fix: update meta description for improved clarity and accuracy

web/index.html

@@ -7,7 +7,7 @@
     <meta name="theme-color" content="#ffffff" />
     <meta
       name="description"
-      content="OpenAI 接口聚合管理，支持多种渠道包括 Azure，可用于二次分发管理 key，仅单可执行文件，已打包好 Docker 镜像，一键部署，开箱即用"
+      content="A unified AI model hub for aggregation & distribution. It supports cross-converting various LLMs into OpenAI-compatible, Claude-compatible, or Gemini-compatible formats. A centralized gateway for personal and enterprise model management."
     />
     <meta name="generator" content="new-api" />
     <title>New API</title>