## What changed
- Move `Provider` and `RetryConfig` into `codex-client`, retaining re-exports from `codex-api`, and switch `codex-model-provider-info` to depend on `codex-client`.
- Move feature-state metric emission into `codex-core`, preserving its behavior while removing the `codex-features` dependency on `codex-otel`.
- Explicitly enable TLS features for `tonic` in `codex-config` and `reqwest` in `codex-http-client`.
- Enable `png`'s `zlib-rs` feature directly in `codex-utils-image` to keep encoded PNG bytes stable when WebSocket dependencies are absent.
GitOrigin-RevId: 91fd63ab01b55d516b3e80e3644d06af8d5a01f6
