Work Plan - Fix Sidebar Resize Animation Lag

Request

The user reported that the left sidebar resize was laggy because of an animation.

DraftView.tsx:
- Identified that transition-all class was present on the sidebar container.
- Removed transition-all class. This class forces the browser to interpolate the width over 300ms every time javascript updates it (60 times a second), causing severe visual lag and "fighting" between the cursor and the element.
- Verified that resize logic uses the previously implemented requestAnimationFrame + ref approach, which is optimal.
DeckBuilderView.tsx:
- Verified that no transition class was present on the corresponding sidebar element.

Performance: Sidebar resizing should now be instant and track the mouse 1:1 without "slipping" or lag.