Adds a new `useShellContext` hook with tests to the dashboard, integrated into `App.tsx` and `Header.tsx` to provide shell context plumbing throughout the UI.
Fusion-Task-Id: FN-3406
Merges five features: **Launch mode persistence** (FN-3405) — desktop now remembers and restores the user's preferred window mode across restarts via an IPC bridge; **Mailbox detail pane** (FN-3719/3720) — clicking messages in the Mail tab and Mailbox opens the detail pane and reply panel; **Remote
Fusion-Task-Id: FN-3405
Adds a local runtime manager to the desktop app (FN-3404) — an embedded engine process managed via IPC with packaging for bundled dependencies and lifecycle documentation. Also includes project mapping onboarding UI with persistence and rollback (FN-3505), plus related dashboard API and hook updates
Fusion-Task-Id: FN-3404
Removes the standalone `DesktopShellBootstrap` component from the desktop package, routing desktop remote mode into the shell onboarding flow instead. Updates the corresponding test file to reflect the component removal and adjusts the README.
Fusion-Task-Id: FN-3399
The merge lands Step 7 of FN-3398, adding documentation and delivery artifacts across the mobile and desktop packages with updated READMEs, mobile-specific docs, and architecture references.
Fusion-Task-Id: FN-3398
- Add Electron main-process IPC handlers and preload bridges for API proxying, window controls, update install, and platform lookup
- Introduce a desktop renderer entrypoint with DesktopWrapper and a custom frameless TitleBar component
- Add Electron-aware renderer utilities including API transport selection and hooks for runtime detection, auto-update events, and deep links
- Update dashboard header behavior for Electron mode and expand desktop tests across preload, transport, hooks, and title bar flows
- Document the desktop renderer architecture and update desktop package config/dependencies
- Reintroduce the @fusion/desktop workspace package with Electron main, preload, and renderer entrypoints
- Add desktop build/test tooling (TypeScript, Vitest, electron-builder) and update workspace build dependency settings for Electron
- Wire secure IPC bridge APIs for app version/quit flows with exported preload typings
- Add README usage docs and unit tests covering main-process window/tray behavior and preload API wiring
