# UnifiedSpread Visual Regression Checklist

Run these checks after CSS or Host integration changes.

1. `demo/basic.html` mounts after manifest CSS loading.
2. Grid is visible and has non-zero height in normal and maximized demo modes.
3. Name box and formula bar render above the grid.
4. Row headers, column headers, selected cell border and range overlay are visible.
5. Sheet tabs render at the bottom and remain scrollable.
6. Filter popup, context menu, sheet menu and object menu appear above the grid.
7. OneEditor integration demo hides package File UI when requested but the grid still renders correctly.
8. Theme switch between light/flat and dark does not break layout.
9. Host CSS for `.toolbar`, `.tab`, `.grid`, `body`, or `html` does not alter UnifiedSpread runtime layout.
10. `PACKAGE_MANIFEST.json` contains only package-relative CSS paths.