rebuild(migration): validate local legacy cutover

next/backend/features/accounts/service.py

@@ -210,16 +210,16 @@ class AccountService:
             return None
         try:
             payload = json.loads(self._cipher.decrypt(str(row["encrypted_payload"])))
+            return BirthProfile(
+                birth_date=str(payload["birth_date"]),
+                birth_time=str(payload["birth_time"]),
+                gender=str(payload["gender"]),
+                updated_at=datetime.fromisoformat(str(row["updated_at"])),
+            )
         except (ValueError, json.JSONDecodeError, KeyError) as exc:
             raise BusinessError(
                 "profile_unavailable", "个人资料暂时无法读取，请联系管理员。"
             ) from exc
-        return BirthProfile(
-            birth_date=str(payload["birth_date"]),
-            birth_time=str(payload["birth_time"]),
-            gender=str(payload["gender"]),
-            updated_at=datetime.fromisoformat(str(row["updated_at"])),
-        )
 
     def save_profile(
         self, user_id: int, birth_date: date, birth_time: str, gender: str