- Three vertical sliders (Brightness, Contrast, Gamma) to the left of the
canvas for display-only image adjustment; all use power/linear formulae
applied on-the-fly without touching saved data
- Alpha slider controls mask overlay transparency
- Brush size slider moved to its own row
- Each slider has a reset (↺) button restoring its default value
- Hide Mask button turns red when active; Eraser button turns orange
- Load Prev Mask button copies the saved mask from the previous clip in
the list onto the current clip; the action is pushed onto the undo stack
so it can be reverted with Undo
- Right survey panel narrowed (stretch factor 2 → 1)
- README Controls section updated to document all new features
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>