fix: unify completed item visibility

tests/test_mvp_backend.py

@@ -1,7 +1,14 @@
-from datetime import UTC, datetime, timedelta
+from datetime import datetime, timedelta
+from zoneinfo import ZoneInfo
 
 from sqlalchemy import event
 
+BUSINESS_TIME_ZONE = ZoneInfo("Asia/Shanghai")
+
+
+def local_today():
+    return datetime.now(BUSINESS_TIME_ZONE).date()
+
 
 def boot(client):
     response = client.post(
@@ -299,12 +306,12 @@ def test_habits_numeric_accumulation_pause_archive_grid_and_stats(client):
     )
     assert habit.status_code == 201
     habit_id = habit.json()["id"]
-    today = datetime.now(UTC).date().isoformat()
+    today = local_today().isoformat()
     for value in (6, 7):
         assert client.post(f"/api/v1/habits/{habit_id}/logs", json={"day": today, "value": value}).status_code == 200
     assert client.get(f"/api/v1/habits/{habit_id}/logs").json()[0]["value"] == 10
     assert client.put(f"/api/v1/habits/{habit_id}/logs/{today}", json={"value": 8}).json()["value"] == 8
-    yesterday = (datetime.now(UTC).date() - timedelta(days=1)).isoformat()
+    yesterday = (local_today() - timedelta(days=1)).isoformat()
     assert client.post(f"/api/v1/habits/{habit_id}/pauses", json={"start_date": yesterday, "end_date": today}).status_code == 201
     grid = client.get("/api/v1/habits/grid", params={"week": yesterday}).json()
     assert len(grid["days"]) == 7 and grid["habits"][0]["cells"]
@@ -328,7 +335,7 @@ def test_habit_permanent_delete_removes_habit_and_history(client):
         json={"name": "待删除习惯", "kind": "numeric", "target": 3, "schedule_type": "daily"},
     )
     habit_id = created.json()["id"]
-    today = datetime.now(UTC).date().isoformat()
+    today = local_today().isoformat()
     assert client.put(f"/api/v1/habits/{habit_id}/logs/{today}", json={"value": 2}).status_code == 200
 
     assert client.delete(f"/api/v1/habits/{habit_id}").status_code == 204
@@ -346,7 +353,7 @@ def test_boolean_interval_habit_schedule(client):
     )
     assert habit.status_code == 201
     assert client.post(
-        f"/api/v1/habits/{habit.json()['id']}/logs", json={"day": datetime.now(UTC).date().isoformat(), "value": 1}
+        f"/api/v1/habits/{habit.json()['id']}/logs", json={"day": local_today().isoformat(), "value": 1}
     ).json()["value"] == 1