Update downloads never used the configured proxy because electron-updater
runs all traffic on its own session partition, while the proxy was applied
to app/defaultSession only. Point proxy config at autoUpdater.netSession,
and make the system fallback an explicit `mode: 'system'` since an empty
setProxy config means fixed_servers with no rules (= direct), which also
silently downgraded the default session away from the OS proxy.
Disable differential download: blockmap-driven ranged requests against the
GitHub CDN are RTT-bound and run far below line speed on both macOS and
Windows; full downloads restore expected bandwidth.
Guard captureWindowState and the resize forwarder against destroyed
windows: quitAndInstall tears the window down while late move/resize/close
events still fire, crashing the main process with "Object has been
destroyed".
Widen the About page container from max-w-lg to max-w-2xl so release notes
markdown is no longer cramped.
Introduce the Electron desktop shell alongside the existing React renderer and local Bun server boundary. The migration keeps the DesktopHost contract explicit across Tauri, Electron, and browser runtimes while adding Electron main/preload services for dialogs, shell, notifications, updates, tray/window lifecycle, terminal, preview WebContentsView, app mode, and release/package validation.
The commit also carries the latest local main desktop command updates, including agent slash entries and hidden-by-default markdown thinking details, so the packaged Electron build matches the current main UX surface.
Constraint: React renderer, local Bun server, REST/WebSocket, and sidecar boundaries must remain reusable during the migration
Constraint: macOS dev packages are ad-hoc signed and cannot prove Developer ID notarization or Gatekeeper release launch
Rejected: Browser-only smoke validation | it cannot exercise native dialogs, keychain prompts, notification behavior, or packaged app startup
Confidence: medium
Scope-risk: broad
Directive: Do not remove Tauri host support until signed Electron release artifacts pass native OS smoke on macOS, Windows, and Linux
Tested: bun run check:desktop
Tested: cd desktop && bun run check:electron
Tested: CSC_IDENTITY_AUTO_DISCOVERY=false bun run electron📦dir
Tested: bun run test:package-smoke --platform macos --package-kind dir --artifacts-dir desktop/build-artifacts/electron
Tested: Computer Use read packaged Electron app window at desktop/build-artifacts/electron/mac-arm64/Claude Code Haha.app
Not-tested: Developer ID signed/notarized Gatekeeper launch
Not-tested: Real OS notification click-to-session action
Not-tested: Windows and Linux packaged app smoke on real hosts
