Previously the cursor stayed the default arrow over every clickable
UI element (modal buttons, HUD action bar, mode-launcher cards,
settings toggles). Adds the standard "this is clickable" hand
affordance: while not dragging a card, hovering any entity with
Interaction::Hovered (or Pressed — keeps the pointer through a
click-and-hold) sets the window cursor to SystemCursorIcon::Pointer.
The new branch sits between the existing drag handlers in
update_cursor_icon: Grabbing wins when actively dragging, then
Pointer when a button is hovered, then Grab when a draggable card
is hovered, then Default. Card-drag affordance unchanged.
A pure pick_cursor_icon(is_dragging, any_button_hovered,
any_card_hovered) helper makes the priority logic unit-testable
without standing up a full Window + Camera fixture; four new tests
pin every branch.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
funman300
cd54ce1bb0