feat: shipment change && version modelize

api_v1/external_datetime.py

@@ -0,0 +1,23 @@
+from datetime import datetime
+
+from django.utils import timezone
+
+
+def parse_external_china_datetime(value: str | None):
+    """外部 records 的时间字符串业务上是中国时间，即使误带 Z 也按本地时间解释。"""
+    if not value:
+        return None
+    text = str(value).strip()
+    if not text:
+        return None
+
+    normalized = text[:-1] if text.endswith('Z') else text
+    try:
+        dt = datetime.fromisoformat(normalized)
+    except ValueError:
+        return None
+
+    tz = timezone.get_current_timezone()
+    if timezone.is_aware(dt):
+        dt = dt.replace(tzinfo=None)
+    return timezone.make_aware(dt, tz)