Files
kandev/docs/plans/pr-documentation-coverage/plan.md
T
2026-09-13 05:24:45 +01:00

5.6 KiB

created, status, requirements, system_design, legacy_specs
created status requirements system_design legacy_specs
2026-09-10 done
REQ-CI-PR-DOCS-001
REQ-CI-PR-DOCS-002
REQ-CI-PR-DOCS-003
../../specs/ci/system-design/pull-request-documentation-coverage.md

Implementation plan: PR documentation coverage

Overview

Build a deterministic coverage validator, integrate PR status reporting, then add merge-queue evaluation and contributor guidance. The CI system owns this package because it controls repository checks and label exceptions.

Scope

In scope: narrow exemptions, linked artifact validation, the exact no-docs-allow override, current-revision statuses, queue compatibility, and actionable summaries.

Out of scope: AI classification, application UI, automatic label management, publishing a PR, and live ruleset mutations. Public user documentation remains governed by the existing contribution checklist.

Technical approach

Use the proposed .github/scripts/pr-docs.cjs module for pure policy functions and bounded GitHub reads. Use .github/workflows/pr-docs.yml for base-controlled execution and the PR documentation coverage commit status. Reuse the existing Node runtime from GitHub-hosted runners and the built-in test runner; no pnpm dependency installation is needed. Register Node and workflow contract tests in .github/workflows/lint-action-pinning.yml.

Existing patterns: .github/workflows/pr-size-label.yml for metadata pagination, .github/scripts/pr-size-label-workflow-contract_test.py for workflow checks, and docs/ci-merge-queue.md for required-check rollout constraints.

Tests

All named test suites below are proposed files.

Criteria Evidence
AC-CI-PR-DOCS-001.2 through .6 pr-docs.test.cjs: classification and artifact graph fixtures
AC-CI-PR-DOCS-001.1; AC-CI-PR-DOCS-002.1 through .4 Fake GitHub adapter exercises draft/fork events and label transitions
AC-CI-PR-DOCS-003.1 through .3 API failures, pagination caps, stale head/label reads, path and content restrictions
AC-CI-PR-DOCS-003.4 through .5 Per-member queue evaluation, active prefix reevaluation, mismatched queue boundaries, override removal, and rollout checklist

Use a representative #3137 fixture: fix(worktree) with runtime recovery paths and no artifacts fails. Do not fetch the live PR in unit tests.

End-to-end evidence

No application browser flow changes. The workflow contract and mocked API tests run locally. After deployment, record real GitHub run URLs for an uncovered PR, a covered PR, an exempt PR, a fork, override addition/removal without pushes, and a merge group. Verify one member's documents or override cannot satisfy another member. Live smoke tests and required-check activation are deployment steps, not completed local evidence.

Work orders

Execute sequentially. No subagents are authorized.

Verification results

Task 01's 2026-09-13 regression fix reuses requirement searches and directory listings within each exact-head snapshot. Its deterministic quota regression now uses three searches for six work orders. All 50 Node tests, five workflow contract tests, documentation catalog/specification checks, and whitespace checks pass. A GET-only evaluation of exact PR #3626 head 93abff34efe8c9ab2bec68acb8e6aba1eb2a23d4 returned covered with three searches and no failed requests. See Task 01 for red/green evidence and limits. Consumption by trusted main and the new PR's CI/review gates remain delivery work; no status override or merge is claimed.

Design validation on 2026-09-10:

  • python3 scripts/lint-spec-files.test.py: 36 tests passed.
  • python3 scripts/lint-spec-files.py --all: passed.
  • git diff --check -- docs/specs docs/decisions docs/plans/pr-documentation-coverage: passed.
  • git status --short -- docs/plans/pr-documentation-coverage: confirmed the new package is present and untracked.

Implementation is complete. Live GitHub smoke-test evidence and required-check activation remain deployment steps and are not claimed by this change.

Implementation verification on 2026-09-10:

  • node --test .github/scripts/pr-docs.test.cjs: 35 tests passed.
  • python3 .github/scripts/pr-docs-workflow-contract_test.py: 5 tests passed.
  • python3 .github/scripts/lint-action-pinning_test.py: 9 tests passed.
  • python3 .github/scripts/lint-action-pinning.py: 24 workflows passed.
  • python3 scripts/lint-spec-files.py --all: passed.
  • zizmor .github/workflows/pr-docs.yml: no findings.
  • git diff --check: passed.

Repository-wide zizmor .github/workflows still reports existing findings in unrelated workflows; the new workflow has no reported findings.

Risks

  • Conservative defaults require labels for some small fixes, refactors, and dependency manifest changes.
  • The target-branch event queue retains up to 100 pending runs; higher bursts can still cancel new runs.
  • Structural validation cannot establish semantic relevance or planning chronology.
  • Merge queue boundary resolution needs real payload validation before mandatory rollout.
  • GitHub label/status publication is eventually consistent.
  • Adding a required status is an administrator operation separate from merging workflow files.

References