync(path.dirname(mirrorPath), { recursive: true });
+        writeCanonicalExclusions(mirrorPath, normalizedSource);
+      }
       line(`排除問題格式已修正為頂層陣列: source=${sourceFormat} -> array`);
     }
   } catch (e) {