Add bunext playground for local component development

Runs at http://localhost:7010 via bun run dev. The playground imports the library from src through a committed symlink and tsconfig path alias, so component edits hot-reload without a build step. It has its own install root and is excluded from the published package.

src/form/SearchSelect.tsx

@@ -34,6 +34,11 @@ export type TWUISearchSelectProps<
     defaultValues?: KeyType[];
     changeHandler?: (value: KeyType | KeyType[] | "", data?: T | T[]) => void;
     placeholder?: string;
+    /**
+     * Whether the dropdown should still be open
+     * after a selection is made
+     */
+    keep_dropdown_open_on_commit?: boolean;
 };
 
 /**
@@ -64,6 +69,7 @@ export default function SearchSelect<
     placeholder,
     multiple = false,
     defaultValues,
+    keep_dropdown_open_on_commit,
     ...props
 }: TWUISearchSelectProps<KeyType, T>) {
     const rootRef = React.useRef<HTMLDivElement>(null);
@@ -160,17 +166,18 @@ export default function SearchSelect<
                 setSelected(next);
                 notify(next);
                 setQuery("");
-                setOpen(true);
-                setActiveIndex(0);
                 inputRef.current?.focus();
             } else {
                 const next = [option];
                 setSelected(next);
                 setQuery(getOptionLabel(option));
-                setOpen(true);
-                setActiveIndex(0);
                 notify(next);
             }
+
+            const commit_open_status = keep_dropdown_open_on_commit || false;
+
+            setActiveIndex(0);
+            setOpen(commit_open_status);
         },
         [multiple, notify, selected],
     );