Added a desktop-ready Tauri path that builds from a dedicated desktop client output and supports native integrations (notifications, file dialogs, filesystem access). Desktop app should be available in the next few days!

- E2EE pipeline: Device key encryption for contacts at rest, Signal session management, encrypted DM cache, sender key distribution for Spaces, safety numbers, key backup/restore. -- this should make the IM surface significantly more stable

- Signal Protocol hardening: Fixed prekey upload/fetch format alignment, signed prekey ID collisions, and error propagation during key init. Sessions are more reliable now.

- Community features: Feedback board, feature requests with voting

- Sidebar messaging: DMs now live in the sidebar instead of a separate page. Click a contact, start typing. No navigation, no context switch.

- Roster drawer: Your contact list is now a slide-out panel. Unified search across contacts, Roster directory, and Bluesky

oh also fix discord imports, yeah, that's a big one