Unify workspace dropdowns; Update layouts (#458)

Unified Account and Workspace drop-downs; Layout updates, now header lives within the PageBody component; Sidebars now use floating variant

packages/i18n/src/navigation.ts

@@ -0,0 +1,10 @@
+import { createNavigation } from 'next-intl/navigation';
+
+import { routing } from './routing';
+
+/**
+ * Creates navigation utilities for next-intl.
+ * These utilities are locale-aware and automatically handle routing with locales.
+ */
+export const { Link, redirect, usePathname, useRouter, permanentRedirect } =
+  createNavigation(routing);