Implement SSH Phase 13.2: Complete SSH_MSG_GLOBAL_REQUEST handling

- Add SshSecurityConfig parameter to port_forward.rs
- Integrate security validation in handle_tcpip_forward
- Add validate_tcpip_forward_request call
- Modify server.rs to pass security_config to handle_global_request
- Complete SSH_MSG_GLOBAL_REQUEST processing logic
- Support tcpip-forward request with security validation
- All compilation tests passed successfully

Phase 13.1-13.2 completed: Enterprise security configuration + Global request handling

markbase-core/src/ssh_server/server.rs

@@ -376,10 +376,10 @@ fn handle_ssh_service_loop(
                     info!("Sent SSH_MSG_REQUEST_FAILURE (TCP forwarding disabled)");
                     continue;
                 }
-                drop(security);  // 释放锁
                 
-                // Phase 13: 调用PortForwardManager处理
-                let (success, response) = port_forward_manager.handle_global_request(&packet.payload)?;
+                // Phase 13.2: 调用PortForwardManager处理（传递security_config）
+                let (success, response) = port_forward_manager.handle_global_request(&packet.payload, &security)?;
+                drop(security);  // 释放锁
                 
                 if success {
                     if let Some(response_data) = response {