feat: 重构为三所价差异动监控系统

删除 HyperLiquid + 全部交易功能，构建自适应 surge 检测器。
- 新增 surge_detector.go: 每币独立滚动窗口基线，检测三所价差异常飙升
- 新增 SpreadCard/SurgeCard 前端组件
- 保留 momentum/trend/cumulative/trend_filter 扫描功能
- 更新文档和配置以反映新系统

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

momentum.go

@@ -37,10 +37,6 @@ type MomentumEntry struct {
 	BG5s      float64 `json:"bg_5s"`
 	BG15s     float64 `json:"bg_15s"`
 	BG60s     float64 `json:"bg_60s"`
-	HL1s      float64 `json:"hl_1s"`
-	HL5s      float64 `json:"hl_5s"`
-	HL15s     float64 `json:"hl_15s"`
-	HL60s     float64 `json:"hl_60s"`
 	BN1s      float64 `json:"bn_1s"`
 	BN5s      float64 `json:"bn_5s"`
 	BN15s     float64 `json:"bn_15s"`
@@ -95,10 +91,9 @@ func (mt *MomentumTracker) Snapshot(thresholdPct float64) []MomentumEntry {
 	var result []MomentumEntry
 	for coin, exMap := range mt.buffers {
 		bgBuf, hasBG := exMap[ExBitget]
-		hlBuf, hasHL := exMap[ExHyperLiquid]
 		bnBuf, hasBN := exMap[ExBinance]
 		okBuf, hasOK := exMap[ExOKX]
-		if !hasBG && !hasHL && !hasBN && !hasOK {
+		if !hasBG && !hasBN && !hasOK {
 			continue
 		}
 
@@ -113,14 +108,6 @@ func (mt *MomentumTracker) Snapshot(thresholdPct float64) []MomentumEntry {
 			entry.BG60s = changes[3]
 			allChanges = append(allChanges, changes[:]...)
 		}
-		if hasHL {
-			changes := calcWindows(hlBuf)
-			entry.HL1s = changes[0]
-			entry.HL5s = changes[1]
-			entry.HL15s = changes[2]
-			entry.HL60s = changes[3]
-			allChanges = append(allChanges, changes[:]...)
-		}
 		if hasBN {
 			changes := calcWindows(bnBuf)
 			entry.BN1s = changes[0]