fix(ai-review 對話收斂): 並行取檔與 resolve、處理單檔失敗與無路徑留言

app/resolve.js

@@ -49,6 +49,7 @@ export function groupConversations(comments) {
   const groups = new Map();
   for (const c of comments || []) {
     const filePath = typeof c?.path === 'string' ? c.path : '';
+    if (!filePath) continue; // 無檔案路徑的留言無法定位，跳過以免併入共用群組
     const lineNum = Number(c?.position) || Number(c?.original_position) || 0;
     const key = `${filePath}|${lineNum}`;
     if (!groups.has(key)) {
@@ -129,10 +130,17 @@ export async function reconcileConversations(deps = {}) {
   line(`對話收斂: 對話總數=${conversations.length} 已解決/不可處理=${alreadyResolved} 待判斷=${open.length}`);
   if (open.length === 0) return { ...EMPTY };
 
+  // 並行取得各檔案最新內容；單一檔案失敗時視為空字串，不中斷整體流程
   const fileCache = new Map();
-  for (const filePath of [...new Set(open.map(c => c.path).filter(Boolean))]) {
-    fileCache.set(filePath, await getFileContent(filePath));
-  }
+  const filePaths = [...new Set(open.map(c => c.path).filter(Boolean))];
+  await Promise.all(filePaths.map(async (filePath) => {
+    try {
+      fileCache.set(filePath, await getFileContent(filePath));
+    } catch (e) {
+      warn(`取得檔案內容失敗（視為空）: ${filePath} error=${e.message}`);
+      fileCache.set(filePath, '');
+    }
+  }));
 
   const items = open.map((c, idx) => ({
     idx,
@@ -153,19 +161,29 @@ export async function reconcileConversations(deps = {}) {
 
   const resolvedFindings = [];
   const carriedFindings = [];
+
+  // 並行 resolve 所有 AI 判定已解決的對話（allSettled：個別失敗不中斷其他）
+  const resolveTargets = open
+    .map((c, i) => ({ c, i }))
+    .filter(({ i }) => resolvedSet.has(i));
+  const settled = await Promise.allSettled(
+    resolveTargets.map(({ c }) => resolveComment(c.commentIds[0])),
+  );
+  const resolveOutcome = new Map();
+  resolveTargets.forEach(({ i }, j) => resolveOutcome.set(i, settled[j]));
+
   let resolvedCount = 0;
   for (let i = 0; i < open.length; i++) {
     const c = open[i];
-    if (resolvedSet.has(i)) {
-      try {
-        await resolveComment(c.commentIds[0]);
-        resolvedCount += 1;
-        if (c.botFinding) resolvedFindings.push({ ...c.botFinding, is_new: false });
-        ok(`對話已解決並 resolve: ${c.path}:${c.line}`);
-        continue;
-      } catch (e) {
-        warn(`resolve 對話失敗（保留為未解決）: ${c.path}:${c.line} error=${e.message}`);
-      }
+    const outcome = resolveOutcome.get(i);
+    if (outcome?.status === 'fulfilled') {
+      resolvedCount += 1;
+      if (c.botFinding) resolvedFindings.push({ ...c.botFinding, is_new: false });
+      ok(`對話已解決並 resolve: ${c.path}:${c.line}`);
+      continue;
+    }
+    if (outcome?.status === 'rejected') {
+      warn(`resolve 對話失敗（保留為未解決）: ${c.path}:${c.line} error=${outcome.reason?.message}`);
     }
     pushCarried(carriedFindings, c);
   }