LivoxProto1: ExecuteHandshake uses udpCommandDemuxer

UdpCommandDemuxer also now supports devices "under construction".

commonLibs/livoxProto1/device.h

@@ -90,6 +90,18 @@ public:
 	uint8_t smoSubnetNbits;
 	uint16_t dataPort, cmdPort, imuPort;
 
+	// Static collection for devices being constructed (not yet in DeviceManager)
+	// Maps device IP to list of command-specific UDP handlers for that device
+	struct CommandHandler {
+		uint8_t cmd_set;
+		uint8_t cmd_id;
+		std::function<void(
+			const uint8_t* data, ssize_t bytesReceived,
+			const struct sockaddr_in& senderAddr)> handler;
+	};
+	static std::unordered_map<std::string, std::vector<CommandHandler>>
+		devicesUnderConstruction;
+
 private:
 	// Heartbeat mechanism
 	void startHeartbeat();
@@ -162,8 +174,11 @@ public:
 		uint8_t cmd_set, uint8_t cmd_id,
 		std::function<void(
 			const uint8_t* data, ssize_t bytesReceived,
-			const struct sockaddr_in& senderAddr)> handler);
-	void unregisterUdpCommandHandler(uint8_t cmd_set, uint8_t cmd_id);
+			const struct sockaddr_in& senderAddr)> handler,
+		const std::string& deviceIP = "");
+
+	void unregisterUdpCommandHandler(
+		uint8_t cmd_set, uint8_t cmd_id, const std::string& deviceIP = "");
 
 private:
 	// Point cloud data setup