v1.0.0-beta1

First public beta of the V1 surface. Ships the post editor, the site
editor, the block fork to the artisanpack/* namespace, and first-class
pairing with artisanpack-ui/cms-framework. See the README
and the docs/ directory for the full V1 surface.

Added

• Site editor (Phase H). Mounted at /visual-editor/site. Templates,
  template parts, theme.json-backed global styles, navigation menus, and
  patterns — all editable through a custom shell built on
  @wordpress/block-editor. Backed by cms-framework's
  Template/TemplatePart/GlobalStyles/Menu/Pattern models when
  cms-framework is installed; fail-closed SiteEditorAccessGate
  defaults to deny until the host binds a permissive gate (or installs
  cms-framework, which auto-binds CmsFrameworkInstallGate).
• Documentation set. Fifteen new / refreshed docs covering install,
  content model, Blade component reference, post-editor surface, custom
  blocks, renderers, site-editor surface, templates, global styles,
  navigation, patterns, Livewire and Inertia embedding recipes,
  theming, troubleshooting, and migration. Entry point:
  docs/getting-started.md.
• V1 expansion plan retained as historical record:
  docs/plans/11-v1-expansion.md.

Changed

• README rewritten to reflect final V1 scope: post editor + site editor
  • patterns + Livewire/Inertia embedding.