# Step 2: regression-thresholds

## Read First
- /AGENTS.md
- /PLAN.md
- /PROGRESS.md
- /docs/HARNESS.md
- /docs/IMPLEMENTATION_PLAN.md
- /docs/PRD.md
- /phases/7-mvp-quality-hardening/step1.md

## Task
Define MVP regression thresholds for the sample corpus.

Thresholds should distinguish mandatory fast validation from slower/manual quality checks.

## Sprint Contract
- Done means: MVP pass/fail criteria are encoded in tests or documented commands and tied to sample metadata traits.
- Hard thresholds: mandatory validation remains runnable on the local machine; slow tests are opt-in; failed quality areas are not masked.
- Files owned: `tests/`, `scripts/`, sample metadata updates if needed, `PROGRESS.md`, phase index.
- Dependencies: Quality metrics report.

## Acceptance Criteria
```powershell
python scripts\validate_workspace.py
.\venv\python.exe -m pytest tests
```

## Verification
1. Run the acceptance commands.
2. Confirm slow tests are documented separately if needed.
3. Update `PROGRESS.md` and this phase index.

## Do Not
- Do not make local validation unusably slow.
- Do not turn all failures into warnings.
- Do not remove sample coverage for Korean paths or formulas.