fix: replace all silent .catch(() => {}) with console.warn (BUG-F2)

13 silent catch handlers replaced with descriptive console.warn logging
across 6 frontend files. No silent error swallowing remains.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/pages/BotProfilePage.vue

@@ -285,7 +285,7 @@ onMounted(async () => {
   if (stats.value?.ownerPubkey) {
     fetchNostrProfile(stats.value.ownerPubkey).then(p => {
       nostrProfile.value = p
-    }).catch(() => {})
+    }).catch(err => console.warn('[BotProfile] webhook test failed:', err))
   }
 
   // Poll queue for "choose your fight"