fix: AI review list UTC filter, vision timeout, and stuck loading state

Co-authored-by: Cursor <cursoragent@cursor.com>

history_window_lib.py

@@ -75,6 +75,14 @@ def utc_window_to_bj_sql_strings(start_utc, end_utc, app_tz):
     return start_bj, end_bj
 
 
+def utc_window_to_utc_sql_strings(start_utc, end_utc):
+    """SQLite CURRENT_TIMESTAMP 写入 UTC 时，用于 created_at 范围比较。"""
+    return (
+        start_utc.strftime("%Y-%m-%d %H:%M:%S"),
+        end_utc.strftime("%Y-%m-%d %H:%M:%S"),
+    )
+
+
 def normalize_bj_datetime_storage(raw):
     """表单 datetime-local（含 T）入库前统一为 YYYY-MM-DD HH:MM:SS（北京时间）。"""
     s = (raw or "").strip().replace("T", " ").replace("Z", "").strip()