feat: 添加多个新项目及更新文档

- 新增 GPT_register+duckmail+CPA+autouploadsub2api (DuckMail + OAuth + Sub2Api 注册工具)
- 新增 team_all-in-one (ChatGPT Team 一键注册工具)
- 新增 Code-Patch 项目
- 新增 ABCard 子模块 (ChatGPT Business/Plus 自动开通)
- 新增 cloudflare_temp_email 子模块 (Cloudflare 临时邮箱服务)
- 添加 .gitignore 文件
- 更新 README.md (新增项目导航、子模块说明)
- 添加 CHANGELOG.md

Code-Patch/frontend/src/composables/useWebSocket.js

@@ -0,0 +1,40 @@
+import { onUnmounted } from 'vue'
+
+/**
+ * Composable for managing a WebSocket connection.
+ * Automatically closes the socket when the component is unmounted.
+ *
+ * @param {string} path - Path template, e.g. '/ws/sessions/{id}'
+ * @param {object} handlers - { onMessage(msg), onError(e) }
+ * @returns {{ open(id: string|number): void, close(): void }}
+ */
+export function useWebSocket(path, handlers = {}) {
+  let ws = null
+
+  function open(id) {
+    close()
+    const proto = location.protocol === 'https:' ? 'wss:' : 'ws:'
+    const url = `${proto}//${location.host}${path.replace('{id}', id)}`
+    ws = new WebSocket(url)
+
+    ws.onmessage = (e) => {
+      const msg = JSON.parse(e.data)
+      if (msg.type !== 'ping') {
+        handlers.onMessage?.(msg)
+      }
+    }
+
+    ws.onerror = (e) => handlers.onError?.(e)
+  }
+
+  function close() {
+    if (ws) {
+      ws.close()
+      ws = null
+    }
+  }
+
+  onUnmounted(close)
+
+  return { open, close }
+}