Initial commit: backend scaffold, auth, frontend login

- FastAPI + SQLAlchemy async + Alembic + Postgres backend
- Auth: JWT access + rotating refresh tokens, argon2, roles, audit log
- React 19 + Vite frontend: login page, protected route, auth context
- Docker Compose: postgres, redis, migrate, api, worker (placeholder), frontend/nginx

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

frontend/package.json

@@ -0,0 +1,27 @@
+{
+  "name": "frontend",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc -b && vite build",
+    "lint": "oxlint",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "@tanstack/react-query": "^5.103.2",
+    "react": "^19.2.8",
+    "react-dom": "^19.2.8",
+    "react-router-dom": "^7.18.4"
+  },
+  "devDependencies": {
+    "@types/node": "^24.13.3",
+    "@types/react": "^19.2.18",
+    "@types/react-dom": "^19.2.7",
+    "@vitejs/plugin-react": "^6.1.1",
+    "oxlint": "^1.81.0",
+    "typescript": "~6.0.2",
+    "vite": "^8.3.0"
+  }
+}