GREEN phase of TDD task 02-01-01. Adds the load-bearing Phase 2
contract that downstream plans compile against:
- Constants.kt: OIDC_ISSUER (trailing slash, placeholder homelab host),
OIDC_CLIENT_ID = recipe-app, OIDC_REDIRECT_URI = recipe://callback,
API_BASE_URL, plus moved SERVER_PORT for one shared config object.
- dto/User.kt: domain identity (id/sub/email/displayName), id is String
to keep shared free of UUID library deps (D-19 / INFRA-06).
- dto/MeResponse.kt: @Serializable wire DTO for GET /api/v1/me with a
one-to-one toUser() mapper. Stable for Phase 3 to add householdId
via ignoreUnknownKeys.
- Removes the now-redundant shared/.gitkeep placeholder.
Verification:
- ./gradlew :shared:jvmTest :shared:compileCommonMainKotlinMetadata: PASS
- ./tools/verify-shared-pure.sh: PASS
- All grep acceptance criteria for Task 1 satisfied
