feat: Foundation — auth system, 9 migrations, React frontend

Backend:
- Express server with JWT httpOnly cookie auth
- POST /api/auth/register, /api/auth/login, /api/auth/logout, GET /api/auth/me
- bcrypt 12 rounds, generic 401 errors (no email/password field disclosure)
- Auth middleware protects all /api/* routes except register/login
- pg Pool database connection

Frontend (React + Vite + TailwindCSS + shadcn/ui):
- AuthContext with session restore on page load via /api/auth/me
- ProtectedRoute redirects unauthenticated users to /login
- LoginPage, RegisterPage — Hebrew RTL layout (dir=rtl), inline validation
- DashboardPage placeholder
- shadcn/ui components: Button, Input, Label, Card

Database:
- 9 migrations (001-009): extensions, users, events, vendors, guests,
  bookings, invitations, vendor_ratings, organizer_preferences
- pg_trgm for fuzzy Hebrew search, GIN indexes on style_tags
- Phase 2+3 fields included: source, payment_status, contract_value,
  vendor ratings 6-dimension, organizer preferences
- Idempotent migration runner with schema_migrations tracking table

Infrastructure:
- Dockerfile (multi-stage: build React → production node:20-alpine)
- docker-compose.yml with PostgreSQL healthcheck, expose not ports
- Migrations run automatically on container start

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

docker-compose.yml

@@ -0,0 +1,36 @@
+version: '3.8'
+
+services:
+  app:
+    build: .
+    expose:
+      - "3000"
+    environment:
+      NODE_ENV: production
+      PORT: 3000
+      DATABASE_URL: postgresql://postgres:postgres@postgres:5432/airewit
+      JWT_SECRET: ${JWT_SECRET}
+    depends_on:
+      postgres:
+        condition: service_healthy
+    restart: unless-stopped
+
+  postgres:
+    image: postgres:16-alpine
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+      POSTGRES_DB: airewit
+    expose:
+      - "5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U postgres -d airewit"]
+      interval: 5s
+      timeout: 5s
+      retries: 10
+    restart: unless-stopped
+
+volumes:
+  postgres_data: