Code Review

Ported from oh-my-codex code-review. OMX runtime conventions ($macro invocation, omx CLI, .omx/ state directory) are replaced with WorkBuddy idioms (Skill tool, Agent tool, task list, .workbuddy/memory).

Code Review Skill

Conduct a thorough code review for quality, security, and maintainability with severity-rated feedback.

When to Use

• User requests "review this code", "code review".
• Before merging a pull request.
• After implementing a major feature.
• User wants a quality assessment.

Behavior

• Default to outcome-first reporting: state the target result, evidence, validation status, and stop condition before adding process detail.
• If correctness depends on additional inspection, retrieval, execution, or verification, keep using the relevant tools until the review is grounded; stop once enough evidence exists.
• Continue through clear, low-risk, reversible next steps automatically; ask the user only when the next step is materially branching, destructive, credentialed, external-production, or preference-dependent.

Workflow — Two Parallel Lanes

Delegate to two independent agents via the Agent tool, run in parallel, for a two-lane review:

1. Identify Changes

   • Run git diff to find changed files.
   • Determine scope of review (specific files or entire PR).

2. Launch Parallel Review Lanes (use the Agent tool, two calls in one message)

   • Code-reviewer lane — owns spec compliance, security, code quality, performance, and maintainability findings. Prompt it to act as a senior code reviewer.
   • Architect lane — owns the devil's-advocate / design-tradeoff perspective. Prompt it to act as a skeptical architect.
   • Both lanes run on a clean context with explicit scope and artifacts, and produce distinct outputs before final synthesis.
   • If either lane cannot be launched or does not return evidence, report independent review unavailable; do not substitute your own authoring lane, and do not approve or mark the review merge-ready.

3. Review Categories

   • Security — hardcoded secrets, injection risks, XSS, CSRF.
   • Code Quality — function size, complexity, nesting depth.
   • Performance — algorithm efficiency, N+1 queries, caching.
   • Best Practices — naming, documentation, error handling.
   • Maintainability — duplication, coupling, testability.

4. Severity Rating

   • CRITICAL — security vulnerability (must fix before merge).
   • HIGH — bug or major code smell (should fix before merge).
   • MEDIUM — minor issue (fix when possible).
   • LOW — style/suggestion (consider fixing).

5. Architectural Status Contract

   • CLEAR — no unresolved architectural blocker was found.
   • WATCH — non-blocking design/tradeoff concern that must appear in the final synthesis.
   • BLOCK — unresolved design concern that prevents a merge-ready verdict.

6. Specific Recommendations

   • File:line locations for each issue.
   • Concrete fix suggestions.
   • Code examples where applicable.

7. Final Synthesis

   • Combine the code-reviewer recommendation and the architect status into one final verdict.
   • Approval requires explicit evidence from both independent lanes; missing or failed delegation is a blocking unavailable-review state, not an approval fallback.
   • Deterministic merge gating rules:
     • If architect status is BLOCK, final recommendation is REQUEST CHANGES.
     • Else if code-reviewer recommendation is REQUEST CHANGES, final recommendation is REQUEST CHANGES.
     • Else if architect status is WATCH, final recommendation is COMMENT.
     • Else final recommendation follows the code-reviewer lane.
   • The final report must make architect blockers impossible to miss.

Agent Delegation

Do not self-review as a fallback. If a lane is missing, unavailable, skipped, or fails, emit a clear unavailable-review result and block approval until independent lane evidence exists.

Spawn the two lanes like this (parallel Agent tool calls):

Agent(code-reviewer lane):
  "Act as a senior code reviewer. Review the changes in <git diff / specific files> for
   quality, security, and maintainability.
   Checklist: OWASP Top 10 security, complexity/duplication, N+1/efficiency, naming/docs/
   error handling, coupling/testability.
   Output: files reviewed count, issues by severity (CRITICAL/HIGH/MEDIUM/LOW), specific
   file:line locations, fix recommendations, and an approval recommendation
   (APPROVE / REQUEST CHANGES / COMMENT)."

Agent(architect lane):
  "Act as a skeptical architect reviewing the same changes from the architecture/tradeoff
   perspective. Focus on system boundaries/interfaces, hidden coupling, long-term
   maintainability risks, and the strongest counterargument against approving as-is.
   Output: Architectural Status (CLEAR / WATCH / BLOCK), file:line evidence, and a concrete
   tradeoff/design recommendation."

Run both lanes in parallel, then synthesize with the deterministic rules above.

Output Format

CODE REVIEW REPORT
==================

Files Reviewed: 8
Total Issues: 12
Architectural Status: WATCH

CRITICAL (0)
-----------
(none)

HIGH (0)
--------

MEDIUM (7)
----------
1. src/api/auth.ts:42
   Issue: Email normalization logic is duplicated instead of reusing the shared helper
   Risk: Validation rules can drift between authentication paths
   Fix: Route both paths through the shared normalization helper
...

LOW (5)
-------

ARCHITECTURE WATCHLIST
----------------------
- src/review/orchestrator.ts:88
  Concern: Review result synthesis relies on implicit ordering rather than an explicit blocker contract
  Status: WATCH
  Recommendation: Define deterministic merge gating before expanding reviewers

SYNTHESIS
---------
- code-reviewer recommendation: COMMENT
- architect status: WATCH
- final recommendation: COMMENT

RECOMMENDATION: COMMENT

Address any WATCH concerns before treating the change as merge-ready.

Review Checklists

Code-reviewer lane:

• Security: no hardcoded secrets; inputs sanitized; SQL/NoSQL injection prevented; XSS escaped; CSRF on state-changing ops; authz enforced.
• Code Quality: functions < 50 lines (guideline); cyclomatic complexity < 10; no nesting > 4 levels; DRY; clear naming.
• Performance: no N+1; appropriate caching; efficient algorithms; no unnecessary re-renders.
• Best Practices: error handling; logging; public-API docs; tests for critical paths; no commented-out code.

Architect lane:

• Boundary/interface changes are explicit.
• New coupling/tradeoff risks are surfaced.
• Long-horizon maintainability concerns are evidence-backed.
• Architectural status is CLEAR / WATCH / BLOCK.
• Any BLOCK cites why merge-ready status should be withheld.

Approval Criteria

• APPROVE — code-reviewer returns APPROVE, architect status is CLEAR, and both independent lanes returned evidence.
• REQUEST CHANGES — code-reviewer returns REQUEST CHANGES, architect status is BLOCK, or required independent review delegation is unavailable/skipped/failed.
• COMMENT — code-reviewer returns COMMENT with architect status CLEAR, architect status is WATCH, or only LOW/MEDIUM improvements remain.

Best Practices

• Review early and often; small frequent reviews beat huge ones.
• Address CRITICAL/HIGH first.
• Consider context — some "issues" may be intentional trade-offs.
• Learn from reviews to improve coding practices.

Note: code-review itself is read-only and does not auto-fix. To fix findings, hand off to execution via the Agent tool or a team skill.