Add Nextcloud OAuth 2.0 login via laravel/socialite

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -34,6 +34,9 @@ jobs:
           QUEUE_CONNECTION=sync
           LOG_CHANNEL=stderr
           GIT_COMMIT=${{ github.sha }}
+          OAUTH_CLOUDSPICESBLUE_ID=${{ secrets.OAUTH_CLOUDSPICESBLUE_ID }}
+          OAUTH_CLOUDSPICESBLUE_SECRETKEY=${{ secrets.OAUTH_CLOUDSPICESBLUE_SECRETKEY }}
+          OAUTH_CLOUDSPICESBLUE_REDIRECTURI=${{ vars.OAUTH_CLOUDSPICESBLUE_REDIRECTURI }}
           EOF
 
       - name: PHP-Quellverzeichnisse leeren