0.32.0 — Image grow-vs-mask zoom; canonical easing/color/type primitives

Added

• Image overflowScaling prop. When hover zoom is active, overflowScaling
  decides what the scale grows. true (default) scales the content inside the fixed
  frame, masked by overflow (the existing behavior). false scales the whole framed
  image so it grows past its layout box. undefined inherits the editor's global
  default. Set on its own (without zoom) it forces zoom on in the chosen mode. Backed
  by a new --image-grow-hover token; at most one of --image-zoom-hover /
  --image-grow-hover is ever active. The Image editor gains an "Overflow scaling (mask
  zoom to frame)" checkbox alongside "Use zoom on hover".
• Canonical Layer-1 primitives now ship in tokens.css and are carried to vendored
  copies by a paired migration (2026-06-04-easing-color-and-typescale-additions): the
  full --ease-* easing scale (sine/quad/cubic/quart/quint/expo/circ/back plus
  linear() elastic and bounce curves), the --color-white / --color-black
  invariants, and --font-size-7xl. The migration is idempotent by presence (retuned
  steps are kept; only absent ones are inserted) — run npx live-tokens migrate to
  backfill a forked tokens.css. Fixes 0.31's Image zoom snapping with no ease when a
  vendored tokens.css lacked --ease-out-cubic.
• --scale-* tokens surfaced in the editor's Variables tab (new "Scale" group).