fix: Correctly calculate info table column width for truncation

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

src/modes/info.rs

@@ -137,22 +137,34 @@ fn show_item(
     // Calculate the maximum width for the last column if we're in a terminal
     let terminal_width = crate::modes::common::get_terminal_width();
     if std::io::stdout().is_terminal() && terminal_width > 0 {
-        // Estimate widths of other columns (assuming first column is the longest label)
-        // This is a simplification, but should work for most cases
+        // For the info table, we always have exactly 2 columns
+        // Find the maximum width of the first column (labels)
         let max_label_width = rows.iter()
             .map(|row| row.get_cell(0).map(|c| c.get_content().chars().count()).unwrap_or(0))
             .max()
             .unwrap_or(0);
         
-        // Calculate the maximum width for the value column
-        let max_value_width = crate::modes::common::calculate_last_column_width(&[max_label_width], terminal_width);
+        // Each row has:
+        // 1. Label cell: max_label_width + 2 padding
+        // 2. Border character: '│' (1 character)
+        // 3. Value cell: ? + 2 padding
+        // Total width used: (max_label_width + 2) + 1 + (value_width + 2)
+        // We want this to be <= terminal_width
+        
+        // So max value width is: terminal_width - (max_label_width + 2 + 1 + 2)
+        let max_value_width = terminal_width.saturating_sub(max_label_width + 5);
         
         // Process meta rows to truncate values if necessary
         for (meta_name, meta_value) in meta_rows {
             let truncated_value = if max_value_width > 0 {
                 crate::modes::common::truncate_with_ellipsis(&meta_value, max_value_width)
             } else {
-                meta_value
+                // If max_value_width is 0, we can't show anything, but let's at least show something
+                if max_value_width == 0 {
+                    "…".to_string()
+                } else {
+                    meta_value
+                }
             };
             rows.push(Row::new(vec![
                 Cell::new(&meta_name).with_style(Attr::Bold),