ci: add code check badges and coverage reports

adminfront/package.json

@@ -14,6 +14,7 @@
     "format": "biome format . --write",
     "preview": "vite preview",
     "test": "playwright test",
+    "test:coverage": "vitest run --coverage",
     "test:unit": "vitest run",
     "test:ui": "playwright test --ui",
     "i18n-scan": "cd .. && node tools/i18n-scanner/index.js && node tools/i18n-scanner/report.js"
@@ -43,6 +44,7 @@
     "zod": "^4.4.3"
   },
   "devDependencies": {
+    "@biomejs/biome": "2.4.16",
     "@playwright/test": "^1.60.0",
     "@testing-library/jest-dom": "^6.9.1",
     "@testing-library/react": "^16.3.2",
@@ -52,8 +54,10 @@
     "@types/react-dom": "^19.2.3",
     "@types/react-router-dom": "^5.3.3",
     "@vitejs/plugin-react": "^6.0.1",
+    "@vitest/coverage-v8": "4.1.6",
     "autoprefixer": "^10.5.0",
     "jsdom": "^28.1.0",
+    "playwright": "1.60.0",
     "postcss": "^8.5.14",
     "tailwindcss": "^3.4.19",
     "tailwindcss-animate": "^1.0.7",