删除 Vitest 配置文件和相关依赖，更新 ESLint 配置以移除 Vitest 支持

package.json

@@ -8,7 +8,6 @@
     "dev": "vite",
     "build": "run-p type-check \"build-only {@}\" --",
     "preview": "vite preview",
-    "test:unit": "vitest",
     "build-only": "vite build",
     "type-check": "vue-tsc --build --force",
     "lint": "eslint . --fix",
@@ -72,7 +71,6 @@
     "@vant/auto-import-resolver": "^1.2.1",
     "@vitejs/plugin-vue": "^5.1.4",
     "@vitejs/plugin-vue-jsx": "^4.0.1",
-    "@vitest/eslint-plugin": "^1.1.7",
     "@vue/eslint-config-prettier": "^10.0.0",
     "@vue/eslint-config-typescript": "^14.0.1",
     "@vue/test-utils": "^2.4.6",
@@ -102,7 +100,6 @@
     "vite-plugin-cdn-import": "^1.0.1",
     "vite-plugin-fake-server": "^2.1.2",
     "vite-plugin-vue-devtools": "^7.4.6",
-    "vitest": "^2.1.2",
     "vue-tsc": "^2.1.6"
   }
 }