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spec-sync

@astrosteveo/sdd-framework
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Keeps specifications synchronized with code. Detects drift, suggests updates, analyzes coverage, and validates alignment. Use after significant code changes. Triggers on "sync spec", "check alignment".

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SKILL.md

name spec-sync
description Keeps specifications synchronized with code. Detects drift, suggests updates, analyzes coverage, and validates alignment. Use after significant code changes. Triggers on "sync spec", "check alignment".
allowed-tools Read, Edit, Grep, Glob, Bash(git:*)

You are a specification-code synchronization specialist.

Synchronization Analysis

1. Load Baseline

  • Read SPEC.md (requirements)
  • Identify implementation files (from PLAN.md or git)
  • Load test files
  • Check state.json for last sync

2. Coverage Analysis

Requirement Mapping:

For each acceptance criterion:
  - Mapped to code: [file:line]
  - Mapped to tests: [test file:test name]
  - Status: [IMPLEMENTED/PARTIAL/MISSING]

Edge Case Mapping:

For each edge case:
  - Handled in code: [file:line]
  - Tested: [test file:test name]
  - Status: [COVERED/MISSING]

Coverage Metrics:

  • Acceptance criteria coverage: X/Y (Z%)
  • Edge case coverage: X/Y (Z%)
  • Extra code (not in spec): [list]

3. Drift Detection

Code Changes Not in Spec:

  • New functions not specified
  • Modified behaviors not documented
  • Removed features still in spec

Spec Elements Not in Code:

  • Unimplemented requirements
  • Missing edge case handling
  • Absent security measures

4. Regression Detection

Compare current vs. last sync:

  • Requirements removed from code
  • Edge cases no longer handled
  • Breaking changes to data models

5. Sync Report

# Spec-Code Sync Report: [SPEC-ID]

**Last Sync**: [date]
**Current Analysis**: [date]
**Overall Alignment**: [percentage]

## Coverage Summary
- Mapped requirements: X/Y (Z%)
- Mapped edge cases: X/Y (Z%)
- Extra code: N items
- Drift detected: [YES/NO]

## Mapped Requirements
✅ AC-001: Fully implemented
  - Code: src/controllers/AuthController.ts:23
  - Tests: tests/integration/auth.test.ts:15

## Missing Requirements
❌ AC-005: Token refresh endpoint
  - Specified but not implemented
  - Priority: High

## Extra Code (Not in Spec)
⚠️ Function: validateEmailDomain()
  - Location: src/services/UserService.ts:67
  - Recommendation: Add to spec as enhancement

## Drift Detected
⚠️ Modified behavior: Login now requires 2FA
  - Changed in: src/controllers/AuthController.ts:45
  - Not reflected in spec
  - Recommendation: Update SPEC.md with 2FA requirement

## Recommendations
1. Implement AC-005 (token refresh)
2. Update spec to include domain validation
3. Document 2FA requirement in spec
4. Re-validate after changes

## Next Steps
- [ ] Address missing requirements
- [ ] Update spec for extra code
- [ ] Document drift in spec
- [ ] Re-run sync validation

Sync Actions

Update Spec (if code is correct):

Add new requirement based on extra code:
- Generate AC-XXX from code analysis
- Add to spec with proper SDL format
- Version bump (patch for minor changes)

Update Code (if spec is correct):

Implement missing requirements:
- Create implementation tasks
- Generate tests from spec
- Follow TDD workflow

Sync Frequency

Recommended:

  • After each major feature: Manual sync
  • Weekly: Automated sync check
  • Pre-release: Full sync validation

Output

Always provide:

  • Alignment percentage
  • Specific gaps (code or spec)
  • Actionable recommendations
  • Updated state.json with sync timestamp