Merge branch 'main' into auth

Brought in latest changes from main including:
- RSS feed implementation
- First letter edge case fixes
- Updated ranking formula

Resolved conflicts by:
- Combining .env.example variables from both branches
- Keeping auth version (3.0.0alpha)
- Preserving extended user schema from auth
- Keeping onMount umami approach and adding RSS feed link

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

.env.example

@@ -1,5 +1,19 @@
 DATABASE_URL=example.db
 
+PUBLIC_SITE_URL=https://bibdle.com
+
+# nodemailer
+SMTP_USERNAME=email@example.com
+SMTP_TOKEN=TOKEN
+SMTP_SERVER=smtp.example.com
+SMTP_PORT=port
+# note from mail provider: Enable TLS or SSL on the external service if it is supported.
+
+# sign in with Discord
+
+# sign in with google
+
+# sign in with apple
 AUTH_SECRET=your-random-secret-here
 APPLE_ID=com.yourcompany.yourapp.client
 APPLE_TEAM_ID=your-team-id