Phase 1: Code Quality Guardrails
    ↓
Phase 2: Security Guardrails
    ↓
Phase 3: Testing Guardrails
    ↓
Phase 4: Git Hygiene
    ↓
Phase 5: Report Generation

Check: Count lines in each function/method
Pass: All functions ≤ 50 lines
Warn: Functions 40-50 lines (approaching limit)
Fail: Any function > 50 lines

Check: Count lines in each file
Pass: Files within limits
Warn: Files at 80%+ of limit
Fail: Files exceeding limits

Check: Analyze control flow (if, for, while, switch, &&, ||)
Pass: All functions ≤ 10
Warn: Functions 8-10
Fail: Any function > 10

Check: Verify exported functions have types
Pass: All exports typed
Warn: Internal functions missing types
Fail: Exported functions missing types

Check: Verify docstrings/JSDoc on exports
Pass: All exports documented
Warn: Documentation exists but incomplete
Fail: Exported functions undocumented

Check: Scan for violations
Pass: None found
Warn: Minor violations (1-2 magic numbers)
Fail: Multiple violations

Check: Identify input sources (API params, form data, URL params)
Pass: All inputs validated with schema or type checks
Warn: Validation exists but not comprehensive
Fail: Raw user input used directly

Check: Scan for SQL/query construction
Pass: All queries parameterized
Fail: String concatenation in queries

// FAIL: String concatenation
`SELECT * FROM users WHERE id = ${id}`

// PASS: Parameterized
db.query('SELECT * FROM users WHERE id = $1', [id])

Check: Scan for secret patterns
Pass: No secrets detected
Fail: Hardcoded secrets found

Check: Identify file operations
Pass: Path validation/sanitization present
Fail: Direct user input in file paths

// FAIL: Directory traversal possible
fs.readFile(userInput)

// PASS: Validated
const safePath = path.join(baseDir, path.basename(userInput))

Check: Identify async calls (fetch, DB queries, external APIs)
Pass: Timeouts configured
Warn: Some operations without timeout
Fail: No timeout handling

Check: Review coverage report
Pass: Meets thresholds
Warn: 70-80% business / 50-60% overall
Fail: Below thresholds

Check: Map public functions to test files
Pass: All public APIs tested
Warn: Most tested (>80%)
Fail: Significant gaps (<80%)

Check: If fix, verify test added
Pass: Regression test present
Fail: No regression test for bug fix

Check: Review test cases for boundaries
Pass: Null, empty, boundary values tested
Warn: Some edge cases missing
Fail: No edge case testing

Check: Tests can run in any order
Pass: Tests isolated
Fail: Tests depend on execution order

Check: Verify commit message format
Pass: Follows convention
Fail: Non-conventional format

Check: Review commit scope
Pass: Single logical change
Warn: Related changes (acceptable)
Fail: Unrelated changes bundled

Check: Scan staged files
Pass: No sensitive data
Fail: Secrets, credentials, or PII found

## Code Review Report

**Date**: 2025-01-15
**Files Reviewed**: 12
**Status**: ⚠️ WARNINGS (3 issues)

### Summary
| Category | Status | Issues |
|----------|--------|--------|
| Code Quality | ✅ Pass | 0 |
| Security | ⚠️ Warn | 2 |
| Testing | ✅ Pass | 0 |
| Git Hygiene | ⚠️ Warn | 1 |

### Issues Found

#### Security Warnings
1. **Missing timeout** in `src/api/fetch.ts:42`
   - External API call without timeout
   - Recommendation: Add 30s timeout

2. **Input validation** in `src/routes/users.ts:15`
   - Query parameter used without validation
   - Recommendation: Add Zod schema

#### Git Hygiene Warnings
1. **Large commit scope**
   - 8 files changed across 3 features
   - Recommendation: Split into separate commits

### Passed Checks
- ✅ All functions ≤ 50 lines
- ✅ All files within size limits
- ✅ No secrets detected
- ✅ Coverage at 82%
- ✅ Commit message format correct

## Interactive Review: src/api/users.ts

### Function: createUser (lines 15-45)

**Observations**:
- 30 lines (within limit)
- Complexity: 6 (acceptable)
- Missing error handling for database failure

**Questions**:
1. Should we add explicit error handling for DB failures?
2. Should the validation schema be extracted to a separate file?

**Your Response**: [awaiting input]

# .github/workflows/code-review.yml
name: Code Review Checks

on: [pull_request]

jobs:
  review:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Function Length Check
        run: |
          # Check no function > 50 lines
          # Implementation depends on language

      - name: Security Scan
        run: |
          # Run secret detection
          # Run input validation check

      - name: Coverage Check
        run: |
          npm test -- --coverage
          # Verify thresholds