feat: 提交热榜评论分析工具 MVP 基线

tests/integration/test_task_flow_douyin.py

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+from sqlalchemy.orm import Session
+
+from app.models import Comment, Task
+from app.platforms.base import CommentData, ContentItemData, HotspotData
+from app.schemas import CreateTaskRequest
+from app.services.task_service import create_task, run_task
+from tests.helpers import make_test_client
+
+
+class FakeDouyinPlatform:
+    def fetch_hotspots(self, *, limit):
+        return [HotspotData(source_hot_id="d1", title="抖音热点", rank=1, heat_value="200", raw_data={})]
+
+    def search_items_by_hotspot(self, keyword, *, limit):
+        return [ContentItemData(source_item_id="v1", item_type="video", title="视频", raw_data={})]
+
+    def fetch_comments(self, source_item_id, *, limit):
+        return [CommentData(source_comment_id="dc1", content="抖音评论", raw_data={})]
+
+
+def test_douyin_task_flow_persists_comments(monkeypatch):
+    with make_test_client() as (_client, engine):
+        monkeypatch.setattr("app.services.task_service.build_platform", lambda _platform: FakeDouyinPlatform())
+
+        with Session(engine) as session:
+            task = create_task(
+                session,
+                CreateTaskRequest(platform="douyin", 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)
+            task = session.get(Task, task_id)
+            comment = session.query(Comment).filter_by(task_id=task_id).one()
+
+        assert task.status == "success"
+        assert comment.content == "抖音评论"