回滚：移除告警处理图片字段，告警只记录状态

告警只需记录处理状态（已处理/误报），图片等信息在工单体系中管理。
移除 handle_image_url 字段、自动迁移和相关参数。

app/models.py

@@ -281,7 +281,6 @@ class AlarmEvent(Base):
     area_id = Column(BigInteger, comment="所属区域ID")
     handler = Column(String(64), comment="处理人")
     handle_remark = Column(Text, comment="处理备注")
-    handle_image_url = Column(String(512), comment="处理图片URL")
     handled_at = Column(DateTime, comment="处理时间")
     created_at = Column(DateTime, default=lambda: beijing_now())
     updated_at = Column(DateTime, default=lambda: beijing_now(),
@@ -313,7 +312,6 @@ class AlarmEvent(Base):
             "area_id": self.area_id,
             "handler": self.handler,
             "handle_remark": self.handle_remark,
-            "handle_image_url": self.handle_image_url,
             "handled_at": self.handled_at.strftime('%Y-%m-%d %H:%M:%S') if self.handled_at else None,
             "created_at": self.created_at.strftime('%Y-%m-%d %H:%M:%S') if self.created_at else None,
             "updated_at": self.updated_at.strftime('%Y-%m-%d %H:%M:%S') if self.updated_at else None,
@@ -537,27 +535,9 @@ def get_session():
     return _SessionLocal()
 
 
-def _auto_migrate(engine):
-    """自动添加缺失的列（create_all 不会 ALTER 已有表）"""
-    from sqlalchemy import inspect, text
-    insp = inspect(engine)
-    migrations = [
-        ("alarm_event", "handle_image_url", "VARCHAR(512) COMMENT '处理图片URL'"),
-    ]
-    with engine.connect() as conn:
-        for table, column, col_def in migrations:
-            if table in insp.get_table_names():
-                existing = [c["name"] for c in insp.get_columns(table)]
-                if column not in existing:
-                    conn.execute(text(f"ALTER TABLE {table} ADD COLUMN {column} {col_def}"))
-                    conn.commit()
-
-
 def init_db():
     engine = get_engine()
     Base.metadata.create_all(bind=engine)
-    # 自动添加新列（ALTER TABLE 不会被 create_all 处理）
-    _auto_migrate(engine)
 
 
 class NotifyArea(Base):

app/routers/yudao_aiot_alarm.py

@@ -101,7 +101,6 @@ async def _alarm_to_camel(alarm_dict: dict, camera_info_map: dict = None, camera
         "edgeNodeId": alarm_dict.get("edge_node_id"),
         "handler": alarm_dict.get("handler"),
         "handleRemark": alarm_dict.get("handle_remark"),
-        "handleImageUrl": alarm_dict.get("handle_image_url"),
         "handledAt": alarm_dict.get("handled_at"),
         "createdAt": alarm_dict.get("created_at"),
         "updatedAt": alarm_dict.get("updated_at"),
@@ -220,7 +219,6 @@ async def handle_alert(
     handleStatus: Optional[str] = Query(None, description="处理状态: HANDLING/DONE/IGNORED"),
     status: Optional[str] = Query(None, description="处理状态（兼容旧接口）"),
     remark: Optional[str] = Query(None, description="处理备注"),
-    handleImageUrl: Optional[str] = Query(None, description="处理图片URL"),
     service: AlarmEventService = Depends(get_alarm_event_service),
     current_user: dict = Depends(get_current_user)
 ):
@@ -244,7 +242,6 @@ async def handle_alert(
         handle_status=handleStatus,
         remark=remark,
         handler=handler,
-        handle_image_url=handleImageUrl,
     )
     if not alarm:
         raise HTTPException(status_code=404, detail="告警不存在")

app/services/alarm_event_service.py

@@ -427,7 +427,6 @@ class AlarmEventService:
         handle_status: Optional[str] = None,
         remark: Optional[str] = None,
         handler: Optional[str] = None,
-        handle_image_url: Optional[str] = None,
     ) -> Optional[AlarmEvent]:
         """处理告警"""
         db = get_session()
@@ -444,8 +443,6 @@ class AlarmEventService:
                 alarm.handle_remark = remark
             if handler:
                 alarm.handler = handler
-            if handle_image_url:
-                alarm.handle_image_url = handle_image_url
 
             now = beijing_now()
             alarm.handled_at = now