Previously, Cmd+W on the last surface kept the workspace alive with a
replacement shell, unless the user toggled a hidden setting. This was
confusing—users expect Cmd+W to close the window when there's nothing
left.
Now Cmd+W (and the tab-strip X button) always close the workspace when
they close its last surface, and close the window when that was the last
workspace. Internal/programmatic closes (e.g. process exit, panel moves)
still spawn a replacement shell so the workspace stays alive.
Key changes:
- Track explicit user close gestures via markExplicitClose / onTabCloseRequest
- Remove the LastSurfaceCloseShortcutSettings toggle (now always-on)
- Use window.performClose for last-workspace window close
- Update tests to match the new behavior
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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