- Add `.junie/guidelines.md` with comprehensive development instructions.
- Include `.aiassistant/rules/Creating and maintaining tests.md` and `.aiassistant/rules/Creating and securing routes.md`.
- Introduce `CACHE_SELFSERVE_LANE_KEY_ALLOWED_SERVICES` for lane service validation.
- Update `selfserve_lane_relay_controller_t` to enforce service-specific permissions for machine relay.