v2.0.0

Added

• Paint editor — a new editor for a cursor's artwork, opened from a
  slot in the preset editor:
  • Move tool — drag the sprite directly, or nudge it with an
    arrow/snap-to-edge pad.
  • Hand tool — pan the canvas by holding the left mouse button.
    The middle mouse button pans from any tool, at any time.
  • Canvas tool — resize the canvas by dragging handles on its
    edges/corners, with a live preview; an Apply button confirms the new
    size, and switching to another tool without clicking Apply reverts
    it.
  • A "Canvas size" dialog for numeric width/height entry, size presets,
    and a 3×3 anchor grid.
  • Zooming (mouse wheel + Ctrl, or +/- buttons) anchored to the
    cursor/viewport center, a sprite-bounds toggle, independent editor UI
    zoom, and a resizable editor window.
  • Export to PNG, named <preset name> <cursor role> <width>x<height>.png
    (e.g. My preset Arrow 32x32.png).
  • Brush and Eraser tools are present in the toolbar as placeholders for
    upcoming pixel-editing features; they aren't functional yet.
• Drag-and-drop preset reordering on the main gallery — drag a tile to
  reorder presets, with a translucent ghost tile following the cursor and
  a blue insertion indicator showing where it'll land. Order is saved and
  persists across restarts.
• The preset context menu gained inline rename, move left/right,
  and download to the Downloads folder (previously it only offered
  Edit and Delete).
• Export presets as a full-fidelity .cursorpalette bundle (roles,
  locks, and cursor size preserved; roles borrowed from other presets are
  copied in so the bundle is self-contained) or as a plain ZIP of the raw
  cursor files, picked from a tile-grid selector. Both save to Downloads
  and reveal themselves in Explorer. The export dialog also has an
  optional custom file name field.
• Import presets from a .cursorpalette bundle or a .zip/.rar/
  .7z archive, via a file dialog or by dropping onto the main window,
  with an optional "override size" toggle to apply one uniform cursor size
  to everything being imported. Packages created by a newer, incompatible
  app version are detected and rejected with a clear message.

Changed

• The update-check footer now shows a "checking version" state while it
  runs, a checkmark on the up-to-date label, and lets you click that label
  to re-check manually.

Fixed

• The toast notification's slide-in animation never played, because its
  Storyboard targeted a TranslateTransform that was never attached to
  the toast's RenderTransform.
• Long bullet lines in the in-app help (ⓘ) windows were clipped instead of
  wrapping to a new line.