frontend-react-stack

Frontend React Stack Skill

Scope

Apply this skill for all frontend changes under frontend/.

Technology Stack

Concern	Technology	Version
Build	Vite	6+
Language	TypeScript	strict mode
UI Framework	React	19
UI Components	shadcn/ui	Radix primitives + Tailwind CSS v4
Routing	React Router	v7 (react-router)
Forms	React Hook Form + Zod	v7 + @hookform/resolvers
Server State	TanStack Query	v5
Client State	Zustand	v5
Data Tables	TanStack Table	v8
Styling	Tailwind CSS	v4 (oklch tokens + @theme inline)
Icons	Lucide React	latest
Toast	Sonner	via shadcn sonner component
Linting	Biome	latest
Testing	Vitest + RTL + Playwright	latest
Package Manager	bun	latest

Non-goals

• Do NOT introduce Lit web components, Vue, Angular, or other front frameworks
• Do NOT introduce alternative routing systems unless explicitly requested
• Do NOT introduce TanStack Form (@tanstack/react-form) — use React Hook Form as the only form library
• Do NOT bypass shadcn primitives for shared controls without documented reason
• Do NOT use Jinja2 templates for frontend views

Project Architecture

frontend/src/
├── application/         # TanStack Query hooks + Zustand stores
├── domain/              # Models, Zod schemas, utility types
├── infrastructure/      # API client, config (runtime, env, registry)
├── lib/                 # Shared utilities (cn(), form helpers)
├── presentation/        # UI layer
│   ├── components/ui/   # shadcn/ui primitives (button, card, dialog, ...)
│   ├── components/      # Domain components (citation, layout)
│   ├── features/        # Feature modules (case-detail, cases, modals)
│   ├── pages/           # Route page components
│   └── providers/       # React context providers (theme)
├── router/              # React Router route definitions
└── styles/              # Tailwind CSS + shadcn theme tokens

Quality Gates

• TypeScript strict mode must remain clean
• All existing tests must remain green
• Add targeted tests for new behaviors
• Use stable selectors and deterministic mocks for e2e tests
• Keep component composition consistent with shadcn patterns