- Added 05_set_authservice.yml to set XWikiPreferences.authenticationService
to modern component hints (standard, oidc, ldap).
- Added _auth_diag.yml to introspect registered AuthService components and
verify the active preference.
- Updated docker-compose.yml.j2 to use -Dxwiki.authentication.authservice
instead of deprecated authclass syntax.
- Temporarily included AuthDiag task in 01_core.yml for runtime verification.
Context: https://chatgpt.com/share/69005d88-6bf8-800f-af41-73b0e5dc9c13
