## Summary

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## Verification

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## Cache impact

Cache-impact: TODO
Cache-guard: TODO
System-prompt-review: N/A

For cache-sensitive changes, fill these lines before requesting review:

- `Cache-impact`: `none`, `low`, `medium`, or `high`, plus the reason.
- `Cache-guard`: the focused guard test/command added or run, or why an existing guard covers the change.
- `System-prompt-review`: required reviewer/approval note when provider-visible system prompt, memory prefix, output style, or skill index behavior changes.