style: cleanup formatting and code style across the project

Clean up formatting and code style across the project.

- Remove unnecessary whitespace and empty lines in `src/model/cell.rs` ,
  `src/model/types.rs` , and `src/draw.rs` .
- Reformat long lines and function calls in `src/command/cmd.rs` ,
  `src/ui/grid.rs` , and `src/ui/tile_bar.rs` for better readability.
- Consolidate imports and simplify expressions in `src/command/keymap.rs` and
  `src/ui/app.rs` .

Co-Authored-By: fiddlerwoaroof/git-smart-commit (unsloth/gemma-4-26B-A4B-it-GGUF:UD-Q5_K_XL)

src/view/layout.rs

@@ -157,7 +157,7 @@ impl GridLayout {
                 .collect()
         };
         // Sort for deterministic ordering
-        records.sort_by(|a, b| a.0.0.cmp(&b.0.0));
+        records.sort_by(|a, b| a.0 .0.cmp(&b.0 .0));
 
         // Synthesize row items: one per record, labeled with its index
         let row_items: Vec<AxisEntry> = (0..records.len())
@@ -200,7 +200,7 @@ impl GridLayout {
             // col_item is a category name
             let found = record
                 .0
-                .0
+                 .0
                 .iter()
                 .find(|(c, _)| c == &col_item)
                 .map(|(_, v)| v.clone());
@@ -610,10 +610,7 @@ mod tests {
         m.category_mut("Col").unwrap().add_item("Y");
         // Only X has data; Y is entirely empty
         m.set_cell(
-            CellKey::new(vec![
-                ("Row".into(), "A".into()),
-                ("Col".into(), "X".into()),
-            ]),
+            CellKey::new(vec![("Row".into(), "A".into()), ("Col".into(), "X".into())]),
             CellValue::Number(1.0),
         );
 
@@ -643,7 +640,9 @@ mod tests {
         v.set_axis("_Dim", Axis::Column);
         let layout = GridLayout::new(&m, m.active_view());
         assert!(layout.is_records_mode());
-        let cols: Vec<String> = (0..layout.col_count()).map(|i| layout.col_label(i)).collect();
+        let cols: Vec<String> = (0..layout.col_count())
+            .map(|i| layout.col_label(i))
+            .collect();
         // All columns return synthetic keys
         let value_col = cols.iter().position(|c| c == "Value").unwrap();
         let key = layout.cell_key(0, value_col).unwrap();
@@ -663,7 +662,9 @@ mod tests {
         v.set_axis("_Index", Axis::Row);
         v.set_axis("_Dim", Axis::Column);
         let layout = GridLayout::new(&m, m.active_view());
-        let cols: Vec<String> = (0..layout.col_count()).map(|i| layout.col_label(i)).collect();
+        let cols: Vec<String> = (0..layout.col_count())
+            .map(|i| layout.col_label(i))
+            .collect();
 
         // Value column resolves to the cell value
         let value_col = cols.iter().position(|c| c == "Value").unwrap();