Individual skill
qp-regress
Regression stage of QP — re-executes a previous run's test cases unchanged, computes surface_reach (how many TCs left the entry screen, as a ratio over ALL TCs), and reports the per-TC delta against the earlier run so a "no change" claim is per case, not an aggregate. Triggers on "did anything regress since last run", "re-run last week's QA pass", "compare this run with the previous one", "회귀 확인해줘", "지난 런이랑 비교해줘".
plugins/fh-qp/skills/qp-regress/SKILL.md
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# qp-regress — Regression (re-run unchanged → surface_reach → delta)
Input: a baseline `qp/run/<ts>/` and the same `qp/plan/tcs.tsv`. Output: `qp/regress/<ts>/`.
## 1. Re-run unchanged
Execute the baseline's TCs with `qp-run` **without editing them**. Editing a TC to make it pass is a new run, not a regression — say so if the user asks for it.
## 2. surface_reach — did the batch leave the entry screen?
```
bash plugins/fh-qp/scripts/qp_tools.sh surface-reach qp/run/<new-ts>/evidence.tsv
```
| result | meaning |
|---|---|
| `REACHED n/n` | every TC observed a screen other than the modal (entry) one |