Fix Vue toast demo provider usage ...

useToast() is called in setup before the template renders, so it ran
outside the provider's provide scope. Switch the demo to call toast
methods directly through the provider's exposed API via template refs.

Co-Authored-By: Claude <noreply@anthropic.com>

feat: add remaining reference Vue components, card variants, toolbar/repeater/activity-log/usage-meter styles and demo mounts ...

- Add GnHorizontalCard, GnUserCard, GnMetricCard, GnStatusCard, GnLoginCard,
  GnIdentity, GnActivityLog, GnToolbar, GnRouterTabs, GnRepeater, GnUsageMeter
- Extend GnTabs to support reference items API while keeping child mode
- Add card subcomponent styles: status, metric, horizontal, login, user
- Add toolbar, repeater, identity, activity-log, usage-meter styles
- Add typography token variables used by reference-compatible components
- Add Vue demo mounts for cards, data-patterns, progress, tabs, navigation-shell
- Fix GnAvatar online status class and navigation-shell footer slot
- Update screenshot config to cover skeleton and navigation-shell

Verified: npm run build, npm run test:e2e (19 passed), npm run screenshots,
npm run test:vue-adapter, figma-match (7 passed)

Polish triggers, breadcrumbs, drawer, file preview, editable icons, logos ...

- Use btn-sm for popover, tooltip, dropdown, modal-open, confirm, toast, drawer triggers.
- Use btn-md with gap for modal and confirm-popup action buttons.
- Fix left drawer: correct SCSS nesting so .drawer-left panel slides from left.
- Align breadcrumbs demo with Figma: dark surface, active pill, collapsed rows.
- Unify File Upload preview cards with static File attachment cards markup.
- Style Editable String buttons as btn-icon-only btn-sm.
- Fix 'essentials/search' icon mapping to 'essentials/zoom/search'.
- Add Logos component block from Figma frames.
- Expand screenshot section list to cover more component demos.
- All 19 e2e tests green.

Co-Authored-By: Claude <noreply@anthropic.com>

fix: close high-severity compatibility gaps from functional audit ...

- Add missing Drawer browser helper (src/js/components/drawer.js) and export it.
- Replace icon-only Helper with full gnexus-ui-kit-compatible Helper object
  (template, unification, states).
- Make Toasts create* methods synchronous to match the reference contract.
- Rename Vue plugin export to GnexusUiVue while keeping VMKUiVue alias;
  add tryUseRouter, tryUseRoute, isRouteActive composables.
- Emit both vmk-ui-kit.* and gnexus-ui-kit.* browser bundles; point package.json
  main/module/exports to gnexus-ui-kit aliases.
- Add demo partials for GnInputGroup, GnDescriptionList, GnEmptyState, GnPageHeader.
- Update modal/drawer/toast demos to exercise the browser JS API.
- Update functional tests for dynamic modal/drawer creation.

All e2e tests pass; demo page has no console errors with the new background wrapper.

Co-Authored-By: Claude <noreply@anthropic.com>

Final polish, functional audit, and new Vue components ...

- Fix interactive overlay pointer-events for modal/drawer
- Add accordion panel transition so animation completes
- Fix toast inline handler syntax escaping
- Install real Phosphor Icons fonts and CSS
- Add auto-init for browser helpers and GNexusUIKit alias
- Add functional Playwright tests for all interactive components
- Add new Vue components: GnIconButton, GnInputGroup, GnDescriptionList, GnEmptyState, GnPageHeader
- Update kit.scss with new component styles
- All 17 e2e tests, Vue adapter smoke, and production build passing

Co-Authored-By: Claude <noreply@anthropic.com>

Add overlay components: Modal, Drawer, Toast system ...

- Add SCSS for modals, drawers and toasts with VMK design tokens.
- Add GnModal and GnDrawer Vue adapters with focus trap, Escape close and teleport.
- Add browser Toasts helper and GnToastProvider + useToast composable.
- Wire overlays into plugin, Vue entry and browser bundle.
- Add demo partials for Modal, Drawer and Toast.
- Update component coverage and project notes.