chore(debug): add logs for realtime feed

ui/src/views/RealtimeFeedView.vue

@@ -1,10 +1,17 @@
 <script setup>
-import { onMounted } from 'vue'
+import { onMounted, watch } from 'vue'
 import { useRealtimeStore } from '@/stores/useRealtime'
 import RealtimeEventCard from '@/components/realtime/RealtimeEventCard.vue'
 
 const realtime = useRealtimeStore()
 
+watch(
+  () => realtime.events.length,
+  (newLen, oldLen) => {
+    console.log(`📈 Feed length changed: ${oldLen} -> ${newLen}`)
+  }
+)
+
 onMounted(() => {
   realtime.init()
 })