docs(spec): mark spec 001 as done (#3)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: hendrikebbers

docs/specs/INDEX.md

@@ -2,4 +2,4 @@
 
 | ID  | Spec-Folder | Name | Areas | Description | GitHub Issue | Status |
 |-----|-------------|------|-------|-------------|--------------|--------|
-| 001 | 001-canonical-role-constants | Canonical role constants | frontend, authentication, api | Fix `ROLE_ADMIN` value to `APP-ADMIN`, rename to `ROLE_APP_ADMIN`, add `ROLE_APP_USER`; align role constants to canonical OIDC names (breaking) | #3 | in progress |
+| 001 | 001-canonical-role-constants | Canonical role constants | frontend, authentication, api | Fix `ROLE_ADMIN` value to `APP-ADMIN`, rename to `ROLE_APP_ADMIN`, add `ROLE_APP_USER`; align role constants to canonical OIDC names (breaking) | #3 | done |