Fix: Increase startup delay to 2s

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

@@ -160,7 +160,7 @@ class NodeService : Service() {
                 } catch (e: Exception) {}
                 
                 scope.launch { startNode(fullUrl, token, nodeId) }
-                }, 500) // 500ms delay to let startForeground settle
+                }, 2000) // 2s delay to let startForeground settle
             }
             "STOP" -> {
                 scope.launch { stopNode() }