优化: 共用一次 store.GetAll() 快照，消除每 tick 两次 map 分配

main.go

@@ -179,12 +179,12 @@ func main() {
 			t1 := time.Now()
 
 			// Scan for arbitrage entries using maker fees (limit orders)
-			makerOpps := ScanBGHL(store)
+			snap := store.GetAll()
+			makerOpps := ScanBGHL(snap)
 			dashboard.UpdateScan(makerOpps)
 			t2 := time.Now()
 
 			// Track spread window durations (how long each opportunity stays alive)
-			snap := store.GetAll()
 			spreadTracker.Tick(snap, cfg.TradeThreshold)
 
 			for _, opp := range makerOpps {

scanner.go

@@ -208,12 +208,11 @@ func netProfit(buyPrice, sellPrice, buyFee, sellFee float64) float64 {
 
 // ScanBGHL scans coins for arbitrage ONLY between Bitget and HyperLiquid (P3-1).
 // Returns both directions (BG->HL and HL->BG) sorted by net profit descending.
-func ScanBGHL(store *PriceStore) []*ArbOpportunity {
+func ScanBGHL(snap map[string]map[string]float64) []*ArbOpportunity {
-	snapshot := store.GetAll()
 	var results []*ArbOpportunity
 
 	for _, coin := range TrackedCoins {
-		exMap := snapshot[coin.Name]
+		exMap := snap[coin.Name]
 		if exMap == nil {
 			continue
 		}