OpenNook v0.4.0

Added

• NookChromeTypography - a host-tunable token type for the framework's own
  fonts. Set via NookConfiguration.typography; defaults reproduce the framework
  exactly, and the resolved fontDesign still cascades over the roles. Restyles
  framework text without forking, the typography counterpart to the existing color
  (NookResolvedTheme) and layout (NookChromeMetrics) seams. Roles cover the
  top bar, compact pill, and status banner, plus the placeholder home, the
  built-in Settings panel, and the optional NookComponents add-ons.
• NookChromeMetrics gained the element-level dimensions, corner radii, spacing,
  and emphasis-opacity values that were previously baked into the framework views -
  the chrome (header icons, leading brand mark, compact pill, status banner), the
  placeholder home, the Settings panel (rows, pickers, the shortcut key cap, the
  accent swatches, the disclosure section), and the NookComponents shelf,
  activity card, and volume glyph. All new fields default to today's values, so
  the change is additive and non-breaking.

Changed

• The framework views now read every font, size, radius, spacing, and opacity from
  NookChromeTypography / NookChromeMetrics instead of inline literals - the
  chrome (top bar, header icons, compact pill, status banner), the placeholder
  home, the built-in Settings panel, and the NookComponents add-ons. No visual
  change at the defaults; a host can now restyle any of these surfaces through
  public API only. (A few intentionally-structural literals stay inline: motion
  spring/offset magnitudes, the breadcrumb gradient mask, the fixed severity and
  destructive-action colors, and zero-floor spacers.)
• The GitHub repository moved to athledev-labs/opennook.
  Update your Swift package URL; GitHub redirects the old glendonC/opennook path
  for a transition period.