Celia Chen 51fdc35945 chore: remove unused Bedrock auth lazy loading (#18948)
## Summary

The Bedrock Mantle SigV4 auth provider currently looks like it can
lazily load `AwsAuthContext`, but the provider is only constructed after
`resolve_auth_method` has already loaded that context. Because
`with_context` always pre-populates the `OnceCell`, the
`get_or_try_init` fallback is unused in normal operation and makes the
provider lifecycle harder to reason about.

This change removes that dead lazy-loading path and makes the actual
behavior explicit:

- `BedrockAuthMethod::AwsSdkAuth` carries only the resolved
`AwsAuthContext`.
- `BedrockMantleSigV4AuthProvider` stores the resolved context directly.
- request signing uses the stored context without going through
`OnceCell`.

The existing eager AWS auth resolution behavior is unchanged; this is a
simplification of the provider state, not a behavior change.

## Testing

- `cargo shear`
- `cargo test -p codex-model-provider`
- `just bazel-lock-check`
51fdc35945 · 2026-04-22 05:01:22 +00:00
5,662 Commits
2026-04-14 01:45:41 +00:00
2026-03-26 16:50:07 -07:00
2025-04-16 12:56:08 -04:00
2025-04-16 12:56:08 -04:00
2026-04-07 10:55:58 -07:00

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