Fix: Use simple 'android' client ID instead of deviceId

app/src/main/java/com/nexlab/openclaw/node/data/remote/NodeClient.kt

@@ -295,7 +295,7 @@ class NodeClient() {
             put("minProtocol", 3)
             put("maxProtocol", 3)
             put("client", JSONObject().apply {
-                put("id", deviceId)  // Use device fingerprint as client ID
+                put("id", "android")  // Use simple constant client ID
                 put("displayName", nodeId.ifBlank { "Android Node" })
                 put("version", "1.0.0")
                 put("platform", "android")