alexsong-oai be7cd6fd9e Add a credential file override for GCP provider authentication (#57188) ...

## What changed

Support `model_providers.gcp.credential_file` as an absolute path to a Google Application Default Credentials (ADC) file. Pass it as `GOOGLE_APPLICATION_CREDENTIALS` in the provider auth command's environment, retaining the override for token refreshes without changing the parent process environment.

Validate the path before merging GCP defaults and preserve the setting in thread configuration serialization.

## Testing

Add coverage for invalid paths, configuration round trips, separate provider token caches, and credential overrides retained after a `401` refresh. Include a Windows regression test for credential paths containing command metacharacters.

GitOrigin-RevId: d9a1d4b3775a9a4c4325dddaa153d92a2d1430a0

2026-10-26 18:33:05 +00:00

..

examples

Add remote thread config loader protos (#18892)

2026-04-23 10:06:05 -07:00

scripts

Add remote thread config loader protos (#18892)

2026-04-23 10:06:05 -07:00

src

Add a credential file override for GCP provider authentication (#57188)

2026-10-26 18:33:05 +00:00

BUILD.bazel

Embed defaults in the packaged config layer (#38179)

2026-08-12 12:15:47 +00:00

Cargo.toml

Require managed configuration from the configured server (#56055)

2026-10-22 02:15:00 +00:00

defaults.toml

Make environment context date and timezone configurable (#52164)

2026-10-08 16:27:10 +00:00