[codex] Apply audit remediation

[Pigbibi]

Summary

• apply the 2026-06-10 audit remediation items
• tighten GitHub workflow permissions, job timeouts, and scheduled/manual concurrency where applicable
• add focused characterization or governance checks where this repository has runtime-facing changes

Validation

• targeted local tests and lint checks were run before publishing
• workflow governance scan passed across the remediation scope
• git diff --check passed across the remediation scope

See local audit report: QuantStrategyLab-review-2026-06-10.md.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Raise deploy job timeout above commit wait

When env sync is enabled and CLOUD_RUN_ENV_SYNC_WAIT_FOR_COMMIT is left at its default true value, this workflow's later wait step deliberately allows up to 1800 seconds before failing while it polls for the deployed commit (sync-cloud-run-env.yml lines 492-500). With the new job timeout capped at 20 minutes, GitHub can terminate the job before that existing 30-minute wait has a chance to complete, so slower but still-acceptable Cloud Run deployments will fail prematurely before env sync/scheduler steps run.

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