v0.1.0

Added

• Compact and Minimal built-in style variants: density-only theme presets that
  keep the Classic palette and shrink window typography, action buttons, and
  control chrome (Compact 13px type, 20px action buttons, 4px control radii;
  Minimal 12px type, 16px action buttons, square control corners).
• Theme hot reload: an open Data Visualizer window re-applies the selected
  theme immediately when its theme asset or referenced stylesheet is
  reimported, reference-swapped, renamed, moved, or deleted; deletions fall
  back to the package style with the existing saved-GUID semantics.
• A .unitypackage is now built and verified on each release and attached to
  the GitHub Release alongside the npm package.

Changed

• Control typography and radii in the base stylesheet now resolve from the
  --dataviz-font-size, --dataviz-circle-size, and --dataviz-control-radius
  tokens instead of hardcoded values. The Classic preset keeps its type and
  glyph sizes; the three large round action buttons are 1px smaller to match
  the action-button token, and themes that override --dataviz-font-size now
  also restyle the standard prose controls.