fix: 修复任务长期运行中卡住

tests/integration/test_task_flow_xiaohongshu.py

@@ -1,4 +1,6 @@
 import json
+import time
+from types import SimpleNamespace
 
 from sqlalchemy import select
 from sqlalchemy.orm import Session
@@ -147,3 +149,43 @@ def test_xiaohongshu_task_flow_keeps_item_success_when_ai_request_raises(monkeyp
             assert persisted.analysis_success_rate == 0.0
             assert comment.ai_analysis_status == "failed"
             assert comment.reason == "ai_parse_failed"
+
+
+def test_xiaohongshu_task_flow_times_out_stalled_ai_request(monkeypatch):
+    with make_test_client() as (_client, engine):
+        monkeypatch.setattr("app.services.task_service.build_platform", lambda _platform: FakeXhsPlatform())
+        monkeypatch.setattr(
+            "app.services.task_service.get_settings",
+            lambda: SimpleNamespace(ai_max_retries=1, ai_timeout_seconds=0.01),
+        )
+
+        def stalled_requester(prompt):
+            time.sleep(0.2)
+            comments = json.loads(prompt[prompt.index("[") :])
+            return json.dumps(
+                [{"comment_id": comments[0]["comment_id"], "sentiment": "positive", "labels": ["超时后不应采用"], "reason": "late"}],
+                ensure_ascii=False,
+            )
+
+        monkeypatch.setattr("app.services.task_service.build_ai_dependencies", lambda: (stalled_requester, None))
+
+        with Session(engine) as session:
+            task = create_task(
+                session,
+                CreateTaskRequest(platform="xiaohongshu", hotspot_limit=1, item_limit_per_hotspot=1, comment_limit_per_item=10),
+                submit_background=False,
+            )
+            task_id = task.id
+
+        with Session(engine) as session:
+            run_task(task_id, session_factory=lambda: session)
+
+            persisted = session.get(Task, task_id)
+            comment = session.scalar(select(Comment).where(Comment.task_id == task_id))
+
+        assert persisted.status == "success"
+        assert persisted.finished_at is not None
+        assert persisted.analysis_status == "insufficient"
+        assert comment.ai_analysis_status == "failed"
+        assert comment.sentiment == "unknown"
+        assert comment.reason == "ai_parse_failed"