Dev 1.0.3 Release Notes

[BashfulWizard]

Private beta build focused on release blockers and client reliability.

- Added proxy-aware client connections for Passport, Notification Server, and Switchboard.
- Added Windows Program Events registration for Mocha Messenger sounds and wired alert playback to user-configured sounds.
- Added drag-and-drop contact group management in Groups view.
- Fixed group-conversation participant roster behavior after members leave and improved the participants header layout.
- Improved Options layout so Privacy and Preferences content fits more cleanly.
- Improved sign-in address persistence and removed the presence-toast suppression that caused missed online alerts during quick sign-ins.
- Cleaned up the repository root by moving deployment material, secrets, and legacy helper files into dedicated folders.