feat: clear filter now always preserve the current focus

fixes #78

src-tauri/src/ui.rs

@@ -74,7 +74,18 @@ impl UI {
             Some(matches)
         } else {
             // preserve current focus when clearing the filter
-            self.select(self.view.get_best_focus(&self.focused));
+            // if the current focus is a stack, navigate right, and then left to cause
+            // last_selected to be set in order to preserve the current focus
+            if let Some(focused) = self.focused.as_ref() {
+                if focused.item.stack_id.is_none() {
+                    self.select_right();
+                    self.select_left();
+                }
+            } else {
+                // otherwise just lock in the current focus
+                self.select(self.view.get_best_focus(&self.focused));
+            }
+
             None
         };
         self.refresh_view(v);