fix pftools auth error (#58)

Author: freeznet

.gitignore

@@ -9,4 +9,5 @@ tmp/
 # Go
 vendor
 .cursor/
-agents/
+agents/
+.serena/

pkg/mcp/pftools/errors.go

@@ -19,3 +19,10 @@ func IsClusterUnhealthy(err error) bool {
 	}
 	return false
 }
+
+func IsAuthError(err error) bool {
+	if restErr, ok := err.(rest.Error); ok {
+		return restErr.Code == 403
+	}
+	return false
+}

pkg/mcp/pftools/manager.go

@@ -157,7 +157,7 @@ func (m *PulsarFunctionManager) updateFunctions() {
 		log.Printf("Failed to get functions list: %v", err)
 
 		// Check if this is a cluster health error and invoke callback if configured
-		if IsClusterUnhealthy(err) && m.clusterErrorHandler != nil {
+		if (IsClusterUnhealthy(err) || IsAuthError(err)) && m.clusterErrorHandler != nil {
 			go m.clusterErrorHandler(m, err)
 		}
 		return