Phase 1: Foundation — backend auth, frontend shell, Docker setup

Backend (FastAPI):
- App factory with async SQLAlchemy 2.0 + PostgreSQL
- Alembic migration for users and sessions tables
- JWT auth (access + refresh tokens, bcrypt passwords)
- Auth endpoints: register, login, refresh, logout, me
- Admin seed script, role-based access deps

Frontend (React + TypeScript):
- Vite + Tailwind CSS + shadcn/ui theme (health-oriented palette)
- i18n with English and Russian translations
- Zustand auth/UI stores with localStorage persistence
- Axios client with automatic token refresh on 401
- Login/register pages, protected routing
- App layout: collapsible sidebar, header with theme/language toggles
- Dashboard with placeholder stats

Infrastructure:
- Docker Compose (postgres, backend, frontend, nginx)
- Nginx reverse proxy with WebSocket support
- Dev override with hot reload

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docker-compose.yml

@@ -0,0 +1,47 @@
+services:
+  postgres:
+    image: postgres:16-alpine
+    environment:
+      POSTGRES_USER: ${POSTGRES_USER}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
+      POSTGRES_DB: ${POSTGRES_DB}
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER}"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+
+  backend:
+    build: ./backend
+    environment:
+      DATABASE_URL: ${DATABASE_URL}
+      SECRET_KEY: ${SECRET_KEY}
+      BACKEND_CORS_ORIGINS: ${BACKEND_CORS_ORIGINS}
+      ENVIRONMENT: ${ENVIRONMENT}
+      ACCESS_TOKEN_EXPIRE_MINUTES: ${ACCESS_TOKEN_EXPIRE_MINUTES}
+      REFRESH_TOKEN_EXPIRE_DAYS: ${REFRESH_TOKEN_EXPIRE_DAYS}
+      REFRESH_TOKEN_EXPIRE_HOURS: ${REFRESH_TOKEN_EXPIRE_HOURS}
+      FIRST_ADMIN_EMAIL: ${FIRST_ADMIN_EMAIL}
+      FIRST_ADMIN_USERNAME: ${FIRST_ADMIN_USERNAME}
+      FIRST_ADMIN_PASSWORD: ${FIRST_ADMIN_PASSWORD}
+    depends_on:
+      postgres:
+        condition: service_healthy
+
+  frontend:
+    build: ./frontend
+    depends_on:
+      - backend
+
+  nginx:
+    build: ./nginx
+    ports:
+      - "80:80"
+    depends_on:
+      - backend
+      - frontend
+
+volumes:
+  postgres_data: