Separate floating sidebar hidden state

src-web/hooks/useFloatingSidebarHidden.ts

@@ -0,0 +1,13 @@
+import { useActiveWorkspaceId } from './useActiveWorkspaceId';
+import { useKeyValue } from './useKeyValue';
+
+export function useFloatingSidebarHidden() {
+  const activeWorkspaceId = useActiveWorkspaceId();
+  const { set, value } = useKeyValue<boolean>({
+    namespace: 'no_sync',
+    key: ['floating_sidebar_hidden', activeWorkspaceId ?? 'n/a'],
+    fallback: false,
+  });
+
+  return [value, set] as const;
+}