refactor: 移除未使用的代码和资源，优化项目结构

- 删除未使用的图片、SVG图标和组件
- 清理废弃的代码文件和依赖项
- 简化UI组件接口定义
- 更新部分文案为中文
- 移除博客相关功能
- 添加Telegram联系方式

package.json

@@ -13,7 +13,6 @@
     "lint:fix": "eslint --fix"
   },
   "dependencies": {
-    "@content-collections/mdx": "^0.2.2",
     "@radix-ui/react-accordion": "^1.2.12",
     "@radix-ui/react-avatar": "^1.1.11",
     "@radix-ui/react-icons": "^1.3.2",
@@ -23,7 +22,6 @@
     "@tailwindcss/postcss": "^4.1.18",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
-    "content-collections": "^0.2.1",
     "lucide-react": "^0.562.0",
     "motion": "^12.23.27",
     "next": "16.1.1",
@@ -31,25 +29,19 @@
     "react": "^19.2.3",
     "react-dom": "^19.2.3",
     "react-markdown": "^10.1.0",
-    "rehype-pretty-code": "^0.14.1",
-    "remark-gfm": "^4.0.1",
-    "shiki": "^3.20.0",
     "tailwind-merge": "^3.4.0",
     "tailwindcss": "^4.1.18",
-    "tailwindcss-animate": "^1.0.7",
     "tw-animate-css": "^1.4.0"
   },
   "devDependencies": {
-    "@content-collections/core": "^0.13.1",
-    "@content-collections/next": "^0.2.10",
     "@tailwindcss/typography": "^0.5.19",
     "@types/node": "^25.0.3",
     "@types/react": "^19.2.7",
     "@types/react-dom": "^19.2.3",
     "eslint": "^9.39.2",
     "eslint-config-next": "16.1.1",
+    "knip": "^5.82.1",
     "postcss": "^8.5.6",
-    "typescript": "^5.9.3",
-    "zod": "^4.3.5"
+    "typescript": "^5.9.3"
   }
-}
+}