feat: 完善子图，添加路由函数和审核节点

backend/app/agent_subgraphs/contact/api_client.py

@@ -192,6 +192,45 @@ class ContactAPIClient:
             "suggestion": "是否添加这些联系人？"
         }
 
+    # 公共方法
+    def list_contacts(self, user_id: str = "default") -> List[Contact]:
+        """查询联系人列表"""
+        return self.list_contacts_mock(user_id)
+
+    def add_contact(self, user_id: str, contact: Contact) -> bool:
+        """添加联系人"""
+        return self.save_contact_mock(user_id, contact)
+
+    def list_emails(self, user_id: str = "default") -> List[Email]:
+        """查询邮件列表"""
+        return self.list_emails_mock()
+
+    def generate_email_draft(self, query: str) -> Dict[str, str]:
+        """生成邮件草稿"""
+        return self.generate_email_draft_mock(query)
+
+    def send_email(self, user_id: str, recipient: str, subject: str, body: str) -> bool:
+        """发送邮件"""
+        result = self.send_email_mock(recipient, subject, body)
+        return result.get("success", False)
+
+    def sniff_contacts(self, query: str) -> List[Contact]:
+        """智能嗅探联系人"""
+        result = self.sniff_contacts_mock(query)
+        contact_dicts = result.get("contacts", [])
+        return [
+            Contact(
+                id=str(i+1),
+                name=c.get("name", ""),
+                phone=c.get("phone", ""),
+                email=c.get("email", ""),
+                company="",
+                position="",
+                created_at=datetime.now().isoformat()
+            )
+            for i, c in enumerate(contact_dicts)
+        ]
+
 
 # 单例实例
 contact_api = ContactAPIClient()