Resumen de los cambios del fix de navegación:

LibraryPage.tsx:778 — reemplazó useSearch({ from: '/' }) por useRouterState + URLSearchParams. Ahora funciona tanto desde / como desde /library.
WorkspacePage.tsx:206-209 — handleBack() navega a /library (con o sin ?org=uuid) en lugar de /.
workspace-back-button.test.ts — backTo actualizado a /library y /library?org=... en los 6 tests.
library-ui.test.tsx — mock de useSearch → useRouterState (devuelve { location: { search: '' } }).

src/router.tsx

@@ -103,6 +103,12 @@ const indexRoute = createRoute({
   component: LibraryPage,
 })
 
+const libraryRoute = createRoute({
+  getParentRoute: () => rootRoute,
+  path: '/library',
+  component: LibraryPage,
+})
+
 const importRoute = createRoute({
   getParentRoute: () => rootRoute,
   path: '/import',
@@ -170,6 +176,7 @@ const routeTree = rootRoute.addChildren([
   resetPasswordRoute,
   confirmInviteRoute,
   indexRoute,
+  libraryRoute,
   importRoute,
   workspaceRoute,
   reportRoute,