✅ Add tests for final deletion warnings

Implement tests to ensure final deletion warnings are sent correctly
to eligible events, do not send duplicate warnings, and handle
unclaimed events appropriately.

🎨 Refactor avatar URL assignment in from_omniauth

Ensure consistent formatting of avatar URLs when creating or updating users.

✅ Add cascade deletion tests for events and users

Implement tests to ensure that deleting events and users correctly
triggers tracking for associated media and metrics.

💬 Update warning messages to reminders

Change "Final warning" to "Final reminder" in email and dashboard
to enhance clarity and consistency in user notifications.

⬆️ Upgrade libraries

⬆️ Upgrade Ruby version to 3.4.7

Update the Ruby version in the project to ensure compatibility with
latest features and improvements.

⬆️ Upgrade Ruby and Actions Checkout Versions

Update Ruby setup and actions checkout to the latest versions for improved
performance and security in CI workflows.

💄 Refine deletion warning logic to only target events with media and update mailer text to reflect this change.

🎨 Enhance user creation chart data by splitting users with and without events and enabling dynamic color assignment.

💄 remove unused HTML comment from deletion warning email template

💄 Add admin dashboard section for events approaching deletion and display lifetime member recognition in the UI.

💄 Adjust recent users and events display limits on the admin dashboard.

✨ improve admin media display with thumbnails and video play icons, filter events by user, and add event download/deletion warning timestamps.

💄 update deletion warning email content for improved clarity and call to action.

Merge branch 'master' into try-deletion-mails

⚡️ Remove `.processed.url` from Active Storage variant and preview return values.

✨ Add `--no-download` option to the database wipe script and use on-demand processing for media variants.

✨ Add deletion email notifications