fix(tui): show /browser connect progress like CLI

Return CLI-style browser connect status messages from the gateway and render them in the TUI so local Chrome launch attempts are visible instead of ending in a silent delayed failure.

ui-tui/src/gatewayTypes.ts

@@ -314,6 +314,7 @@ export interface ProcessStopResponse {
 
 export interface BrowserManageResponse {
   connected?: boolean
+  messages?: string[]
   url?: string
 }