update: lower message length limit

src/components/Board/BoardForm.vue

@@ -5,7 +5,7 @@ const emit = defineEmits(['new-message']);
 const props = defineProps(['locked']);
 
 const text = ref('');
-const maxLength = 1024;
+const maxLength = 200;
 
 const remainingCharacters = computed(() => {
   return maxLength - text.value.length;