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yao-meta-skill/evals/promotion_policy.md
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2026-04-01 07:06:16 +08:00

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# Promotion Policy
This policy defines when a description candidate or skill route is promotable.
## Goal
Promote only when a candidate is not just locally better, but measurably safer across route boundaries.
## Promotion Gates
### 1. Dev Ranking
Use `dev` only to rank candidates.
- optimize for fewer false positives
- then fewer false negatives
- then stronger near-neighbor performance
- then shorter wording
`dev` does not authorize promotion by itself.
### 2. Visible Holdout Non-Regression
The winner must not regress against the current description on visible holdout.
Required:
- no additional false positives
- no additional false negatives
### 3. Blind Holdout Non-Regression
The winner must not regress on blind holdout.
Required:
- no additional blind false positives
- no additional blind false negatives
### 4. Adversarial Holdout Non-Regression
The winner must survive harder route-collision prompts.
Required:
- no additional adversarial false positives
- no additional adversarial false negatives
- adversarial risk band should be `healthy` for shared or governed assets
### 5. Route Confusion Gate
If the skill belongs to a library with sibling skills, the route scorecard must stay clean.
Required:
- no misroutes in the tracked confusion set
- no ambiguous routes above the configured margin-warning threshold
### 6. Family Stability
Promotion should not hide a family-specific regression.
Required:
- no new failing blind families
- no new failing adversarial families
## Promotion Outcomes
### Promote
Promote when all gates pass.
### Keep Current
Keep the current description when:
- the candidate is only better on `dev`
- a holdout gate regresses
- route confusion becomes ambiguous
### Block
Block promotion when:
- adversarial risk moves to `overlap`
- a sibling route is stolen
- no-route prompts start routing into the skill
## Why This Exists
This policy prevents a meta-skill from looking “optimized” only because it overfit a small benchmark. A promotion is only credible when routing quality, route boundaries, and iteration evidence stay aligned.