Fix: Add retry logic to reconnect after connection failure

app/src/main/java/com/nexlab/openclaw/node/service/NodeService.kt

@@ -200,6 +200,16 @@ class NodeService : Service() {
                 Log.e(TAG, "Toast removed")
             } else {
                 Log.e(TAG, "Toast removed")
+                // Connection failed - retry after delay
+                Log.e(TAG, "Connection failed, scheduling retry in 3 seconds...")
+                scope.launch {
+                    delay(3000)
+                    if (ip.isNotBlank() && token.isNotBlank()) {
+                        val fullUrl = if (protocol == "WSS") "wss://$ip:$port" else "ws://$ip:$port"
+                        Log.e(TAG, "Retrying connection to: $fullUrl")
+                        startNode(fullUrl, token, nodeId)
+                    }
+                }
             }
         }