New Window shortcut (Ctrl+Shift+N) does nothing on Windows desktop

[JasenHTGI]

Description

The desktop menu shows File → New Window with a Ctrl+Shift+N keybind hint,
but pressing the shortcut does nothing. Clicking the menu item opens a new window
fine, so only the keyboard accelerator is dead.

Other shortcuts (settings Ctrl+,, zoom Ctrl+0/Ctrl++/Ctrl+-, and the edit
shortcuts) work correctly. Ctrl+Shift+N is the only broken one.

Root cause (from source)

The menu accelerators are defined in packages/app/src/desktop-menu.ts per
platform (macos: "Cmd+Shift+N", windows: "Ctrl+Shift+N"). macOS registers them
via a native Electron menu (packages/desktop/src/main/menu.ts), but that function
returns early on Windows (if (process.platform !== "darwin") return). Windows uses
an in-app dropdown (packages/app/src/components/windows-app-menu.tsx) where the
accelerator is only rendered as a label — nothing ever listens for the keystroke.
window.new is an action (not a command), so the renderer command keybind system
doesn't cover it either, and Electron's default menu (active on Windows) has no
"New Window" item. So Ctrl+Shift+N is never wired to createMainWindow().

Plugins

None

OpenCode version

1.18.16

Steps to reproduce

1. Open the OpenCode desktop app on Windows.
2. Press Ctrl+Shift+N.
3. Nothing happens. (File → New Window via the menu works.)

Screenshot and/or share link

No response

Operating System

Windows 11

Terminal

Windows Terminal

[github-actions]

For keybind-related issues, please also check our pinned keybinds documentation: #4997