- Launch now goes through a backend launch_file command (shell `start`), so
it works for any path — fixes "Not allowed to open path" from the opener
plugin's scoped open-path.
- Removed the toolbar Launch-Unreal button; it's now a right-click item on the
Working folder ("Launch Unreal Engine"), shown only when a .uproject exists.
- Reload History after a successful Submit so the new changelist shows without
a manual F5.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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