feat: V1.03 initialize 上线消息 — 固件+工具同步

vd960DBN:
- dev_initialize_pub() 改为 V1.03 格式 (msg_id/cmd/ts/data/extra_info)
- iot_mqtt_srv: 订阅改双主题 dld960/{sn}/srv, 响应 topic 改 dev
- SUBACK 后自动发 initialize 告知服务器上线
- net_srv.h: 加 dev_initialize_pub 声明

DBNMQTTool:
- protocol.py: 加 CMD_INITIALIZE
- device_manager: DeviceInfo 加 extra_info, 加 mark_online()
- main.py: 接收 initialize 消息, 自动标记设备上线
- docs: 协议 V1.03 + devlog V3.1

DBNMQTTool/dbn_mqtt_tool/device_manager.py

@@ -22,6 +22,7 @@ class DeviceInfo:
     online: bool = False
     loop_data: Optional[dict] = None
     events: list = field(default_factory=list)
+    extra_info: dict = field(default_factory=dict)  # from initialize 消息
 
 
 class DeviceManager:
@@ -91,6 +92,17 @@ class DeviceManager:
             dev.online = True
         self._notify()
 
+    def mark_online(self, dev_serial: str, extra_info: Optional[dict] = None):
+        """V1.03: 设备上线初始化标记"""
+        with self._lock:
+            dev = self.get_or_create(dev_serial)
+            dev.online = True
+            dev.last_seen = datetime.now()
+            if extra_info:
+                dev.extra_info = extra_info
+                dev.soft_ver = extra_info.get("version", dev.soft_ver)
+        self._notify()
+
     def set_offline(self):
         """标记所有设备离线（断开连接时调用）"""
         with self._lock:

DBNMQTTool/dbn_mqtt_tool/protocol.py

@@ -65,6 +65,7 @@ CMD_REPORT_CONFIG    = "report_config"
 CMD_LOOP_DATA    = "loop_data"
 CMD_EVENT_REPORT = "event_report"
 CMD_HEARTBEAT    = "heartbeat"
+CMD_INITIALIZE   = "initialize"      # V1.03: 设备上电初始化
 
 # 配置类命令 → topic
 CONFIG_SET_COMMANDS = {CMD_DEV_SERIAL_SET, CMD_SSC_NET_SET, CMD_IOT_NET_SET, CMD_IOT_TOPIC_SET, CMD_LOOP_PARAM_SET}