chore: v1.4.1 重写README、清理死代码、更新文档

- 重写README.md，精简结构，添加AI辅助开发声明(GLM/Qwen/Doubao/MIMO)

- 清理6项死代码: WhitelistService.isSuperAdmin、PersonaResponse record、AiBadgeHeadProcessor空操作类、utils/api.ts、utils/gravatar.ts、canvas-confetti依赖

- 版本号更新为1.4.1

- 更新CHANGELOG.md添加v1.4.1条目

ui/package.json

@@ -31,7 +31,6 @@
     "@halo-dev/ui-plugin-bundler-kit": "^2.23.0",
     "@iconify-json/ri": "^1.2.6",
     "@tsconfig/node20": "^20.1.6",
-    "@types/canvas-confetti": "^1.9.0",
     "@types/jsdom": "^21.1.7",
     "@types/node": "^20.19.1",
     "@vitest/eslint-plugin": "^1.2.7",