fix: devops直接用message_text作命令，去掉前缀

wwwroot/api/cockpit_chat.dspy

@@ -876,12 +876,12 @@ if action == 'send_message':
                 else:
                     agent_reply = f"❌ 导入失败：{msg}"
         elif intent_type == 'devops':
-            description = intent.get('description', '') or message_text
-            # 去掉中文前缀（"执行命令："、"运行："等）
+            # LLM 分类器的 description 可能是自然语言，直接用用户原始消息作为命令
+            cmd = message_text.strip()
             import re
-            description = re.sub(r'^(执行命令[：:]|运行[：:])', '', description.strip())
+            cmd = re.sub(r'^(执行命令[：:]|运行[：:]|帮我\s*)', '', cmd).strip()
             workdir = ctx.get('workspace_dir', '') or '/d/pipeline/workspaces'
-            result = await shell_exec(description, workdir=workdir)
+            result = await shell_exec(cmd, workdir=workdir)
             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)'}"