another fix for human choices

frontend/src/composables/useFightPolling.ts

@@ -42,6 +42,7 @@ export function useFightPolling(fightId: Ref<string>) {
   async function loadFight(): Promise<string | null> {
     try {
       const res = await fetch(`/api/fights/${fightId.value}`)
+      if (res.status === 429) return null // Rate limited, skip this poll
       if (res.ok) {
         const data = await res.json()
         liveRounds.value = data.rounds?.length || 0

frontend/src/composables/useHumanChallenge.ts

@@ -97,11 +97,19 @@ export function useHumanChallenge(
     }
   }
 
+  let pollBackoff = 0
+
   async function pollForChallenge() {
     if (!myBotId.value) return
     try {
       const res = await fetch(`/api/fights/${fightId.value}/challenge/${myBotId.value}`)
+      if (res.status === 429) {
+        // Back off on rate limit — skip next few polls
+        pollBackoff = Math.min(pollBackoff + 2, 8)
+        return
+      }
       if (!res.ok) return
+      pollBackoff = Math.max(0, pollBackoff - 1) // Recover gradually
       const data = await res.json()
 
       if (data.pending) {
@@ -130,8 +138,12 @@ export function useHumanChallenge(
 
   function startHumanPolling() {
     if (!myBotId.value) return
+    pollBackoff = 0
     void pollForChallenge()
-    humanPollHandle = setInterval(() => { void pollForChallenge() }, 400)
+    humanPollHandle = setInterval(() => {
+      if (pollBackoff > 0) { pollBackoff--; return }
+      void pollForChallenge()
+    }, 800)
   }
 
   function stopHumanPolling() {