refactor: replace meta_name with MetaPluginType from strum

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

src/meta_plugin/command.rs

@@ -9,7 +9,6 @@ pub struct MetaPluginCommand {
     pub program: String,
     pub args: Vec<String>,
     pub supported: bool,
-    pub meta_name: String,
     pub split_whitespace: bool,
     process: Option<Child>,
     writer: Option<Box<dyn Write>>,
@@ -67,7 +66,6 @@ impl MetaPluginCommand {
             program: program_path.map_or_else(|_| program.to_string(), |p| p.to_string_lossy().to_string()),
             args: args.iter().map(|s| s.to_string()).collect(),
             supported,
-            meta_name,
             split_whitespace,
             process: None,
             writer: None,
@@ -158,7 +156,7 @@ impl MetaPlugin for MetaPluginCommand {
 
                     // Use process_metadata_outputs to handle output mapping
                     if let Some(meta_data) = crate::meta_plugin::process_metadata_outputs(
-                        &self.meta_name, 
+                        &self.meta_type().to_string(), 
                         serde_yaml::Value::String(result), 
                         &self.outputs
                     ) {
@@ -192,8 +190,8 @@ impl MetaPlugin for MetaPluginCommand {
         }
     }
 
-    fn meta_name(&self) -> String {
-        self.meta_name.clone()
+    fn meta_type(&self) -> MetaPluginType {
+        MetaPluginType::Command
     }
     
     fn program_info(&self) -> Option<(&str, Vec<&str>)> {