fix: CAPA owner dashboard — priority null guard, nulls-last due_date sort

app/(protected)/capa-owner/page.tsx

@@ -37,7 +37,7 @@ export default async function CapaOwnerPage() {
     .from('capa_actions')
     .select('id, description, due_date, priority, status, incident_id, incidents (reference_no)')
     .eq('owner_user_id', user.id)
-    .order('due_date', { ascending: true })
+    .order('due_date', { ascending: true, nullsFirst: false })
 
   const rows = capas ?? []
   const openCount = rows.filter(c => ['open', 'in_progress', 'reopened'].includes(c.status)).length
@@ -90,9 +90,11 @@ export default async function CapaOwnerPage() {
                     <p className={`text-xs mt-1 ${isOverdue ? 'text-red-600 font-semibold' : 'text-gray-400'}`}>
                       {capa.due_date ? `Due ${new Date(capa.due_date as string).toLocaleDateString('en-MY')}` : 'No due date'}
                     </p>
-                    <p className={`text-xs mt-0.5 ${PRIORITY_COLORS[capa.priority as string] ?? ''}`}>
-                      {(capa.priority as string)?.toUpperCase()} priority
-                    </p>
+                    {capa.priority && (
+                      <p className={`text-xs mt-0.5 ${PRIORITY_COLORS[capa.priority as string] ?? ''}`}>
+                        {(capa.priority as string).toUpperCase()} priority
+                      </p>
+                    )}
                   </div>
                 </div>
               </div>