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]>

deploy/env.traefik.example

@@ -16,9 +16,14 @@ JWT_SECRET=
 JWT_TTL_HOURS=1
 REFRESH_TTL_DAYS=14
 ISSUER=https://auth.shnt.top
+# OIDC IdP for Technitium DNS and other external RPs (defaults to ISSUER if empty)
+# OIDC_ISSUER=https://auth.shnt.top
+# Optional PKCS8 RSA PEM; otherwise key is auto-generated into SQLite (/data)
+# OIDC_RSA_PRIVATE_KEY=
 [email protected]
 ADMIN_PASSWORD=
 ADMIN_NAME=Admin
-RETURN_TO_ALLOWLIST=.shnt.top,https://vps.shnt.top,https://cfdm.shnt.top
+# Include Technitium origin if used (e.g. https://dns.shnt.top)
+RETURN_TO_ALLOWLIST=.shnt.top,https://vps.shnt.top,https://cfdm.shnt.top,https://bgp.shnt.top,https://fw.shnt.top,https://dns.shnt.top
 LOG_LEVEL=info
 NODE_ENV=production