Provide a bundled GUI client or a standalone desktop app instead of relying on heavy CLI setups

### What is your feature suggestion?

Setting up the environment for google-agents-cli on Windows is currently very friction-heavy for developers (managing Python versions, installing Google Cloud CLI separately, handling ADC authentication, and fighting PATH environment variables).
To make this amazing tool accessible to more creators, please consider productizing it into a standalone software/GUI. Instead of wrapping complex CLI dependencies that easily break on different OS platforms, a unified installer or an extension integrated directly into IDEs (like VS Code/Cursor) would dramatically improve the developer experience. Let's move away from environment setup hell!
### What will this enable you to do?

### Additional context

_No response_

Inizia esaminando la configurazione Windows attuale per google-agents-cli, inclusi Python, Google Cloud CLI, l’autenticazione ADC e i requisiti di PATH. Confronta i possibili ambiti —una GUI integrata, un installer autonomo o un’integrazione con VS Code/Cursor— e definisci un obiettivo concreto e i relativi criteri di completamento prima dell’implementazione.

Scritto dal modello di indicizzazione a partire dal testo della issue.