diff --git a/src/__tests__/ask-user-question.test.ts b/src/__tests__/ask-user-question.test.ts
index 84b02ec..c2a5038 100644
--- a/src/__tests__/ask-user-question.test.ts
+++ b/src/__tests__/ask-user-question.test.ts
@@ -54,8 +54,8 @@ describe('buildAskUserQuestionCard', () => {
     expect(actionGroup.tag).toBe('action');
     expect(actionGroup.actions).toHaveLength(2);
 
-    // First option should be primary
-    expect(actionGroup.actions[0].type).toBe('primary');
+    // All options should be default (no misleading "primary" highlight)
+    expect(actionGroup.actions[0].type).toBe('default');
     expect(actionGroup.actions[0].text.content).toBe('Option A');
     expect(actionGroup.actions[0].value).toEqual({
       action: 'ask_user_answer',
@@ -65,7 +65,6 @@ describe('buildAskUserQuestionCard', () => {
       optionLabel: 'Option A',
     });
 
-    // Second option should be default
     expect(actionGroup.actions[1].type).toBe('default');
     expect(actionGroup.actions[1].text.content).toBe('Option B');
   });
diff --git a/src/feishu/event-handler.ts b/src/feishu/event-handler.ts
index 412690f..c215a61 100644
--- a/src/feishu/event-handler.ts
+++ b/src/feishu/event-handler.ts
@@ -132,8 +132,13 @@ interface PendingQuestion {
 /** questionId → PendingQuestion */
 const pendingQuestions = new Map<string, PendingQuestion>();
 
-/** AskUserQuestion 等待超时（5 分钟） */
-const ASK_USER_TIMEOUT_MS = 5 * 60 * 1000;
+/** AskUserQuestion 等待超时（毫秒）。0 表示永不超时（默认）。 */
+const ASK_USER_TIMEOUT_MS = (() => {
+  const raw = process.env.ASK_USER_TIMEOUT_MS;
+  if (raw === undefined || raw === '') return 0;
+  const n = Number(raw);
+  return Number.isFinite(n) && n > 0 ? n : 0;
+})();
 
 /**
  * 创建 AskUserQuestion 回调（供 executeClaudeTask / executeDirectTask 共用）
@@ -161,15 +166,17 @@ function createAskUserHandler(chatId: string, getThreadReplyMsgId: () => string
         chatId,
       };
 
-      pending.timeoutTimer = setTimeout(() => {
-        pendingQuestions.delete(questionId);
-        reject(new Error('AskUserQuestion timed out'));
-      }, ASK_USER_TIMEOUT_MS);
+      if (ASK_USER_TIMEOUT_MS > 0) {
+        pending.timeoutTimer = setTimeout(() => {
+          pendingQuestions.delete(questionId);
+          reject(new Error('AskUserQuestion timed out'));
+        }, ASK_USER_TIMEOUT_MS);
+      }
 
       pendingQuestions.set(questionId, pending);
 
       // 发送卡片（在话题内回复或直接发到群）
-      // 如果发送失败，立即 reject 而非等待 5 分钟超时
+      // 如果发送失败，立即 reject 而非等待用户回答（避免任务永久挂起）
       const trySendCard = async () => {
         try {
           const threadMsgId = getThreadReplyMsgId();
diff --git a/src/feishu/message-builder.ts b/src/feishu/message-builder.ts
index 94460b0..32b22aa 100644
--- a/src/feishu/message-builder.ts
+++ b/src/feishu/message-builder.ts
@@ -1282,7 +1282,7 @@ export function buildAskUserQuestionCard(
     const buttons = q.options.map((opt, oi) => ({
       tag: 'button',
       text: { tag: 'plain_text', content: opt.label },
-      type: oi === 0 ? 'primary' : 'default',
+      type: 'default',
       value: {
         action: 'ask_user_answer',
         questionId,