#44 Add recent-conversations Dock and tray menus

[Anonymous]

Originally created by: kristofferR

Implements the recent-conversations Dock/tray menu (Ref [#19]) — Caprine's "Quick access to conversations from Dock menu" feature.

What

• Dock menu (macOS): right-click the Dock icon to see the 9 most recent conversations; clicking one raises the window and opens that thread (SPA row click, falling back to a hard navigation when the row is scrolled out of the virtualized list).
• Tray menu: the same list sits above Quit Carrier in the tray context menu on all platforms (built fresh per right-click on macOS, pushed via set_menu on Windows/Linux).
• Privacy: while Hide Names & Avatars is on, the list is cleared immediately so contact names never surface in native menus. The list lives in memory only — nothing is persisted.

How

• inject/messenger.js scrapes the chat list (display name + /t/<id> link, reusing chatRows()) on a slow poll (10s visible / 60s hidden) and emits carrier:recent-threads only when the list actually changes.
• lib.rs validates the payload hard — bare /t/<digits>/ hrefs only (they're re-embedded into an eval'd navigation), names trimmed/truncated, duplicates dropped, list capped — and stores it in AppState.
• Tauri, tao, and muda all lack a Dock-menu API, so the NSMenu is built with muda directly (same crate Tauri's menus wrap, same version) and served through an applicationDockMenu: method added onto tao's NSApplication delegate at RunEvent::Ready. Menu clicks flow through Tauri's regular menu-event plumbing as recent:<index> ids.

Verified

On a live debug build: Dock menu lists the real chat list in order; clicking an entry switches the open conversation without a reload; toggling Hide Names & Avatars empties the Dock menu at once and restores it when toggled back; settings.json contains no thread data. cargo fmt / clippy -D warnings / cargo test --lib (3 new sanitizer tests) and node --check all pass.

https://claude.ai/code/session_01BuZke2qu27Gw363mGTm7gn

[Anonymous]

Ticket changed by: kristofferR

• status: open --> closed