migrate auth v2 code

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

@@ -4,6 +4,7 @@
 	import { Chart, registerables } from 'chart.js';
 	import { ViewHeader, CardGrid, Card } from '$lib/components';
 	import { formatDDMMYY } from '$lib/format';
+	import { handleOf } from '@shared/slugify';
 
 	Chart.register(...registerables);
 
@@ -138,7 +139,7 @@
 								<span class="dot" style="background:{s.memberColor}"></span>
 								<span class="member-name">{s.memberName}</span>
 								{#if m}
-									<a href="/{famSlug}/{m.name}" class="kanban-link">Kanban →</a>
+									<a href="/{famSlug}/{handleOf(m.username)}" class="kanban-link">Kanban →</a>
 								{/if}
 							</div>
 							<div class="donut-wrap">