fix: git clone 操作 timeout 设为 120s

wwwroot/api/cockpit_chat.dspy

@@ -895,7 +895,7 @@ if action == 'send_message':
             # 特殊处理：包含"到本地""到工作区"→只保留 git clone url
             cmd = re.sub(r'(\s+(到本地|到工作区|到workspace).*)', '', cmd).strip()
             workdir = ctx.get('workspace_dir', '') or '/d/pipeline/workspaces'
-            result = await shell_exec(cmd, workdir=workdir)
+            result = await shell_exec(cmd, workdir=workdir, timeout=120 if 'git clone' in cmd else 60)
             if result['rc'] == 0:
                 out = result['stdout'].strip()
                 agent_reply = f"执行成功。{'输出：' + out[:500] if out else '(无输出)'}"