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

apps/web/app/(marketing)/_components/site-header.tsx

@@ -1,17 +0,0 @@
-import { JWTUserData } from '@kit/supabase/types';
-import { Header } from '@kit/ui/marketing';
-
-import { AppLogo } from '~/components/app-logo';
-
-import { SiteHeaderAccountSection } from './site-header-account-section';
-import { SiteNavigation } from './site-navigation';
-
-export function SiteHeader(props: { user?: JWTUserData | null }) {
-  return (
-    <Header
-      logo={<AppLogo />}
-      navigation={<SiteNavigation />}
-      actions={<SiteHeaderAccountSection user={props.user ?? null} />}
-    />
-  );
-}