refactor: update empty hashmap initialization with lazy initialization

Co-authored-by: aider (openai/andrew/openrouter/deepseek/deepseek-chat-v3.1) <aider@aider.chat>

src/meta_plugin/program.rs

@@ -162,9 +162,10 @@ impl MetaPlugin for MetaPluginProgram {
                     self.result = Some(result);
 
                     // Create metadata to be returned
+                    let result_clone = result.clone();
                     metadata.push(crate::meta_plugin::MetaData {
                         name: self.meta_name.clone(),
-                        value: result,
+                        value: result_clone,
                     });
                 }
             } else {