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/pages/SettingsPage.tsx

@@ -1,26 +0,0 @@
-import { useAuthStore } from '../stores/auth'
-
-export default function SettingsPage() {
-  const { user } = useAuthStore()
-
-  return (
-    <div className="p-6">
-      <h1 className="text-3xl font-bold mb-4">Settings</h1>
-      <div className="max-w-2xl">
-        <div className="p-4 rounded-lg border border-border bg-surface mb-4">
-          <h2 className="text-xl font-semibold mb-2">Profile</h2>
-          <dl className="space-y-2">
-            <div>
-              <dt className="text-sm text-gray-400">Email</dt>
-              <dd>{user?.email}</dd>
-            </div>
-            <div>
-              <dt className="text-sm text-gray-400">Display Name</dt>
-              <dd>{user?.display_name || 'Not set'}</dd>
-            </div>
-          </dl>
-        </div>
-      </div>
-    </div>
-  )
-}