feat: app context

frontend/package.json

@@ -16,6 +16,8 @@
     "@radix-ui/react-separator": "^1.1.4",
     "@radix-ui/react-slot": "^1.2.2",
     "@tailwindcss/vite": "^4.1.4",
+    "@tanstack/react-query": "^5.75.6",
+    "axios": "^1.9.0",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "i18next": "^25.0.2",
@@ -35,6 +37,7 @@
   },
   "devDependencies": {
     "@eslint/js": "^9.22.0",
+    "@tanstack/eslint-plugin-query": "^5.74.7",
     "@types/node": "^22.15.3",
     "@types/react": "^19.0.10",
     "@types/react-dom": "^19.0.4",