feat(aiot): 边缘告警HTTP上报 + 移除配置中转层

- 新增 edge/report 端点接收边缘端HTTP告警上报
- alarm_event_service 新增 create_from_edge_report 幂等创建
- schemas 新增 EdgeAlarmReport 模型
- 移除 config_service/redis_service/yudao_aiot_config 配置中转
- MQTT 服务标记废弃，告警上报改为HTTP+COS
- config 新增 COS/Redis 配置项
- requirements 新增 redis 依赖

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/services/alarm_event_service.py

@@ -126,6 +126,97 @@ class AlarmEventService:
         finally:
             db.close()
 
+    def create_from_edge_report(self, data: Dict[str, Any]) -> Optional[AlarmEvent]:
+        """
+        从边缘端 HTTP 上报创建告警事件
+
+        边缘端通过 POST /admin-api/aiot/alarm/edge/report 上报告警。
+        使用边缘端生成的 alarm_id，支持幂等（重复 alarm_id 跳过）。
+
+        Args:
+            data: 边缘端上报数据，字段与 alarm_event 表对齐
+
+        Returns:
+            AlarmEvent 或 None
+        """
+        db = get_session()
+        try:
+            alarm_id = data.get("alarm_id")
+            if not alarm_id:
+                logger.error("边缘上报缺少 alarm_id")
+                return None
+
+            # 幂等校验：alarm_id 已存在则跳过
+            existing = db.query(AlarmEvent).filter(AlarmEvent.alarm_id == alarm_id).first()
+            if existing:
+                logger.info(f"告警已存在，跳过: {alarm_id}")
+                return existing
+
+            # 解析时间
+            event_time_str = data.get("event_time")
+            if event_time_str:
+                try:
+                    event_time = datetime.fromisoformat(event_time_str.replace("Z", "+00:00"))
+                except ValueError:
+                    event_time = datetime.now(timezone.utc)
+            else:
+                event_time = datetime.now(timezone.utc)
+
+            # 置信度
+            confidence = data.get("confidence_score")
+            if confidence is not None:
+                confidence = float(confidence)
+                if confidence > 1:
+                    confidence = confidence / 100.0
+
+            alarm_type = data.get("alarm_type", "unknown")
+            alarm_level = data.get("alarm_level")
+            if alarm_level is None:
+                # 从 ext_data 取 duration_ms
+                ext_data = data.get("ext_data") or {}
+                duration_ms = ext_data.get("duration_ms")
+                alarm_level = _determine_alarm_level(alarm_type, confidence or 0, duration_ms)
+
+            alarm = AlarmEvent(
+                alarm_id=alarm_id,
+                alarm_type=alarm_type,
+                algorithm_code=data.get("algorithm_code"),
+                device_id=data.get("device_id", "unknown"),
+                scene_id=data.get("scene_id"),
+                event_time=event_time,
+                alarm_level=alarm_level,
+                confidence_score=confidence,
+                alarm_status="NEW",
+                handle_status="UNHANDLED",
+                snapshot_url=data.get("snapshot_url"),  # COS object_key
+                edge_node_id=data.get("ext_data", {}).get("edge_node_id") if data.get("ext_data") else None,
+            )
+
+            db.add(alarm)
+
+            # 写入扩展表
+            ext_data = data.get("ext_data")
+            if ext_data:
+                ext = AlarmEventExt(
+                    alarm_id=alarm_id,
+                    ext_type="EDGE_HTTP",
+                    ext_data=ext_data,
+                )
+                db.add(ext)
+
+            db.commit()
+            db.refresh(alarm)
+
+            logger.info(f"边缘端告警创建成功: {alarm_id}, type={alarm_type}, device={data.get('device_id')}")
+            return alarm
+
+        except Exception as e:
+            db.rollback()
+            logger.error(f"创建边缘端告警失败: {e}")
+            return None
+        finally:
+            db.close()
+
     def create_from_http(self, data: Dict[str, Any], snapshot_data: Optional[bytes] = None) -> Optional[AlarmEvent]:
         """从 HTTP 请求创建告警事件"""
         db = get_session()