Update generated client from staging OpenAPI

[leo-notte]

Summary

• regenerate the Go API client from the current staging OpenAPI spec
• includes the new secrets API surface in generated client code

Test plan

• make check
• go test -short ./...

[greptile-apps]

Greptile Summary

This PR regenerates internal/api/client.gen.go from the staging OpenAPI spec to add a new Secrets API surface alongside the existing session and browser-automation endpoints.

• Adds four new operations — ListSecrets, StoreSecret, GetSecret, DeleteSecret — with full request builders, response parsers, result types, and a SecretNamespace enum (function_env, llm_provider).
• Existing session-management request builders are reordered in the file but their logic is unchanged.

Confidence Score: 5/5

The change is a mechanical code-generation update that follows established patterns and does not touch existing logic.

All changes are auto-generated from an OpenAPI spec and mirror the established patterns for request builders, response parsers, and result types throughout the file. No hand-written logic was modified and no existing call sites are affected.

No files require special attention beyond the minor spec-level inconsistency in SecretMetadata.LastUsedAt typing.

Important Files Changed

Filename	Overview
internal/api/client.gen.go	Regenerated Go client adds full Secrets CRUD surface including new types, request builders, result parsers, and interface methods; minor spec inconsistency in LastUsedAt typing and no accompanying tests.

Prompt To Fix All With AI

Fix the following 2 code review issues. Work through them one at a time, proposing concise fixes.

---

### Issue 1 of 2
internal/api/client.gen.go:2143
**`LastUsedAt` typed as `*string` instead of `*time.Time`**

`SecretMetadata.CreatedAt` is `time.Time`, but `LastUsedAt` is `*string`. If the server ever returns a timestamp here, callers will have to manually parse it — unlike every other timestamp field in the file. This looks like an inconsistency in the OpenAPI spec that leaked into the generated client; worth aligning the spec so the generator emits `*time.Time` here.

### Issue 2 of 2
internal/api/client.gen.go:8404-8423
**No tests added for new Secrets API surface**

This PR introduces four new API operations (`ListSecrets`, `StoreSecret`, `GetSecret`, `DeleteSecret`) but includes no unit or integration tests. Per the project's test guidelines, at least one integration test should accompany a major feature addition like a new API surface.
- Add a comment if the PR does n... ([source](https://app.greptile.com/review/custom-context?memory=instruction-0))

_{Reviews (2): Last reviewed commit: "Update generated client from staging Ope..." | Re-trigger Greptile}