fix: remove unused delete_item handler and add accessors for unused fields

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

src/config.rs

@@ -46,6 +46,12 @@ pub struct Settings {
     pub digest: Option<String>,
 }
 
+impl Settings {
+    pub fn verbose(&self) -> u8 {
+        self.verbose
+    }
+}
+
 impl Settings {
     /// Create unified settings from config and args with proper priority
     pub fn new(args: &Args, default_dir: PathBuf) -> Result<Self> {