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>

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>

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>

Add file upload previews

Add terminal motion interactions

Polish cards lists and toasts

Modernize Sass build pipeline

Add card and table variants

Add navigation overlays components

Generalize UI kit branding

Scaffold GNexus UI kit