feat: Week 2 improvements - coverage CI + command registry
Week 2 items from ARCHITECTURE-IMPROVEMENTS.md:
Item 4: Single source of truth โ
- catalog.js already exists and works correctly
- All counts validated and passing
Item 5: Coverage metrics โ
- Add c8 coverage reporting to CI (reusable-test.yml)
- Non-blocking with continue-on-error
- Upload coverage artifacts for visibility
- Existing npm run coverage script with 80% baseline
Item 6: Command โ Agent/Skill map โ
- New script: scripts/ci/generate-command-registry.js
- Scans commands/ for agent/skill references
- Outputs docs/COMMAND-REGISTRY.json
- NPM scripts: command-registry:generate, command-registry:write
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Don Joh