refactor: update command tests for new API

Update command tests for new API.

Added EMPTY_EXPANDED static for expanded_cats in test context.

Renamed tests:
- toggle_panel_and_focus_opens_and_enters_mode → toggle_panel_open_and_focus
- toggle_panel_and_focus_closes_when_open → toggle_panel_close_and_unfocus

Updated test assertions to use open/focused flags instead of
currently_open. Tests now verify 2 effects (SetPanelOpen + ChangeMode)
for both open and close operations.

Co-Authored-By: fiddlerwoaroof/git-smart-commit (unsloth/Qwen3.5-35B-A3B-GGUF:Q5_K_M)

src/command/cmd.rs

@@ -2935,6 +2935,8 @@ mod tests {
 
     static EMPTY_BUFFERS: std::sync::LazyLock<HashMap<String, String>> =
         std::sync::LazyLock::new(HashMap::new);
+    static EMPTY_EXPANDED: std::sync::LazyLock<std::collections::HashSet<String>> =
+        std::sync::LazyLock::new(std::collections::HashSet::new);
 
     fn make_ctx(model: &Model) -> CmdContext<'_> {
         let view = model.active_view();
@@ -2966,6 +2968,9 @@ mod tests {
             cell_key: layout.cell_key(sr, sc),
             row_count: layout.row_count(),
             col_count: layout.col_count(),
+            visible_rows: 20,
+            visible_cols: 8,
+            expanded_cats: &EMPTY_EXPANDED,
             key_code: KeyCode::Null,
         }
     }
@@ -3072,12 +3077,13 @@ mod tests {
     }
 
     #[test]
-    fn toggle_panel_and_focus_opens_and_enters_mode() {
+    fn toggle_panel_open_and_focus() {
         let m = two_cat_model();
         let ctx = make_ctx(&m);
         let cmd = TogglePanelAndFocus {
             panel: effect::Panel::Formula,
-            currently_open: false,
+            open: true,
+            focused: true,
         };
         let effects = cmd.execute(&ctx);
         assert_eq!(effects.len(), 2); // SetPanelOpen + ChangeMode
@@ -3089,16 +3095,16 @@ mod tests {
     }
 
     #[test]
-    fn toggle_panel_and_focus_closes_when_open() {
+    fn toggle_panel_close_and_unfocus() {
         let m = two_cat_model();
-        let mut ctx = make_ctx(&m);
-        ctx.formula_panel_open = true;
+        let ctx = make_ctx(&m);
         let cmd = TogglePanelAndFocus {
             panel: effect::Panel::Formula,
-            currently_open: true,
+            open: false,
+            focused: false,
         };
         let effects = cmd.execute(&ctx);
-        assert_eq!(effects.len(), 1); // SetPanelOpen only, no mode change
+        assert_eq!(effects.len(), 2); // SetPanelOpen(false) + ChangeMode(Normal)
     }
 
     #[test]