fix: 优化核心包

gig-poc/apps/api/app/domain/schemas.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from datetime import datetime
+from datetime import datetime, timedelta, timezone
 from enum import Enum
 
 from pydantic import BaseModel, ConfigDict, Field, field_validator, model_validator
@@ -46,6 +46,16 @@ class JobCard(BaseModel):
     tags: list[str] = Field(default_factory=list, description="业务标签列表")
     confidence: float = Field(ge=0, le=1, description="数据置信度，范围 0~1")
 
+    @field_validator("start_time", mode="after")
+    @classmethod
+    def normalize_start_time(cls, value: datetime) -> datetime:
+        shanghai_tz = timezone(timedelta(hours=8))
+        if value.tzinfo is None:
+            value = value.replace(tzinfo=shanghai_tz)
+        else:
+            value = value.astimezone(shanghai_tz)
+        return value.replace(second=0, microsecond=0)
+
 
 class WorkerCard(BaseModel):
     worker_id: str = Field(description="工人唯一 ID")