refactor: remove redundant meta_name field and simplify default outputs

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

src/meta_plugin/binary.rs

@@ -16,7 +16,6 @@ impl BinaryMetaPlugin {
         outputs: Option<std::collections::HashMap<String, serde_yaml::Value>>,
     ) -> BinaryMetaPlugin {
         let mut base = crate::meta_plugin::BaseMetaPlugin::new();
-        base.meta_name = "binary".to_string();
         
         // Initialize with helper function
         base.initialize_plugin(
@@ -138,9 +137,6 @@ impl MetaPlugin for BinaryMetaPlugin {
         self.base.outputs_mut()
     }
     
-    fn default_outputs(&self) -> Vec<String> {
-        vec!["binary".to_string()]
-    }
     
     fn options(&self) -> &std::collections::HashMap<String, serde_yaml::Value> {
         self.base.options()