修改API接口

app/schemas/api_schemas.py

@@ -20,6 +20,7 @@ class RainfallPredictRequest(BaseModel):
                                       description="累计降雨量(mm)，不传则从气象表自动获取")
     duration: Optional[float] = Field(None, ge=0,
                                       description="降雨持续时间(h)，不传则从气象表自动获取")
+    occurred_time: Optional[datetime] = Field(None, description="事件发生时间，不传则为当前时间")
     operation_type: str = Field("模拟", min_length=1, max_length=50,
                                 description="操作类型（如 '模拟', '实时监测', '应急评估'）")
 
@@ -38,7 +39,7 @@ class EarthquakePredictRequest(BaseModel):
     depth: float = Field(10.0, gt=0, le=700, description="震源深度(km)，默认10km")
     epicenter_lon: float = Field(..., ge=-180, le=180, description="震中经度")
     epicenter_lat: float = Field(..., ge=-90, le=90, description="震中纬度")
-    occurred_time: datetime = Field(..., description="地震发生时间")
+    occurred_time: Optional[datetime] = Field(None, description="地震发生时间，不传则为当前时间")
     operation_type: str = Field("模拟", min_length=1, max_length=50,
                                 description="操作类型（如 '模拟', '实时监测', '应急评估'）")