Add GnConfirmDialog and confirmPopup helper ...

- Create GnConfirmDialog Vue component wrapping GnModal
- Add browser Modals helper and confirmPopup for gnexus-ui-kit compatibility
- Wire exports in src/js/index.js, src/vue/index.js and plugin
- Add demo partial for confirm dialog
- Build and e2e tests pass (17/17)

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

Add Popover, Pagination, Timeline and Loader components ...

- Add Popover CSS/browser helper/Vue adapter with click-outside and Escape handling.
- Add Pagination CSS and GnPagination Vue adapter.
- Add Timeline CSS and GnTimeline Vue adapter.
- Add Loader/Spinner CSS/browser helper/Vue adapter with spin/dots/bar variants.
- Wire all four components into the SCSS entry, browser bundle, Vue plugin and exports.
- Add demo partials for popover, pagination, timeline and loader.

E2E and Vue adapter smoke builds pass.

Add Divider, Accordion, Stepper and FileAttachment components ...

- Implement CSS for divider, accordion, stepper and file-upload/attachment.
- Add browser Accordion helper and expose it on window.VMKUIKit.
- Add Vue adapters: GnAccordion, GnSteps, GnFileUpload, GnFileAttachment.
- Add demo partials and figma match pages for divider and attached-file.
- Fix Figma comparison flattening for transparent baselines (e.g. breadcrumbs, attached-file).
- Add vertical spacing to the demo index page to separate sections.

All Figma visual tests and the Vue adapter smoke build pass.

Add Table, List, Skeleton, Tooltip, Dropdown, NavigationShell ...

- Implement Table styles + browser helper + GnTable/GnTableRow/GnTableHeader
  with sortable/selectable variants.
- Implement List styles + browser helper + GnList/GnListItem.
- Implement Skeleton placeholders + browser helper + GnSkeleton.
- Implement Tooltip styles + browser helper + GnTooltip.
- Implement Dropdown menu styles + browser helper + GnDropdown/GnDropdownItem.
- Implement NavigationShell layout + browser helper + GnNavigationShell/GnNavigationItem.
- Wire all new components into kit.scss, Vue plugin, Vue entry, and browser bundle.
- Add demo partials for every new component.
- Update docs/component-coverage.md and PROJECT_NOTES.md.
- Builds and tests pass.

Add Tabs, Avatar, Chip, and Progress components ...

- Implement pill/compact/vertical tabs with browser helper and Vue adapters
  (GnTabs, GnTab, GnTabPanel) plus keyboard navigation.
- Add Avatar styles and GnAvatar with initials/image/icon and status dot.
- Add Chip styles and GnChip removable/selectable chip.
- Add Progress styles, browser helper, and GnProgress linear/step.
- Wire new components into kit.scss, Vue plugin, Vue entry, and browser bundle.
- Add demo partials and update docs/component-coverage.md + PROJECT_NOTES.md.
- All builds and smoke tests pass.

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.

Integrate user-provided SVG icon set ...

- Extract Icons_svg.zip into public/assets/icons/svg/ (967 icons).
- Replace stroke="black" and fill="black" with currentColor in all SVGs
  so icons inherit text color.
- Build public/assets/icons/index.json mapping clean names to SVG paths.
- Add src/js/components/icon-helper.js for async inline SVG loading.
- Add src/scss/components/_icons.scss with base icon styles.
- Import icons component styles into kit.scss.

Build, Vue example build, and Playwright smoke test still pass.