KeiSeiKit-1.0/skills/test-matrix/phase-5-triage.md
Parfii-bot a4e667de10 KeiSeiKit-public — clean state
Single-commit clean baseline after security scrub of niche-tells,
project codenames, internal jargon, and contributor-email leaks.

Contents:
- 100 Rust crates (_primitives/_rust/)
- 37 agent manifests (_manifests/) + generated specs (_generated/)
- 67 user-invocable skills (skills/)
- 33 hooks (hooks/)
- Composition blocks (_blocks/)
- Documentation (docs/, README.md)
- TS adapter packages (_ts_packages/)
- Assembler (_assembler/)
- Roles (_roles/)
- Templates (_templates/)
- Forgejo CI (.forgejo/)

Author: Denis Parfionovich <info@greendragon.info>

License: see LICENSE.
2026-05-01 12:09:03 +08:00

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# Phase 5 — Crash / regression triage workflow
Every matrix paradigm produces artifacts when it fails: fuzz crashes,
shrunk property counterexamples, load-SLO violations, E2E traces,
mutation survivors. Without a triage runbook, those artifacts rot.
This phase writes `docs/testing/triage.md` so the next failure is
actionable in ≤ 15 min.
## 5a — Confirm runbook generation (AskUserQuestion)
```json
{
"questions": [
{
"question": "Write the triage runbook to docs/testing/triage.md?",
"header": "Triage",
"multiSelect": false,
"options": [
{"label": "Yes — full runbook", "description": "Per-paradigm crash / regression flow + artifact paths + commit template"},
{"label": "Yes — minimal", "description": "One-page checklist only; skip per-paradigm deep-dives"},
{"label": "Skip — team already has one", "description": "Finish without writing; final report notes the external link"}
]
}
]
}
```
## 5b — Runbook template (full)
For every selected paradigm in `MATRIX`, emit a section:
```
## <paradigm> failure triage
1. Artifact: <fuzz/artifacts/ | .proptest-regressions | load/reports/ | test-results/ | mutation-report/>
2. Reproduce locally: <exact command from phase-3 scaffold>
3. Minimize: <tmin / shrink / trace-viewer / bisect>
4. Write a failing regression test using the minimized input.
5. Fix root cause (never the symptom — see RULE: No Patching).
6. Re-run the matrix cell. Green = commit with `fix:` + reference artifact SHA.
7. If flaky (not deterministic): quarantine with a ticket, never `retry: 5`.
```
Per-paradigm specifics are pulled from the citing `_blocks/test-*.md`:
- fuzz → `cargo fuzz tmin` / atheris replay flow (block §crash-triage)
- property → commit the shrunk counterexample as a normal unit test
- load → re-baseline after each fix; one variable at a time
- e2e → open `playwright show-trace`; never add `waitForTimeout`
## 5c — Commit template
The runbook ends with a ready-to-copy commit template:
```
fix(<paradigm>): <one-line symptom>
Reproducer: <minimized artifact path + SHA>
Root cause: <1-2 sentences>
Regression test: <path to new permanent test>
See docs/testing/triage.md §<paradigm> for the workflow used.
```
## Verify-criterion
- `TRIAGE_DOC` is set to `docs/testing/triage.md` (or skipped with reason).
- Every `MATRIX` paradigm has a section in the runbook.
- Every section lists artifact path + reproduce command + regression-test
requirement + root-cause discipline + flake policy.
- Commit template present at end of doc.