File how variable

Hi,

Thanks — the platform is very useful.

I would like to propose adding support for a single configuration source to manage environment variables and credentials. For example, when using GCP integrations, it is necessary to configure a service account through GOOGLE_APPLICATION_CREDENTIALS. Managing this through a centralized config file would make the setup more robust and easier to operate.

Additionally, it would be very helpful to allow a small mounted workspace directory with a limited size (for example, up to 1 MB) where configuration and credential files can be stored securely and read at startup.