update login flow

frontend/src/routes/[fam]/+layout.svelte

@@ -114,12 +114,14 @@
 	// session exists. $effect (not onMount) so it also fires when the session
 	// appears after the layout was already mounted — e.g. a member redeeming
 	// their OTP on /{fam}/join/{username} then landing on /{fam}/{username}.
+	// The handle comes from the session (not page.params) so jump-back-in lands
+	// on the user's own dashboard even from the bare /{fam} page.
 	$effect(() => {
 		if (!page.data.session) return;
 		recordShortcut({
 			famSlug: (page.data.fam?.slug as string) || page.params.fam || '',
 			famName: (page.data.fam?.name as string) || page.params.fam || '',
-			userName: page.data.role === 'parent' ? '' : page.params.username || ''
+			userName: page.data.session.username || page.params.username || ''
 		});
 	});