format seconds for show category

src/components/show_category.vue

@@ -1,4 +1,5 @@
 <script setup>
+	import { formatSeconds } from '../libs/time.js'
 	import CategoryChooser from './category_chooser.vue'
 	import { onMounted, ref, watch, defineProps, toRefs} from 'vue'
 
@@ -54,7 +55,7 @@
 			<tr v-for="session in categorySessions">
 				<td>{{session.id}}</td>
 				<td @click="copy">{{session.description}}</td>
-				<td @click="copy">{{session.seconds}}</td>
+				<td @click="copy">{{formatSeconds(session.seconds)}}</td>
 				<td @click="copy">{{session.comments}}</td>
 				<td>{{session.created_at}}</td>
 				<td>{{session.category_id}}</td>