Mail: Outlook.com inside the app through Microsoft Graph (folders, reader, compose, reply, unread badge); Cypht webmail removed

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

public/index.html

@@ -72,6 +72,7 @@
 <script src="/sheets.js"></script>
 <script src="/file-actions.js"></script>
 <script src="/signal-view.js"></script>
+<script src="/mail.js"></script>
 <script src="/boot.js"></script>
 <script src="/shell.js"></script>
 </body>