Reduce control and typography density across the kit

Expose design tokens as --gn-* CSS custom properties in kit.css

Split _forms.scss by component ...

- _forms.scss (254): form-group, inputs, selects, form-grid, fieldset
- _file-upload.scss (280): file upload panel + its responsive rules
- _range.scss (46): range slider
- _choice-controls.scss (220): radio, radio-group, switch, checkbox
kit.scss imports them in the original cascade order; screenshots and
demo-sync (27 sections, 0 diffs) confirm no visual change.

Fix v0.4.0 review findings and demo asset paths ...

- Restore visible hover feedback on radio/checkbox (background $color-grey)
- Drop dead checked/hover border-color rules; guard checked with :not(:disabled)
- Tokenize radio border as $border-width-choice and add $range-thumb-size
  so the choice-size bump no longer widens range slider thumbs
- Add cursor: pointer to switch wrapper
- Revert escaped doc snippets to absolute URLs (relative sweep was
  teaching fake ./routes in documentation samples)
- Add compare-heights.js demo sync check with CHROME_PATH fallback;
  ignore screenshots/

v0.4.0 — GnRepeater, redesigned checkbox/radio ...

- Add GnRepeater Vue component for dynamic field groups
- Redesign checkbox and radio styles to match kit aesthetic:
  hard-panel background, accent borders, checkmark/dot indicators,
  hover → primary border, checked → subtle tint + colored mark
- Bump version to 0.4.0

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Add GnRepeater component for dynamic field groups ...

- New Vue adapter: GnRepeater with v-model, scoped #item slot,
  minItems/maxItems guards, and built-in Add/Remove UI
- SCSS: .repeater, .repeater-header, .repeater-item,
  .repeater-item-body, .repeater-item-actions
- Demo: vanilla repeater with inline JS + GnRepeater in Vue forms
- Build verified: compare-heights reports 0 differences

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Add GnTagInput component for multi-value string input ...

Features:
- New GnTagInput Vue component with inline chip display
- Enter / paste (with separator split) to add tags
- Backspace in empty field removes last tag
- Unique check and maxItems limit
- Removable chips with x button

Style:
- Add _tag-input.scss with .tag-input, .tag-input-wrap, .tag-input-field
- Chips reuse existing .chip-secondary styling

Demo:
- Add interactive tag input example to Forms section (vanilla + Vue)
- Add code example blocks for HTML and Vue usage

Docs:
- Add GnTagInput to CLAUDE.md component catalog

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Redesign toast UX: compact layout, progress bar, title-only mode ...

- Replace heavy colored header strip with inline icon+title header
- Add thin bottom progress bar showing remaining lifetime
- Support title-only compact single-line toasts (no text = no body padding)
- Increase tinted background opacity from 0.06 to 0.18 for visibility
- Fix vanilla toast defaults: all variants now use lifetime=4000, alone=true
- Add demo buttons for title-only variants in both vanilla and Vue demos
- Remove hover effect from toast close button
- Adjust close button position (top: 5px) and progress bar margin (1px)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

v0.3.0 — GnUserCard, NavigationShell footer slot, Vue demo partials ...

Features:
- Add GnUserCard Vue component with compact and full variants
- Add GnNavigationShell #footer slot for custom footer content
- Add profile footer demo in navigation-shell section
- Split demo/vue.html into 27 partials under demo/partials/vue/
- Fix toast open animation (nextTick + requestAnimationFrame pattern)

Style:
- Add .user-card and .user-card-compact to _cards.scss
- Add .profile-identity to _navigation-shell.scss

Docs:
- Add demo synchronization rules to CLAUDE.md

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Fix Vue demo visual issues and expand component showcase ...

- _forms.scss: rename .checkbox to .switch, create proper .checkbox
  for checkbox (square) vs switch (slider) differentiation
- GnSwitch.js: create dedicated switch component using .switch class
- _forms.scss: add .radio-group with flex-wrap gap for radio layouts
- GnRadioGroup.js: add radio-group class to container
- _cards.scss: fix .card-horizontal .card-media sizing with
  max-height, aspect-ratio, and align-self: start
- demo/vue.html: fix steps data (label → title)
- demo/vue.html: fix definition list data (definition → description)
- demo/vue.html: add Accordion, InputGroup demos
- demo/vue.html: add NavigationShell import (component registered)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Fix Vue demo: dark theme, label color, expanded component showcase ...

- demo/vue.html: replace broken CSS custom properties with real kit colors
  (body background #16161E, text #C0CAF5)
- demo/vue.html: update Vue CDN to 3.5.13
- demo/vue.html: expand demo to show 30+ components including
  Drawer, ConfirmDialog, Navigation, Progress, Timeline, Data Display,
  Identity, Chips, Toolbar, Overlays, EmptyState, Skeleton, Toasts
- _forms.scss: add color: $color-text-light to .label so labels are
  readable on dark backgrounds
- Add toast interaction demo buttons

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Disable BrowserSync ghostMode and fix login-card sizing ...

- gulpfile.js: add ghostMode: false to stop scroll sync across tabs
- _cards.scss: .card.login-card max-width 460px → max-width: 100%; width: 460px

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Style login card: 460px max-width, max-content submit, centered form-group ...

- .card.login-card max-width 360px -> 460px
- .login-card-submit width 100% -> max-content
- Fix .form-group indentation inside .login-card
- Demo login button: btn-secondary with-icon ph-sign-in

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Add GnLoginCard component for standardized login forms ...

- Create GnLoginCard Vue adapter component with username/password
  fields, optional remember-me checkbox, submit button, and
  forgot-password / sign-up links.
- Add `.login-card` styles in _cards.scss with centered header,
  full-width submit button, and spaced link row.
- Register GnLoginCard in plugin and index exports.
- Add login-card demo block to demo/partials/cards.html.
- Update CLAUDE.md, README, and Vue docs with component entry.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Replace translucent $surface-panel-muted with solid $color-dark ...

$surface-panel-muted was `rgba($color-text-light, 0.045)` — an ugly,
almost-invisible blue tint. It is now `=#1F2335`, the proper dark panel
background for cards, groups, tables, tabs, drawers, etc.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Add disabled styles for .btn-icon ...

Disabled `.btn-icon` now matches `.btn[disabled]` appearance:
muted text color, transparent background/border, not-allowed cursor,
0.72 opacity, and suppressed hover state.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Add compact .btn-icon-sm and fix copy-button demo ...

- Introduce `.btn-icon-sm` (28×28, 18 px icon) in `_buttons.scss` for
  a miniature icon-button variant.
- Remove `.btn-secondary` from demo copy buttons so they render as
  transparent icon-only controls without background.
- Add `size` prop to `GnIconButton` and `GnCopyButton` Vue components.
- Update docs and demo to reflect the new size option.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Remove hover animations from all card variants ...

- Remove transform transitions and hover_touch blocks from:
  .card, .status-card, .metric-card, .card-horizontal, .action-card
- Keep structural hover styles (border-color, background, box-shadow)
  only on the base .card selector
- Clean up transition-property declarations containing transform

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Add GnHorizontalCard component ...

- New SCSS block .card-horizontal with 1:4 flex layout
  .card-media (20% width, min 80px, max 160px)
  .card-body with .card-title, .card-content, .card-footer
- Title supports optional link via titleHref prop
- Image is optional; card works without it
- Registered in plugin.js and index.js exports
- Updated docs: README, CLAUDE.md, component-api, component-map, ai-usage-guide

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Improve Vue adapter usability, add router support, and fix animations ...

- Remove hover rotation from .btn-icon (SCSS)
- Fix iconNode to auto-prefix missing "ph-" and warn in dev
- Add CLAUDE.md as AI agent quick-reference for component usage
- Include src/vue/ and CLAUDE.md in published package files
- Add exports field wildcard for src/vue/* subpaths
- Reposition Vue adapter docs as primary contract (not thin wrapper)
- Add JSDoc @typedef to key Vue components (GnButton, GnInput, etc.)
- Add Vue demo page (demo/vue.html) linked from main navigation

Router support (optional, no hard dependency):
- Create useVueRouter composable with safe getCurrentInstance access
- Create GnRouterTabs component for route-driven tabs
- Add item.to support to GnNavList with auto-active and router.push
- Forward activeMatch through GnNavigationShell to GnNavList
- Register GnRouterTabs in plugin and index exports
- Update docs (README, CLAUDE, component-api, ai-usage-guide, component-map)

Fix missing close animations in Vue components:
- GnModal: a-hide transition before unmount (300ms)
- GnDrawer: a-hide transition before unmount (300ms)
- GnToastProvider: dismiss with a-hide animation, close for instant clear

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Included dist to repo