更新登录页及优化相关功能

shierfeng-fastapi-backend/module_business/domain/fifo_policy.py

@@ -0,0 +1,15 @@
+"""只比较真实到货时间，不将未知时间或托盘编号作为先后依据。"""
+
+from datetime import datetime
+from typing import Any
+
+
+def requires_fifo_skip_reason(
+    pallet_id: int, arrived_at: datetime | None, candidate: dict[str, Any] | None
+) -> bool:
+    return bool(
+        arrived_at is not None
+        and candidate is not None
+        and candidate['pallet_id'] != pallet_id
+        and candidate['site_arrived_at'] < arrived_at
+    )