fix(repo-review): fail closed on incomplete docs drift

[stranske]

Summary

• size the sequential docs-drift subprocess timeout from the selected configured document workload instead of a fixed 30-minute fleet cap
• scope the scanner to the coordinator's selected repos and require complete, zero-error results before atomically publishing docs-drift-scan.json
• fail closed before notify on docs-drift or final-evaluator failure, write repo-review-run-failure.json, and quarantine stale publishable outputs
• make the standalone scanner exit nonzero after recording any per-document error, including missing repo roots and missing config paths

Why

The 2026-09-04/05 full weekly rerun completed all 11 repositories and the final evaluator, then the sequential 33-document drift scan exceeded its fixed 1,800-second outer timeout. The coordinator logged that as non-fatal, retained the June 3 scan, and still exited successfully. This PR removes that false-success path. With the current active registry, the derived outer bound is 20,700 seconds (33 x 600 + 900).

Validation

• python -m pytest tests/scripts/test_repo_review*.py tests/scripts/test_upload_repo_review_issues.py -q — 450 passed
• python -m pytest tests/scripts/test_repo_review_coordinator.py tests/scripts/test_repo_review_docs_drift_scan.py -q — 59 passed
• python -m ruff check scripts/repo_review_coordinator.py scripts/repo_review_docs_drift_scan.py tests/scripts/test_repo_review_coordinator.py tests/scripts/test_repo_review_docs_drift_scan.py — passed
• python -m ruff format --check scripts/repo_review_coordinator.py scripts/repo_review_docs_drift_scan.py tests/scripts/test_repo_review_coordinator.py tests/scripts/test_repo_review_docs_drift_scan.py — passed
• scanner dry-run for stranske/Workflows — 13 configured documents, zero errors

Summary by CodeRabbit

• Reliability

  • Docs-drift scans now use workload-based timeouts and require complete, error-free results.
  • Missing inputs, incomplete output, scan errors, and evaluator failures now stop publication and notifications.
  • Invalid or stale outputs are quarantined to prevent failed reviews from being published.

• Diagnostics

  • Scan results now include explicit errors for missing repositories and documents.
  • Failed scans return a nonzero status with a summary of detected issues.

• Documentation

  • Updated repository review guidance for required scan evidence, recovery, and failure handling.

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📥 Commits

Reviewing files that changed from the base of the PR and between 6834ef4 and 3a94b8c.

📒 Files selected for processing (2)

• scripts/repo_review_coordinator.py
• tests/scripts/test_repo_review_coordinator.py

📝 Walkthrough

Walkthrough

The review workflow now calculates docs-drift timeouts from document count, validates complete zero-error scan output, publishes results atomically, and fails closed on invalid evidence or final-evaluator failures.

Changes

Docs-drift evidence and failure handling

Layer / File(s)	Summary
Docs-drift scan contract and timeout calculation scripts/repo_review_coordinator.py, scripts/repo_review_docs_drift_scan.py, config/repo_review_automation.toml, tests/scripts/*	The scanner records errors for configured documents and returns status 1 when errors exist. The coordinator validates scan output and calculates timeouts from selected document counts and configured limits.
Validated docs-drift publication scripts/repo_review_coordinator.py, tests/scripts/test_repo_review_coordinator.py	The coordinator writes scan results to a temporary path, validates freshness, coverage, counters, and errors, then promotes valid output. Invalid output and stale aggregate files are quarantined.
Final-evaluator fail-closed handling scripts/repo_review_coordinator.py, config/repo_review_automation.toml, tests/scripts/test_repo_review_coordinator.py	Final-evaluator failures now write cycle failure metadata, quarantine publishable outputs, and stop downstream scans and notifications.
Workflow failure and recovery rules config/repo_review_automation.toml, docs/ops/REPO_REVIEW_PROCESS.md, tests/scripts/*	Configuration and process documentation define required docs-drift evidence, fatal failure conditions, quarantine behavior, and full-run recovery requirements.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Merge Risk: 🟡 Moderate · up to 6834e

Explicitly selecting a non-active repository can incorrectly fail an otherwise healthy docs-drift run, quarantine publishable outputs, and suppress notifications. Align the expected count with the scanner filter and cover a nonzero successful run before merging.

Sequence Diagram(s)

sequenceDiagram
  participant RepoReviewCoordinator
  participant DocsDriftScanner
  participant ScanOutput
  participant PostProcessing
  RepoReviewCoordinator->>DocsDriftScanner: Run selected repositories with calculated timeout
  DocsDriftScanner->>ScanOutput: Write document results and error counts
  RepoReviewCoordinator->>ScanOutput: Validate complete zero-error coverage
  RepoReviewCoordinator->>PostProcessing: Promote valid output and continue
  RepoReviewCoordinator->>PostProcessing: Quarantine invalid output and stop

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🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 29.41% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 34 functions across 4 files. (2 skipped: …	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies the main change: repo-review now fails closed when docs-drift results are incomplete. It is concise and specific.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

Docstring coverage is 29.41% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 34 functions across 4 files. (2 skipped: 2 unsupported.)

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[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-05T07:09:23.859805Z	708142d	PR opened

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[agents-workflows-bot]

Workflow source detected

PR #3395 now has valid workflow source context (origin=local_request).

No linked GitHub issue is required for this PR.

[Copilot]

🟢 Approval recommended

The changes consistently enforce fail-closed semantics with updated tests covering timeout sizing, atomic publish, and quarantine behavior.

Pull request overview

This PR tightens the repo-review “docs drift” evidence pipeline so runs fail closed when the docs-drift scan is incomplete, times out, or records any per-document error—preventing stale docs-drift-scan.json from being treated as a successful cycle artifact.

Changes:

• Derives the coordinator’s docs-drift subprocess timeout from the selected configured document workload (per-doc budget + buffer, with a minimum).
• Requires a complete, zero-error docs-drift scan before atomically publishing docs-drift-scan.json, and aborts the cycle (with quarantine + failure marker) on docs-drift or final-evaluator failure.
• Makes the standalone docs-drift scanner exit nonzero when any configured document records an error, including missing repo roots/config paths.

File summaries

File	Description
tests/scripts/test_repo_review_docs_drift_scan.py	Adds coverage for per-doc error recording (missing repo roots) and nonzero exit behavior when any doc errors.
tests/scripts/test_repo_review_coordinator.py	Updates coordinator tests for new docs-drift output shape, fail-closed behavior, quarantine set, and timeout sizing.
scripts/repo_review_docs_drift_scan.py	Records per-doc errors more completely (including missing repo roots/config path issues) and exits nonzero when errors are present.
scripts/repo_review_coordinator.py	Computes docs-drift timeout from selected workload, validates scan completeness/zero-errors, publishes atomically, and fails closed with quarantines + failure marker.
docs/ops/REPO_REVIEW_PROCESS.md	Documents the new fail-closed behavior and derived timeout model for sequential docs-drift scans.
config/repo_review_automation.toml	Updates operational notes to reflect derived timeout semantics and fatal failure behavior for docs-drift evidence.

Review details

• Files reviewed: 6/6 changed files
• Comments generated: 0
• Review effort level: Lite

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[stranske-keepalive]

Automated Status Summary

Head SHA: 608b91e
Latest Runs: ⏳ pending — Gate
Required contexts: summary
Required: core tests (3.12): ⏳ pending, core tests (3.13): ⏳ pending, docker smoke: ⏳ pending, gate: ⏳ pending

Workflow / Job	Result	Logs
(no jobs reported)	⏳ pending	—

Coverage Overview

• Coverage history entries: 0

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Scope

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Acceptance criteria

• No acceptance criteria defined

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Actionable comments posted: 2

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Inline comments:
In `@scripts/repo_review_coordinator.py`:
- Around line 1204-1207: Update the expected document count calculation in the
coordinator around configured_docs_drift_doc_count so it uses only repositories
included in the scanner’s active_repos filter, excluding registered repositories
with non-active status while preserving the existing target repository selection
for scanning.

In `@tests/scripts/test_repo_review_coordinator.py`:
- Around line 227-229: The run-level docs-drift integration tests need a case
with a nonzero expected document count. Add a test configuring documents for the
selected repository, write matching total_docs_scanned through
_write_docs_drift_output, and assert docs-drift-scan.json is promoted and notify
runs, covering the active-repository filtering path.

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📥 Commits

Reviewing files that changed from the base of the PR and between ee5a12c and 6834ef4.

📒 Files selected for processing (6)

• config/repo_review_automation.toml
• docs/ops/REPO_REVIEW_PROCESS.md
• scripts/repo_review_coordinator.py
• scripts/repo_review_docs_drift_scan.py
• tests/scripts/test_repo_review_coordinator.py
• tests/scripts/test_repo_review_docs_drift_scan.py

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[github-actions]

Provider Comparison Report

Provider Summary

Provider	Model	Verdict	Confidence	Summary
openai	gpt-5.6-terra	PASS	90%	The changes address the fail-open docs-drift path comprehensively. The coordinator now derives the scanner timeout from the selected configured document workload using per-document, minimum, and bu...
anthropic	claude-sonnet-5	PASS	60%	The PR modifies config, documentation, coordinator/scanner scripts, and tests to implement workload-based docs-drift timeouts and fail-closed behavior (quarantine stale outputs, write failure marke...

📋 Full Provider Details (click to expand)

openai

• Model: gpt-5.6-terra
• Verdict: PASS
• Confidence: 90%
• Scores:
  • Correctness: 9.0/10
  • Completeness: 9.0/10
  • Quality: 9.0/10
  • Testing: 9.0/10
  • Risks: 9.0/10
• Summary: The changes address the fail-open docs-drift path comprehensively. The coordinator now derives the scanner timeout from the selected configured document workload using per-document, minimum, and buffer settings rather than a fixed fleet-wide timeout. Docs-drift output is treated as publishable only after successful subprocess completion, complete expected-document coverage, valid output, and zero errors; otherwise the run fails before notification, writes a failure marker, and quarantines publishable outputs. The standalone scanner records and returns nonzero for per-document failures, including missing repository roots and configuration/document inputs. Documentation updates describe the required evidence, timeout model, recovery behavior, and fatal failure handling. The added coordinator and scanner tests substantially cover the new timeout calculation, incomplete/error scan rejection, failure marker/quarantine behavior, and scanner error exit semantics. The implementation is appropriately defensive and uses atomic publication to avoid exposing partial scan results.

anthropic

• Model: claude-sonnet-5
• Verdict: PASS
• Confidence: 60%
• Scores:
  • Correctness: 7.0/10
  • Completeness: 7.0/10
  • Quality: 7.0/10
  • Testing: 7.0/10
  • Risks: 6.0/10
• Summary: The PR modifies config, documentation, coordinator/scanner scripts, and tests to implement workload-based docs-drift timeouts and fail-closed behavior (quarantine stale outputs, write failure markers, block notify) as described in the acceptance criteria. The visible portions of the diff (config and docs) are internally consistent with the stated goals: the docs_drift_per_doc_seconds/minimum/buffer config replaces the old fixed cap, and documentation describes atomic publishing gated on complete zero-error scans plus quarantine/failure-marker semantics for docs-drift and final-evaluator failures. Test files were substantially expanded, suggesting genuine coverage of the new failure paths. However, the actual Python implementation diff for the coordinator and scanner scripts was truncated in the provided context, limiting direct verification of logic correctness (e.g., exact atomic publish sequencing, scoping to selected repos, nonzero exit behavior on scanner errors). Given the consistency between config/docs/tests and passing CI across all three workflows, this appears to be a legitimate, complete implementation, but full independent code-level verification of the core script changes was not possible from the truncated diff.
• Concerns:
  • The full diff for scripts/repo_review_coordinator.py (+261/-21) and scripts/repo_review_docs_drift_scan.py (+27/-8) was truncated in the review context, so the actual implementation of atomic publish, quarantine, and fail-closed logic could not be directly inspected — assessment relies on config/doc changes and test file sizes as proxies.
  • The workload-based timeout formula (per-doc600 + 900, min 1800) is correctly reflected in config/repo_review_automation.toml and matches the PR's stated math (33600+900=20700), but correctness of the coordinator's selection of 'configured docs' scoped to chosen repos can't be fully verified from the visible diff.
  • Documentation updates (REPO_REVIEW_PROCESS.md, config comments) are internally consistent with the stated fail-closed behavior (quarantine, repo-review-run-failure.json, atomic publish gated on zero errors), which is a good sign of intentional design.
  • Test files were substantially expanded (269 and 77 new lines) which strongly suggests corresponding new code paths for failure handling, atomic publish, and nonzero exit codes were added and exercised, but exact coverage of edge cases (missing repo roots, missing config paths) can't be independently confirmed from the truncated diff.
  • All CI workflows (gate, smoke, selftest including Python/JS tests) passed on the merge commit, which is a positive signal of at least surface-level correctness and no regressions.

Agreement

• Verdict: PASS (all providers)

Disagreement

Dimension	openai	anthropic
Correctness	9.0/10	7.0/10
Completeness	9.0/10	7.0/10
Quality	9.0/10	7.0/10
Testing	9.0/10	7.0/10
Risks	9.0/10	6.0/10

Unique Insights

• openai: The changes address the fail-open docs-drift path comprehensively. The coordinator now derives the scanner timeout from the selected configured document workload using per-document, minimum, and buffer settings rather than a fixed fleet-wide timeout. Docs-drift output is treated as publishable on...
• anthropic: The full diff for scripts/repo_review_coordinator.py (+261/-21) and scripts/repo_review_docs_drift_scan.py (+27/-8) was truncated in the review context, so the actual implementation of atomic publish, quarantine, and fail-closed logic could not be directly inspected — assessment relies on config/doc changes and test file sizes as proxies.; The workload-based timeout formula (per-doc600 + 900, min 1800) is correctly reflected in config/repo_review_automation.toml and matches the PR's stated math (33600+900=20700), but correctness of the coordinator's selection of 'configured docs' scoped to chosen repos can't be fully verified from the visible diff.; Documentation updates (REPO_REVIEW_PROCESS.md, config comments) are internally consistent with the stated fail-closed behavior (quarantine, repo-review-run-failure.json, atomic publish gated on zero errors), which is a good sign of intentional design.; Test files were substantially expanded (269 and 77 new lines) which strongly suggests corresponding new code paths for failure handling, atomic publish, and nonzero exit codes were added and exercised, but exact coverage of edge cases (missing repo roots, missing config paths) can't be independently confirmed from the truncated diff.; All CI workflows (gate, smoke, selftest including Python/JS tests) passed on the merge commit, which is a positive signal of at least surface-level correctness and no regressions.

🔍 LangSmith Traces

• openai
• anthropic