fix: Resolve compilation errors and warnings

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

src/config.rs

@@ -81,7 +81,7 @@ pub struct TableConfig {
     pub truncation_indicator: String,
 }
 
-#[derive(Debug, Clone, Serialize, Deserialize, Default)]
+#[derive(Debug, Clone, Serialize, Default)]
 pub struct ColumnConfig {
     pub name: String,
     pub label: String,

src/modes/common.rs

@@ -199,15 +199,18 @@ pub fn create_table_with_config(table_config: &crate::config::TableConfig) -> Ta
                 table.load_preset(comfy_table::presets::NOTHING);
             }
             // Add more presets as needed
-            table
         }
     }
     
     // Apply modifiers
     for modifier in &table_config.modifiers {
         match modifier.as_str() {
-            "UTF8_SOLID_INNER_BORDERS" => table.apply_modifier(comfy_table::modifiers::UTF8_SOLID_INNER_BORDERS),
-            "UTF8_ROUND_CORNERS" => table.apply_modifier(comfy_table::modifiers::UTF8_ROUND_CORNERS),
+            "UTF8_SOLID_INNER_BORDERS" => {
+                table.apply_modifier(comfy_table::modifiers::UTF8_SOLID_INNER_BORDERS);
+            }
+            "UTF8_ROUND_CORNERS" => {
+                table.apply_modifier(comfy_table::modifiers::UTF8_ROUND_CORNERS);
+            }
             _ => {} // Ignore unknown modifiers
         }
     }

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
             }