Migrated the Think portal (Organizr) login from Plex to native Authentik OIDC, and renamed ThinkHeaD.org to Think

Migrated the Think portal (Organizr) login from Plex to native Authentik OIDC — sign in with your Think Account; a Plex account is no longer required. The ThinkHeaD.org brand was renamed to Think at the same time (URL unchanged).

Imported from the 2026/07/01-2026/07/31 release.