Prerelease Alpha 30 — Tray sessions & location-aware agents

The tray became useful. Clicking the Rush menu bar icon now opens a real dropdown: recent sessions, grouped channel connections, quick jumps back into the app, and a menu that refreshes as sessions and integrations change.

That matters more than it sounds. A good tray menu turns Rush into something you can glance at and re-enter quickly, instead of a window you have to relaunch mentally every time.

Location finally works end-to-end. Alpha 30 also fixes the "I don't have your location" dead end in Slack DMs by wiring macOS location capability through hardened builds and letting rush-assistant call the location tools directly.