fix: 隐藏 Demo 标识并修正时间展示

tests/integration/test_routes.py

@@ -107,8 +107,9 @@ def test_index_page_uses_short_task_numbers_compact_fields_and_friendly_error_co
     assert "#" not in visible_text
     assert first_id not in visible_text
     assert second_id not in visible_text
-    assert "2026-07-03 10:30" in visible_text
-    assert "2026-07-03 10:35" in visible_text
+    assert "2026-07-03 18:30" in visible_text
+    assert "2026-07-03 18:35" in visible_text
+    assert "Demo 数据" not in visible_text
     assert "5热点 × 5内容 × 50评论" in visible_text
     assert "1热点 × 1内容 × 10评论" in visible_text
     assert "小红书 · 5热点" not in visible_text
@@ -207,7 +208,38 @@ def test_task_detail_uses_short_number_title_and_hides_full_uuid():
     assert task_id not in visible_text
     assert "任务 #33333333-3333-4333-8333-333333333333" not in visible_text
     assert "#" not in visible_text
-    assert "创建时间 2026-07-03 10:30" in visible_text
+    assert "创建时间 2026-07-03 18:30" in visible_text
+    assert "Demo 数据" not in visible_text
+
+
+def test_demo_task_flag_is_kept_but_demo_copy_is_hidden_from_pages():
+    with make_test_client() as (client, engine):
+        from sqlalchemy.orm import Session
+
+        with Session(engine) as session:
+            session.add(
+                Task(
+                    id="demo-task-hidden-copy",
+                    platform="xiaohongshu",
+                    status="success",
+                    created_at=datetime(2026, 7, 3, 10, 30, tzinfo=UTC),
+                    hotspot_limit=1,
+                    item_limit_per_hotspot=1,
+                    comment_limit_per_item=10,
+                )
+            )
+            session.commit()
+
+        index_response = client.get("/")
+        detail_response = client.get("/tasks/demo-task-hidden-copy")
+        api_response = client.get("/api/tasks/demo-task-hidden-copy")
+
+    assert index_response.status_code == 200
+    assert detail_response.status_code == 200
+    assert api_response.status_code == 200
+    assert api_response.json()["is_demo"] is True
+    assert "Demo 数据" not in BeautifulSoup(index_response.text, "html.parser").get_text(" ")
+    assert "Demo 数据" not in BeautifulSoup(detail_response.text, "html.parser").get_text(" ")
 
 
 def test_running_task_detail_page_keeps_polling_after_hotspots_exist():