feat: adjust report format and enforce image persistence

utils/format_execution_result.py

@@ -0,0 +1,25 @@
+
+from typing import Any, Dict
+
+
+def format_execution_result(result: Dict[str, Any]) -> str:
+    """格式化执行结果为用户可读的反馈"""
+    feedback = []
+    
+    if result['success']:
+        feedback.append("✅ 代码执行成功")
+        
+        if result['output']:
+            feedback.append(f"📊 输出结果：\n{result['output']}")
+        
+        if result.get('variables'):
+            feedback.append("📋 新生成的变量：")
+            for var_name, var_info in result['variables'].items():
+                feedback.append(f"  - {var_name}: {var_info}")
+    else:
+        feedback.append("❌ 代码执行失败")
+        feedback.append(f"错误信息: {result['error']}")
+        if result['output']:
+            feedback.append(f"部分输出: {result['output']}")
+    
+    return "\n".join(feedback)