feat!: 文档部署改为 docs 分支自动同步，移除 Gitea 工作流与 wrangler 脚本

Gitea 已配置为 GitHub 的镜像，主仓库落在 GitHub：

- 删除 .gitea/（runner 已弃用，六轮实跑不稳定）与
  scripts/deploy_docs.sh（wrangler Direct Upload 路径随之退役，
  CLOUDFLARE_* secrets 不再被 CI 需要）
- deploy-docs.yml 重写：main 的文档文件变更时自动把纯文档组装进
  docs 孤儿分支并强推——Cloudflare Pages 直连 GitHub、生产分支选
  docs、构建命令留空、输出目录 / 即完成零构建接入
- index.html 仓库链接与 README/GUIDE 安装命令补 GitHub 地址；
  CHANGELOG 合并原先两条 CI/部署条目

dist/index.html

@@ -0,0 +1,88 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+  <meta charset="UTF-8">
+  <title>qqbotsdk 文档</title>
+  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <meta name="description" content="QQ 官方机器人 Python SDK：使用指南、API 参考、架构设计与示例">
+  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/docsify@4/themes/vue.css">
+  <style>
+    /* mermaid 图居中并自适应宽度 */
+    .markdown-section .mermaid {
+      text-align: center;
+    }
+    .markdown-section .mermaid svg {
+      max-width: 100%;
+      height: auto;
+    }
+  </style>
+</head>
+<body>
+  <div id="app">加载中…</div>
+
+  <script>
+    window.$docsify = {
+      name: 'qqbotsdk',
+      repo: 'https://gitea.4i.hk/hhhge/qqbotsdk',
+      // 相对链接按当前页面所在目录解析（与 GitHub 行为一致），docs/*.md 的互链才能正确跳转
+      relativePath: true,
+      loadSidebar: true,
+      subMaxLevel: 3,
+      auto2top: true,
+      themeColor: '#0f8bff',
+      search: {
+        paths: 'auto',
+        placeholder: '搜索文档',
+        noData: '没有找到相关结果',
+        depth: 3,
+      },
+      copyCode: {
+        buttonText: '复制',
+        errorText: '复制失败',
+        successText: '已复制',
+      },
+      pagination: {
+        previousText: '上一页',
+        nextText: '下一页',
+      },
+      // README 里的 examples/ 链接指向示例索引页
+      alias: {
+        '/examples': '/examples/README.md',
+        '/examples/': '/examples/README.md',
+      },
+      plugins: [
+        // 把 ```mermaid 代码块替换为 div 后交给 mermaid 渲染（架构图/时序图）
+        function (hook) {
+          hook.doneEach(function () {
+            var blocks = document.querySelectorAll('pre code.lang-mermaid, pre code.language-mermaid');
+            if (!blocks.length || !window.mermaid) return;
+            blocks.forEach(function (el) {
+              var pre = el.closest('pre') || el;
+              var div = document.createElement('div');
+              div.className = 'mermaid';
+              div.textContent = el.textContent;
+              pre.replaceWith(div);
+            });
+            mermaid.run({ querySelector: 'div.mermaid:not([data-processed])', suppressErrors: true });
+          });
+        },
+      ],
+    };
+  </script>
+
+  <script src="https://cdn.jsdelivr.net/npm/docsify@4/lib/docsify.min.js"></script>
+  <!-- prism 语言包需在 docsify 之后引入（docsify 会重建 window.Prism，先加载会被覆盖） -->
+  <script src="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/components/prism-python.min.js"></script>
+  <script src="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/components/prism-toml.min.js"></script>
+  <script src="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/components/prism-bash.min.js"></script>
+  <script src="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/components/prism-ini.min.js"></script>
+  <script src="https://cdn.jsdelivr.net/npm/docsify@4/lib/plugins/search.min.js"></script>
+  <script src="https://cdn.jsdelivr.net/npm/docsify-copy-code@3/dist/docsify-copy-code.min.js"></script>
+  <script src="https://cdn.jsdelivr.net/npm/docsify-pagination@2/dist/docsify-pagination.min.js"></script>
+  <script src="https://cdn.jsdelivr.net/npm/mermaid@10/dist/mermaid.min.js"></script>
+  <script>
+    mermaid.initialize({ startOnLoad: false, securityLevel: 'loose' });
+  </script>
+</body>
+</html>