⬆️(frontend) upgrade frontend to ESLint 9

Manually upgrade the frontend codebase to ESLint 9.

Update the linting configuration and related code where required to
maintain compatibility with the new major version.

src/frontend/package.json

@@ -8,6 +8,7 @@
     "build": "panda codegen && tsc -b && vite build",
     "build:debug": "VITE_ANALYZE=true npm run build -- --debug",
     "lint": "eslint . --ext ts,tsx --report-unused-disable-directives --max-warnings 0",
+    "lint:fix": "eslint . --fix",
     "preview": "vite preview",
     "i18n:extract": "npx i18next -c i18next-parser.config.json",
     "format": "prettier --write ./src",
@@ -45,6 +46,7 @@
     "wouter": "3.9.0"
   },
   "devDependencies": {
+    "@eslint/js": "9.39.4",
     "@pandacss/dev": "1.11.1",
     "@tanstack/eslint-plugin-query": "5.91.4",
     "@tanstack/react-query-devtools": "5.91.3",
@@ -52,18 +54,19 @@
     "@types/node": "22.16.0",
     "@types/react": "18.3.12",
     "@types/react-dom": "18.3.1",
-    "@typescript-eslint/eslint-plugin": "8.35.1",
-    "@typescript-eslint/parser": "8.35.1",
     "@vitejs/plugin-react": "5.1.4",
-    "eslint": "8.57.0",
+    "eslint": "9.39.4",
     "eslint-config-prettier": "10.1.5",
     "eslint-plugin-jsx-a11y": "6.10.2",
+    "eslint-plugin-react": "7.37.5",
     "eslint-plugin-react-hooks": "5.2.0",
     "eslint-plugin-react-refresh": "0.4.20",
+    "globals": "17.6.0",
     "postcss": "8.5.14",
     "prettier": "3.8.1",
     "rollup-plugin-visualizer": "7.0.1",
     "typescript": "5.8.3",
+    "typescript-eslint": "8.60.1",
     "vite": "7.3.2",
     "vite-plugin-svgr": "5.2.0",
     "vite-tsconfig-paths": "6.1.1"