feat(keybindings): open Settings with Cmd/Ctrl+,

[wende]

Summary

• Add a rebindable settings.open hotkey defaulting to ⌘, / Ctrl+, (standard desktop Preferences shortcut)
• Wire it in the shell to toggle the settings overlay (same as the gear button), including when a terminal is focused
• Surface the shortcut on the settings gear tooltip and under Settings → Keybindings → General

Test plan

• Press ⌘, (macOS) or Ctrl+, (Windows/Linux) from the home screen → Settings opens
• Press the same chord again → Settings closes
• Focus a session terminal, press ⌘,/Ctrl+, → Settings still opens
• Hover the gear button → tooltip shows the shortcut
• Settings → Keybindings → General shows Open settings and can rebind it
• Existing keybindings still work (e.g. ⌘N, Esc closes Settings)

Made with Cursor