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codex/codex-rs
jif ea10ae7d0f Evaluate recent and character-routed skill selection (#38993)
## What changed

- Add shadow selectors that fuse recently invoked skills with character routing-card matches using reciprocal rank fusion.
- Add a second variant that also incorporates weighted lexical matches.
- Record both variants in the existing shadow-selection experiment, capped at 50 candidates.

## Testing

- Cover cold starts, duplicate removal, short exact matches, deterministic ranking, result limits, and truncation metadata.
- Extend the skills integration test to verify both selectors recover a skill invoked on an earlier turn.

GitOrigin-RevId: 4ff9e91da8cb49ecbce54ab8e760820616e1a1d3
2026-08-17 12:13:20 +00:00
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