feat(reui): update ReUI components and documentation

- Added new OIDC configuration options in `.env.example`.
- Expanded documentation in `AGENTS.md` to include OIDC endpoints and admin UI.
- Updated ReUI skill version and component count from 17 to 20 across various documentation files.
- Enhanced `README.md` and other related files to reflect the new component structure and usage guidelines.

Co-authored-by: Cursor <[email protected]>

apps/api/package.json

@@ -13,6 +13,7 @@
     "@authportal/db": "workspace:*",
     "@authportal/shared": "workspace:*",
     "@fastify/cors": "^11.0.1",
+    "@fastify/formbody": "^9.0.0",
     "@fastify/helmet": "^13.0.1",
     "@fastify/jwt": "^9.1.0",
     "@fastify/rate-limit": "^10.3.0",
@@ -21,6 +22,7 @@
     "@node-rs/argon2": "^2.0.2",
     "fastify": "^5.4.0",
     "fastify-plugin": "^5.0.1",
+    "jose": "^6.2.8",
     "zod": "^4.4.3"
   },
   "devDependencies": {