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/mod.rs

@@ -185,9 +185,15 @@ pub fn process_metadata_outputs(internal_name: &str, value: serde_yaml::Value, o
 }
 
 pub trait MetaPlugin where Self: 'static {
+    fn meta_type(&self) -> MetaPluginType;
+    
+    // For backward compatibility, provide meta_name() that uses meta_type()
+    fn meta_name(&self) -> String {
+        self.meta_type().to_string()
+    }
+    
     fn is_supported(&self) -> bool {
         true
-    }
     
     fn is_internal(&self) -> bool {
         true
@@ -218,7 +224,7 @@ pub trait MetaPlugin where Self: 'static {
         }
     }
 
-    fn meta_name(&self) -> String;
+    fn meta_type(&self) -> MetaPluginType;
     
     // Get program information for display in status
     fn program_info(&self) -> Option<(&str, Vec<&str>)> {
@@ -294,7 +300,7 @@ pub fn get_meta_plugin(
             // For command type, we need to parse the command from options
             let mut program_name = String::new();
             let mut args = Vec::new();
-            let mut meta_name = "command".to_string();
+            let meta_name = MetaPluginType::Command.to_string();
             let mut split_whitespace = true;
             
             if let Some(opts) = &options {