fix(portal) : handle submittedBy as object or IRI in canEdit check

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/components/client-ticket/ClientTicketDetailModal.vue

@@ -239,9 +239,12 @@ const canEdit = computed(() => {
     if (status === 'done' || status === 'rejected') return false
     const userId = auth.user?.id
     if (!userId) return false
-    const submittedByIri = props.ticket.submittedBy
-    if (!submittedByIri) return false
-    return submittedByIri === `/api/users/${userId}`
+    const sub = props.ticket.submittedBy
+    if (!sub) return false
+    // submittedBy can be an IRI string or an embedded object
+    if (typeof sub === 'string') return sub === `/api/users/${userId}`
+    if (typeof sub === 'object' && 'id' in sub) return (sub as any).id === userId
+    return false
 })
 
 function startEdit() {