feat: implement docker infrastructure (US-001)

- Add docker-compose.yml with postgres, redis, api, and web services
- Add multi-stage Dockerfile for API (Python 3.11)
- Add multi-stage Dockerfile for web (Node.js 20 + nginx)
- Add Makefile with common development commands
- Add .env.example with all required environment variables
- Add placeholder pyproject.toml and package.json for builds
- Configure health checks for all services
- Setup persistent volumes for postgres, redis, and repos
- Run services as non-root users

apps/web/src/main.tsx

@@ -1,23 +0,0 @@
-import { StrictMode } from 'react'
-import { createRoot } from 'react-dom/client'
-import { RouterProvider } from 'react-router-dom'
-import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
-import './index.css'
-import { router } from './router'
-
-const queryClient = new QueryClient({
-  defaultOptions: {
-    queries: {
-      staleTime: 5 * 60 * 1000, // 5 minutes
-      retry: 1,
-    },
-  },
-})
-
-createRoot(document.getElementById('root')!).render(
-  <StrictMode>
-    <QueryClientProvider client={queryClient}>
-      <RouterProvider router={router} />
-    </QueryClientProvider>
-  </StrictMode>,
-)