- Add @bytelyst/backend-flags and @bytelyst/backend-telemetry packages
- Create feature-flags.ts and telemetry.ts wrappers using shared packages
- Add TELEMETRY_ENABLED and FEATURE_FLAGS_ENABLED config fields
- Default DB_PROVIDER to memory (fixes test failures without env vars)
- Add JWT_SECRET dev default and PLATFORM_SERVICE_URL
- 176/176 tests pass