Files
codex/codex-rs/core/src/session
goodman-oai aef7d276a4 Support model catalog overrides for plugin guidance (#58894)
## What changed

- Add `model_messages.plugins` overrides for generic usage guidance, selected-plugin hints, and recommendation introductions, with independent fallback to bundled wording for missing or invalid fields.
- Validate text limits and required template placeholders while keeping plugin identities, available capabilities, and eligibility controlled by the client.
- Track generic guidance changes across model switches and session resume, emitting replacement or retirement notices and supporting legacy snapshots and retained history.

## Testing

Add unit and scenario coverage for sparse overrides, literal text preservation, template validation, UTF-8 size bounds, capability filtering, recommendation fallback, and guidance recovery after resume.

GitOrigin-RevId: 148b658c2d8490c9d0dc208addbee1be5342a5f5
2026-11-02 14:06:17 +00:00
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