Batch authoritative snapshots and bound rejected retreat fallback

core/service.ts

@@ -70,6 +70,16 @@ function observedHardcoreDeath(s:State,b:Bot,observation:Observation){
  return true;
 }
 
+// Apply one transport batch atomically; one large state write instead of one per bot.
+export async function applyAuthoritativeAleSnapshots(store:StateStore,payloads:Record<string,unknown>[]){
+ const initial=await store.load(),revision=initial.revision;
+ let staged=structuredClone(initial),dirty=false;
+ const batchStore:StateStore={load:async()=>staged,save:async(next)=>{staged=next;dirty=true;}};
+ for(const payload of payloads)await applyAuthoritativeAleEvent(batchStore,'player.snapshot',payload);
+ if(dirty)await store.save(staged,revision);
+ return {ok:true,count:payloads.length};
+}
+
 export async function applyAuthoritativeAleEvent(store:StateStore,kind:string,payload:Record<string,unknown>){
  let s=await store.load();
  const revision=s.revision;