fix: Resolve compilation errors and warnings

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

src/modes/list.rs

@@ -195,7 +195,7 @@ pub fn mode_list(
             }
             
             // Apply padding if specified
-            if let Some((left_padding, right_padding)) = column.padding {
+            if let Some((_left_padding, _right_padding)) = column.padding {
                 // Note: comfy-table doesn't directly support padding, so we'd need to handle this
                 // by adding spaces to the content, or use a different approach
             }