bugfix: the flow for trial and accept invitation (org + staff)is now unified. all navigate to dshboard if succesfull.

frontend/src/lib/hooks/useEnterAppWhenAuthenticated.ts

@@ -0,0 +1,23 @@
+'use client';
+
+import { useEffect } from 'react';
+import { useRouter } from '@/i18n/navigation';
+import { appPathAfterAuth } from '@/lib/auth/postAuthRedirect';
+import { useAuth } from '@/lib/hooks/useAuth';
+
+/**
+ * When a session already exists (or was just created on this page), enter the app.
+ * Use on /login and /register only — not on invite pages, where a logged-in visitor
+ * must still be able to finish accept before navigating.
+ */
+export function useEnterAppWhenAuthenticated() {
+  const { user, isAuthReady, isLoading, organizations, currentOrganization } = useAuth();
+  const router = useRouter();
+
+  useEffect(() => {
+    if (!isAuthReady || !user || isLoading) return;
+    const orgReady = organizations.length <= 1 || currentOrganization;
+    if (!orgReady) return;
+    router.push(appPathAfterAuth());
+  }, [isAuthReady, user, isLoading, organizations, currentOrganization, router]);
+}