build: 📦 移除color依赖，自定义工具类

package.json

@@ -53,7 +53,6 @@
     "axios": "^1.7.7",
     "codemirror": "^5.65.17",
     "codemirror-editor-vue3": "^2.7.0",
-    "color": "^4.2.3",
     "echarts": "^5.5.1",
     "element-plus": "^2.8.1",
     "exceljs": "^4.4.0",
@@ -73,7 +72,6 @@
     "@commitlint/config-conventional": "^18.6.3",
     "@iconify-json/ep": "^1.2.0",
     "@types/codemirror": "^5.60.15",
-    "@types/color": "^3.0.6",
     "@types/lodash": "^4.17.7",
     "@types/node": "^20.16.5",
     "@types/nprogress": "^0.2.3",