feat: add React frontend - homepage, auth, products, craftsmen pages

- React 18 + Vite + TypeScript + TailwindCSS + shadcn/ui components
- Auth pages (login/register) with JWT token management via Zustand store
- Homepage with 9 craft category tiles (ceramics first, lacquerware second)
- METI 伝統的工芸品 badge and featured section on homepage
- Products page with category filters + METI認定 filter
- Craftsmen list page with METI badge display
- Navbar with auth-aware navigation
- Japanese warm color theme (amber/terracotta)
- API proxy config pointing to Express backend

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -0,0 +1,54 @@
+version: '3.8'
+
+services:
+  web:
+    build: .
+    expose:
+      - "3000"
+    environment:
+      - NODE_ENV=production
+      - PORT=3000
+      - DATABASE_URL=postgresql://postgres:postgres@postgres:5432/shokuninmarche
+      - REDIS_URL=redis://redis:6379
+      - JWT_SECRET=${JWT_SECRET:-changeme_in_production}
+      - JWT_REFRESH_SECRET=${JWT_REFRESH_SECRET:-changeme_refresh_in_production}
+    depends_on:
+      postgres:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+    restart: unless-stopped
+
+  postgres:
+    image: postgres:15-alpine
+    expose:
+      - "5432"
+    environment:
+      - POSTGRES_DB=shokuninmarche
+      - POSTGRES_USER=postgres
+      - POSTGRES_PASSWORD=postgres
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U postgres"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+    restart: unless-stopped
+
+  redis:
+    image: redis:7-alpine
+    expose:
+      - "6379"
+    volumes:
+      - redis_data:/data
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+    restart: unless-stopped
+
+volumes:
+  postgres_data:
+  redis_data: