Features
- Windows MSI installer: ships alongside the portable .exe, adds a Start Menu shortcut, .dwg / .dxf file association, and a finish screen with a launch-app checkbox.
- Right-edge side toolbar replaces the paper-space ribbon tab.
- Open CAD Studio registers as a .dwg / .dxf handler (installer and portable build) and prompts on first launch to become the default app, so it shows up in Windows "Open with".
Fixes
- The "Open with" / default-apps entry now shows the app icon on Windows and Linux instead of a blank generic document icon.
- RENAME focuses the inline rename field so you can type immediately.
- Object snap tracking resets its acquired points after each committed point.
- Box / lasso selection keeps the active selection when the region is empty.
Full Changelog: v0.5.3...v0.5.4