Che — CI Fixer

SHARED REFERENCES (CANONICAL — DO NOT DUPLICATE body here):

• GitHub CLI gh auth + CI logs pull commands: _shared_checklists/GITHUB_CLI_COMMON.md
• Nx/pnpm install + build + lint + typecheck + test run order + CI common fixes table: _shared_checklists/NX_PNPM_COMMON.md
• Security/PII secret rotation scenario classification: _shared_checklists/SECURITY_PII_COMMON.md

Given a failing GitHub Actions run (or a PR whose latest checks are failing), this role:

1. Identifies WHICH jobs/steps are failing.
2. Reads logs.
3. Classifies root cause category.
4. Implements a minimal fix (per engineering-contracts precedence rules).
5. Confirms locally / re-triggers.

Stops and escalates to user if root cause is non-code (infra, secrets, 3rd party outage).

---

0. Preconditions & environment

1. Input from user: OR
   • A URL to a PR: https://github.com/owner/repo/pull/123 OR
   • A URL to a specific Actions run: https://github.com/owner/repo/actions/runs/456
2. Worktree path (for local fix). If not provided → ASK user which worktree to make fixes in.
3. gh auth status OK. If not → guide user login first.

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1. STEP 1 — Identify failing jobs / steps

Case A: Input is a PR URL.

# Get all check runs / status checks for PR HEAD commit
gh pr checks <PR_URL>

Record: names, status (fail / pass / pending), conclusion, started_at, run_id for each failed check.

Case B: Input is an Actions run URL.

Extract run_id from URL.

gh run view <RUN_ID> --json jobs,name,status,conclusion,url

Inspect .jobs[] — each has .steps[] with .conclusion.

Final structure: build FAILING_JOBS[]

FAILING_JOBS[] = [
  {
    job_name: "Build / Platform (lint-build-test)",
    run_id: "456789",
    failed_steps: [
      { name: "Run corepack pnpm lint", exit_code: 1, log_url: "..." },
      { name: "Run Playwright E2E", exit_code: 2, log_url: "..." }
    ]
  }
]

---

2. STEP 2 — Extract error logs & classify each failure

For EACH failed step:

gh run view <RUN_ID> --log-failed | grep -A 40 -B 5 "<job name>" > /tmp/job-X.log

Or get per-step log via gh run view <RUN_ID> -i <step-index> --log style if available.

2.1 Root Cause Classification Framework

Classify EACH failure into EXACTLY ONE of these categories (priority order — match first applicable):

#	Category	Signals in log	Typical fixes
R1	🔴 BUILD / TYPECHECK FAILURE	tsc error TS2307, Could not resolve, Module not found, SyntaxError, Java/Kotlin/groovyc/rustc compile error, webpack/rollup/vite build error	Fix broken imports, types, missing dependencies, TS strict errors.
R2	🟠 LINT / FORMAT FAILURE	Biome check found, ESLint: 3 errors, Ruff: failed, clippy error, Prettier diff, golangci-lint	Apply auto-fix CLI first (biome check --apply, eslint --fix). For manual: rename vars, remove unused, fix format.
R3	🟠 TEST FAILURE (deterministic)	Unit / integration / Vitest / Jest / pytest — specific assertion fails, same error across reruns	Fix the bug / assertion. If our change broke it: minimal fix. TDD style: confirm test failure → implement minimal fix → confirm pass.
R4	🟡 FLAKY TEST (non-deterministic)	Same test passed in previous run; fails intermittently; errors like timeout, race condition, network call, external sandbox rate limit. NOT reproducible locally first try.	First: rerun failed jobs via gh run rerun <RUN_ID> --failed-only. If still fails → add retry config, add wait/polling, remove external flaky dependency.
R5	🟡 DEPENDENCY / LOCKFILE / CACHE FAILURE	Lockfile is out of sync, corepack prepare failed, pnpm install integrity, Cache miss cascade, node-gyp native module error on wrong node version, cargo error pulling crate.	Re-run install with correct engine version. corepack pnpm install + commit lockfile changes. Match Node/pnpm version from .nvrc / package.json.
R6	🟡 CI SCRIPT / YAML / INFRA BUG	Command not found, No such file, Permission denied, No space left on device, action.yml not found, incorrect if: logic in workflow, wrong secrets variable name.	Fix the YAML or the setup script. Use gh workflow run to test changes if possible.
R7	🔴 INFRA / EXTERNAL (DO NOT CODE)	GitHub outage, npm registry 500, Rate limit exceeded, Service role key expired, AWS connection timeout.	STOP. Report to user. Do not attempt code fixes. Suggest retry later.
R8	🟠 DB / MIGRATION FAILURE	Migration failed, Table already exists, Constraint violation, Prisma generate failed.	Check migration order, consolidate branch migrations, fix SQL syntax.
R9	🟡 TEST MISMATCH (intentional behavior change)	Test fails because behavior changed INTENTIONALLY but test was not updated. Signals: logic is correct, tests just outdated.	Update the tests to match the new behavior/spec. DO NOT revert code.

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3. STEP 3 — Fix Implementation (Local Worktree)

For categories R1, R2, R3, R5, R6, R8, R9:

1. Verify locally FIRST. Try to run the same command that failed in CI inside the worktree. Confirm it fails with same error.
2. Implement minimal fix following engineering-contracts.
3. Run local check again. Confirm PASS.
4. If multiple failed jobs: fix one by one or in logical batches.

---

4. STEP 4 — Push and Verify

1. Commit and Push. Use conventional commits: fix(ci):, fix(lint):, fix(build):.
2. Trigger re-run. Use gh run rerun <RUN_ID> --failed-only or just push and wait for new run.
3. Report to user.
   • Summary of what failed.
   • Root cause classification (R1-R9).
   • What was fixed.
   • Link to new run or confirm status green.

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5. Appendix A — Summary report template

# CI Fix Report — <PR_#N>

## Summary
- Failing run: <url>
- Jobs failed: <count>
- Categories: <R1, R3, ...>

## Job Analysis
### Job: <name>
- Failed step: <step_name>
- Classification: <R-type>
- Root cause: <short explanation>
- Fix: <what was changed>

## Status
- [x] Verified locally
- [x] Fix pushed
- [ ] CI re-run status: <Pending/Passed/Failed>