build: rename package

WebRTCSignalServer/src/main/java/com/ttstd/signaling/model/DeviceType.java

@@ -0,0 +1,6 @@
+package com.ttstd.signaling.model;
+
+public enum DeviceType {
+    CONTROLLER,
+    CONTROLLED
+}

WebRTCSignalServer/src/main/java/com/ttstd/signaling/model/SignalMessage.java

@@ -0,0 +1,30 @@
+package com.ttstd.signaling.model;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class SignalMessage {
+
+    private String type;           // OFFER, ANSWER, ICE_CANDIDATE, CONTROL_COMMAND, REGISTER, DEVICE_LIST
+    private String fromDeviceId;   // 发送方设备ID
+    private String toDeviceId;     // 目标设备ID
+    private String deviceType;     // CONTROLLER 或 CONTROLLED
+    private String payload;        // JSON格式的信令数据（SDP/ICE/控制指令）
+
+    public SignalMessage() {}
+
+    public String getType() { return type; }
+    public void setType(String type) { this.type = type; }
+
+    public String getFromDeviceId() { return fromDeviceId; }
+    public void setFromDeviceId(String fromDeviceId) { this.fromDeviceId = fromDeviceId; }
+
+    public String getToDeviceId() { return toDeviceId; }
+    public void setToDeviceId(String toDeviceId) { this.toDeviceId = toDeviceId; }
+
+    public String getDeviceType() { return deviceType; }
+    public void setDeviceType(String deviceType) { this.deviceType = deviceType; }
+
+    public String getPayload() { return payload; }
+    public void setPayload(String payload) { this.payload = payload; }
+}