feat(web): complete Phase 1 - foundation components, layouts, and hooks
Implemented complete design system and foundational infrastructure:
**Design System Components:**
- Button (all variants: primary, secondary, ghost, danger)
- Input & Textarea (with validation and error states)
- Card (elevated, outlined, flat variants)
- Modal/Dialog (with focus trap and accessibility)
- Avatar (with fallback initials)
- Badge (all color variants)
- Form helpers (FormField, Checkbox, Select)
- Link component with Next.js integration
- Navigation (Header, Footer with responsive design)
**Layouts:**
- MainLayout (with Header/Footer for public pages)
- AuthLayout (minimal layout for auth flows)
- DashboardLayout (with sidebar navigation)
**Hooks & Utilities:**
- useAuth() - authentication state management
- useApi() - API calls with loading/error states
- useLocalStorage() - persistent state management
- apiClient - Axios instance with token refresh
- authStore - Zustand store for auth state
**Configuration:**
- Tailwind config with design tokens
- Dark mode support via CSS variables
- Global styles with accessibility focus
- WCAG 2.2 AA+ compliant focus indicators
All components follow accessibility best practices with proper ARIA labels,
keyboard navigation, and screen reader support.
Job ID: MTAD-IMPL-2025-11-18-CL
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