将前端 TailwindCSS 版本从v3 升级到 v4

dashboard/package.json

@@ -159,6 +159,7 @@
     "@use-gesture/react": "^10.3.1"
   },
   "devDependencies": {
+    "@tailwindcss/vite": "^4.2.1",
     "@eslint/js": "^9.39.1",
     "@testing-library/dom": "^10.4.1",
     "@testing-library/jest-dom": "^6.9.1",
@@ -169,7 +170,6 @@
     "@types/react-dom": "^19.2.3",
     "@vitejs/plugin-react": "^5.1.2",
     "@vitest/ui": "^4.0.18",
-    "autoprefixer": "^10.4.22",
     "electron": "^40.6.1",
     "electron-builder": "^26.8.1",
     "electron-store": "11.0.2",
@@ -179,10 +179,9 @@
     "eslint-plugin-react-refresh": "^0.4.24",
     "globals": "^16.5.0",
     "jsdom": "^28.1.0",
-    "postcss": "^8.5.6",
     "prettier": "^3.7.4",
     "prettier-plugin-tailwindcss": "^0.7.2",
-    "tailwindcss": "^3",
+    "tailwindcss": "^4.2.1",
     "typescript": "~5.9.3",
     "typescript-eslint": "^8.49.0",
     "vite": "^7.2.7",