- T22: docker-compose.dev.yml dev stack, Dockerfile, root Makefile
- T18: Profile test suite (Scenario A) — 8 integration tests with real handlers
- T23: Server binary wiring all components, config validation, /healthz
- Config: ValidateConfig with startup validation
14 test packages pass.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>