Seed rms.auth.oauth plugin settings with a Google OIDC example while keeping the plugin disabled by default, add admin API/UI support to delete individual reservation entries, and extend auth flow handling for OAuth callback redirects and errors.
Show a persistent red hint in the reservations section that users must delete their reservation to free the station for others, with matching DE/EN i18n entries.
Add the reusable RMS core application (server, web UI, plugins, tests, tools) with generic defaults, GPL licensing, and maintainer context documentation so deployments can consume this repo as software source independent of station-specific overlays.
