perf: optimize site images

package.json

@@ -9,6 +9,7 @@
     "docs:clean-dev": "vuepress-vite dev src --clean-cache",
     "docs:dev": "vuepress-vite dev src",
     "docs:update-package": "npx vp-update",
+    "optimize:images": "node scripts/optimize-images.mjs",
     "format": "prettier \"*.{js,json,yml}\" \"src/.vuepress/**/*.{ts,vue,scss}\" --write",
     "format:check": "prettier \"*.{js,json,yml}\" \"src/.vuepress/**/*.{ts,vue,scss}\" --check",
     "lint": "eslint \"src/.vuepress/**/*.{ts,vue}\" eslint.config.js",
@@ -21,8 +22,10 @@
     "@vuepress/plugin-search": "^2.0.0-rc.128",
     "eslint": "^9.39.1",
     "eslint-plugin-vue": "^10.6.1",
+    "glob": "^13.0.6",
     "prettier": "^3.6.2",
     "sass-embedded": "^1.99.0",
+    "sharp": "^0.34.5",
     "typescript-eslint": "^8.46.4",
     "vue": "^3.5.13",
     "vuepress": "^2.0.0-rc.28",