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/components/FightViewer.vue

@@ -468,7 +468,7 @@ async function _doReplay() {
         scene.startTalking('a')
       }
       // Ensure bubble stays visible for at least 400ms even if TTS resolves instantly
-      const minBubbleA = sleep(400).catch(() => {})
+      const minBubbleA = sleep(400).catch(err => console.warn('[FightViewer] sleep interrupted:', err))
       if (doTTS) {
         if (isCodeRound) await sfxModem()
         else await playAnswerNow(props.fight.botA!.name, round.botAResponse)
@@ -495,7 +495,7 @@ async function _doReplay() {
         scene.showSpeechBubble('b', round.botBResponse, 8)
         scene.startTalking('b')
       }
-      const minBubbleB = sleep(400).catch(() => {})
+      const minBubbleB = sleep(400).catch(err => console.warn('[FightViewer] sleep interrupted:', err))
       if (doTTS) {
         if (isCodeRound) await sfxModem()
         else await playAnswerNow(props.fight.botB!.name, round.botBResponse)

frontend/src/composables/useNostr.ts

@@ -126,7 +126,7 @@ if (!autoRestoreRan && pubkey.value && !bot.value && getToken() && !isTokenExpir
       bot.value = normalizeBotData(data.bot)
       store('bf_bot', bot.value)
     }
-  }).catch(() => {})
+  }).catch(err => console.warn('[Nostr] auto-restore failed:', err))
 } else if (!autoRestoreRan && pubkey.value && !getToken()) {
   // No JWT — clear stale pubkey from before the JWT migration
   autoRestoreRan = true
@@ -224,7 +224,7 @@ export function useNostr() {
         fetchNostrProfilePic(result.pubkey).then(pic => {
           profilePicUrl.value = pic
           store('bf_pic', pic)
-        }).catch(() => {})
+        }).catch(err => console.warn('[Nostr] relay profile fetch failed:', err))
       } else {
         freshlyGenerated = false
         profilePicUrl.value = null
@@ -285,7 +285,7 @@ export function useNostr() {
       fetchNostrProfilePic(result.pubkey).then(pic => {
         profilePicUrl.value = pic
         store('bf_pic', pic)
-      }).catch(() => {})
+      }).catch(err => console.warn('[Nostr] profile pic fetch failed:', err))
 
       return result
     } finally {

frontend/src/game/audio/context.ts

@@ -29,7 +29,7 @@ export function initCtx() {
 export function getCtx(): AudioContext {
   if (!ctx) initCtx()
   if (ctx!.state === 'suspended') {
-    ctx!.resume().catch(() => {})
+    ctx!.resume().catch(err => console.warn('[Audio] context resume failed:', err))
   }
   return ctx!
 }

frontend/src/game/tts.ts

@@ -239,7 +239,7 @@ const _inflight = new Map<string, Promise<AudioBuffer | null>>()
 
 function getAudioCtx(): AudioContext {
   if (!_audioCtx) _audioCtx = new AudioContext()
-  if (_audioCtx.state === 'suspended') _audioCtx.resume().catch(() => {})
+  if (_audioCtx.state === 'suspended') _audioCtx.resume().catch(err => console.warn('[TTS] AudioContext resume failed:', err))
   return _audioCtx
 }
 
@@ -505,7 +505,7 @@ export function kokoroSpeak(
   if (staticUrl || _workerReady) {
     _generateAndCache(text, profileName).then(buf => {
       if (buf) _playBuffer(buf, dest, volume)
-    }).catch(() => {})
+    }).catch(err => console.warn('[TTS] cache generation failed:', err))
     return true
   }
   return false
@@ -514,7 +514,7 @@ export function kokoroSpeak(
 /** Pre-generate audio in the worker so it's cached when needed. Fire-and-forget. */
 export function kokoroPrefetch(text: string, profileName: string): void {
   if (!_workerReady) return
-  _generateAndCache(text, profileName).catch(() => {})
+  _generateAndCache(text, profileName).catch(err => console.warn('[TTS] pre-cache generation failed:', err))
 }
 
 /** Await until prefetched audio is cached and ready (max 2s). Returns true if cached, false on timeout/failure. */

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"

frontend/src/pages/FightPage.vue

@@ -224,12 +224,12 @@ function wireSSE() {
     },
     onRoundEnd(data) {
       if (_fightEnding) return // Don't start new round animations after fight is ending
-      _roundEndPromise = handleRoundEnd(data).catch(() => {})
+      _roundEndPromise = handleRoundEnd(data).catch(err => console.warn('[FightPage] handleRoundEnd failed:', err))
     },
     onFightEnd(data) {
       if (_fightEnding) return // Deduplicate (only process first fight_end)
       _fightEnding = true
-      handleFightEnd(data).catch(() => {})
+      handleFightEnd(data).catch(err => console.warn('[FightPage] handleFightEnd failed:', err))
     },
   })
 }
@@ -517,7 +517,7 @@ onMounted(async () => {
 
   // Cache finished fights for offline replay
   if (status === 'finished' && fight.value) {
-    cacheFight(fight.value).catch(() => {})
+    cacheFight(fight.value).catch(err => console.warn('[FightPage] cacheFight failed:', err))
   }
 
   isLoading.value = false