feat: update CwdMetaPlugin to use new MetaPluginResponse interface

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

src/meta_plugin/system.rs

@@ -57,29 +57,44 @@ impl MetaPlugin for CwdMetaPlugin {
         true
     }
     
-    fn finalize(&mut self) -> Result<MetaPluginResponse> {
-        // Since we save during initialize(), return Ok to avoid duplicate saves
-        Ok(MetaPluginResponse::default())
+    fn finalize(&mut self) -> MetaPluginResponse {
+        MetaPluginResponse {
+            metadata: Vec::new(),
+            is_finalized: true,
+        }
     }
 
-    fn update(&mut self, _data: &[u8]) -> Result<PluginResponse> {
-        // No update needed
-        Ok(PluginResponse::default())
+    fn update(&mut self, _data: &[u8]) -> MetaPluginResponse {
+        MetaPluginResponse {
+            metadata: Vec::new(),
+            is_finalized: false,
+        }
     }
 
     fn meta_name(&self) -> String {
         self.meta_name.clone()
     }
     
-    fn initialize(&mut self, conn: &Connection, item_id: i64) -> Result<MetaPluginResponse> {
+    fn initialize(&mut self) -> MetaPluginResponse {
+        let mut metadata = Vec::new();
         let cwd = match env::current_dir() {
             Ok(path) => path.to_string_lossy().to_string(),
             Err(_) => "unknown".to_string(),
         };
-        // Use central output handler
-        self.save_meta(conn, item_id, "cwd", cwd)?;
-        self.is_saved = true;
-        Ok(())
+        
+        // Use process_metadata_outputs to handle output mapping
+        if let Some(meta_data) = crate::meta_plugin::process_metadata_outputs(
+            "cwd", 
+            cwd, 
+            &self.outputs
+        ) {
+            metadata.push(meta_data);
+        }
+        
+        MetaPluginResponse {
+            metadata,
+            is_finalized: false,
+        }
     }
     
     fn outputs(&self) -> &std::collections::HashMap<String, serde_yaml::Value> {