feat: add central metadata output handler

Co-authored-by: aider (openai/andrew/openrouter/qwen/qwen3-coder) <aider@aider.chat>

src/meta_plugin.rs

@@ -38,6 +38,19 @@ pub enum MetaPluginType {
     FullHostname,
 }
 
+/// Central function to handle metadata output with name mapping
+pub fn output_metadata(conn: &Connection, item_id: i64, name: &str, value: String, output_names: &std::collections::HashMap<String, String>) -> Result<()> {
+    let output_name = output_names.get(name).cloned().unwrap_or_else(|| name.to_string());
+    debug!("META: Saving metadata: item_id={}, name={}, value={}", item_id, output_name, value);
+    let meta = crate::db::Meta {
+        id: item_id,
+        name: output_name,
+        value,
+    };
+    crate::db::store_meta(conn, meta)?;
+    Ok(())
+}
+
 pub trait MetaPlugin {
     fn is_supported(&self) -> bool {
         true
@@ -64,17 +77,11 @@ pub trait MetaPlugin {
         Ok(())
     }
     
-    // Save metadata to database
+    // Save metadata to database using central output handler
     fn save_meta(&mut self, conn: &Connection, item_id: i64, value: String) -> Result<()> {
         let meta_name = self.meta_name();
-        debug!("META: Saving metadata: item_id={}, name={}, value={}", item_id, meta_name, value);
-        let meta = crate::db::Meta {
-            id: item_id,
-            name: meta_name,
-            value,
-        };
-        crate::db::store_meta(conn, meta)?;
-        Ok(())
+        // Default implementation: no output name mapping
+        output_metadata(conn, item_id, &meta_name, value, &std::collections::HashMap::new())
     }
     
     // Configure plugin with options