feat(design-system): add data components, form/page-state patterns, and frontend integration
- Inputs: TextField, Select, Checkbox
- Surfaces: Surface, Card, Chip, Badge
- Feedback: Alert, Dialog, Skeleton, Progress
- Financial data: DataTable, Metric, Money, PriceChange
- Form & page-state: FormField, FilterBar, EmptyState, ErrorState, LoadingState
- MUI CssVarsProvider -> ThemeProvider deprecation fix
- Inter font bundled via @fontsource/inter
- ESLint no-restricted-imports (warn) for gradual migration
- storybook-static gitignored
All 268 tests pass (157 design-system + 111 frontend)
Sergey Krylov
53659a36b1