feat: 添加期现套利策略支持，更新相关配置和界面，增强 Aster 现货 API 客户端功能

src/ui/App.tsx

@@ -3,17 +3,19 @@ import { Box, Text, useInput } from "ink";
 import { TrendApp } from "./TrendApp";
 import { MakerApp } from "./MakerApp";
 import { OffsetMakerApp } from "./OffsetMakerApp";
+import { BasisApp } from "./BasisApp";
+import { isBasisStrategyEnabled } from "../config";
 import { loadCopyrightFragments, verifyCopyrightIntegrity } from "../utils/copyright";
 import { resolveExchangeId } from "../exchanges/create-adapter";
 
 interface StrategyOption {
-  id: "trend" | "maker" | "offset-maker";
+  id: "trend" | "maker" | "offset-maker" | "basis";
   label: string;
   description: string;
   component: React.ComponentType<{ onExit: () => void }>;
 }
 
-const STRATEGIES: StrategyOption[] = [
+const BASE_STRATEGIES: StrategyOption[] = [
   {
     id: "trend",
     label: "趋势跟随策略 (SMA30)",
@@ -42,7 +44,20 @@ export function App() {
   const copyright = useMemo(() => loadCopyrightFragments(), []);
   const integrityOk = useMemo(() => verifyCopyrightIntegrity(), []);
   const exchangeId = useMemo(() => resolveExchangeId(), []);
-  const strategies = useMemo(() => STRATEGIES, []);
+  const strategies = useMemo(() => {
+    if (!isBasisStrategyEnabled()) {
+      return BASE_STRATEGIES;
+    }
+    return [
+      ...BASE_STRATEGIES,
+      {
+        id: "basis" as const,
+        label: "期现套利策略",
+        description: "监控期货与现货盘口差价，辅助发现套利机会",
+        component: BasisApp,
+      },
+    ];
+  }, []);
 
   useInput(
     (input, key) => {

src/ui/BasisApp.tsx

@@ -0,0 +1,134 @@
+import React, { useEffect, useMemo, useRef, useState } from "react";
+import { Box, Text, useInput } from "ink";
+import { basisConfig } from "../config";
+import { getExchangeDisplayName, resolveExchangeId } from "../exchanges/create-adapter";
+import { buildAdapterFromEnv } from "../exchanges/resolve-from-env";
+import { BasisArbEngine, type BasisArbSnapshot } from "../strategy/basis-arb-engine";
+import { formatNumber } from "../utils/format";
+
+interface BasisAppProps {
+  onExit: () => void;
+}
+
+const inputSupported = Boolean(process.stdin && (process.stdin as any).isTTY);
+
+export function BasisApp({ onExit }: BasisAppProps) {
+  const [snapshot, setSnapshot] = useState<BasisArbSnapshot | null>(null);
+  const [error, setError] = useState<Error | null>(null);
+  const engineRef = useRef<BasisArbEngine | null>(null);
+  const exchangeId = useMemo(() => resolveExchangeId(), []);
+  const exchangeName = useMemo(() => getExchangeDisplayName(exchangeId), [exchangeId]);
+
+  useInput(
+    (input, key) => {
+      if (key.escape) {
+        engineRef.current?.stop();
+        onExit();
+      }
+    },
+    { isActive: inputSupported }
+  );
+
+  useEffect(() => {
+    if (exchangeId !== "aster") {
+      setError(new Error("期现套利策略目前仅支持 Aster 交易所。请设置 EXCHANGE=aster 后重试。"));
+      return;
+    }
+    try {
+      const adapter = buildAdapterFromEnv({ exchangeId, symbol: basisConfig.futuresSymbol });
+      const engine = new BasisArbEngine(basisConfig, adapter);
+      engineRef.current = engine;
+      setSnapshot(engine.getSnapshot());
+      const handler = (next: BasisArbSnapshot) => {
+        setSnapshot({ ...next, tradeLog: [...next.tradeLog] });
+      };
+      engine.on("update", handler);
+      engine.start();
+      return () => {
+        engine.off("update", handler);
+        engine.stop();
+      };
+    } catch (err) {
+      console.error(err);
+      setError(err instanceof Error ? err : new Error(String(err)));
+    }
+  }, [exchangeId]);
+
+  if (error) {
+    return (
+      <Box flexDirection="column" padding={1}>
+        <Text color="red">无法启动期现套利策略: {error.message}</Text>
+        <Text color="gray">按 Esc 返回菜单。</Text>
+      </Box>
+    );
+  }
+
+  if (!snapshot) {
+    return (
+      <Box padding={1}>
+        <Text>正在初始化期现套利监控…</Text>
+      </Box>
+    );
+  }
+
+  const futuresBid = formatNumber(snapshot.futuresBid, 4);
+  const futuresAsk = formatNumber(snapshot.futuresAsk, 4);
+  const spotBid = formatNumber(snapshot.spotBid, 4);
+  const spotAsk = formatNumber(snapshot.spotAsk, 4);
+  const spread = formatNumber(snapshot.spread, 4);
+  const spreadBps = formatNumber(snapshot.spreadBps, 2);
+  const netSpread = formatNumber(snapshot.netSpread, 4);
+  const netSpreadBps = formatNumber(snapshot.netSpreadBps, 2);
+  const lastUpdated = snapshot.lastUpdated ? new Date(snapshot.lastUpdated).toLocaleTimeString() : "-";
+  const futuresUpdated = snapshot.futuresLastUpdate ? new Date(snapshot.futuresLastUpdate).toLocaleTimeString() : "-";
+  const spotUpdated = snapshot.spotLastUpdate ? new Date(snapshot.spotLastUpdate).toLocaleTimeString() : "-";
+  const feedStatus = snapshot.feedStatus;
+  const lastLogs = snapshot.tradeLog.slice(-5);
+
+  return (
+    <Box flexDirection="column" paddingX={1}>
+      <Box flexDirection="column" marginBottom={1}>
+        <Text color="cyanBright">Basis Arbitrage Dashboard</Text>
+        <Text>
+          交易所: {exchangeName} ｜ 期货合约: {snapshot.futuresSymbol} ｜ 现货交易对: {snapshot.spotSymbol}
+        </Text>
+        <Text color="gray">按 Esc 返回策略选择 ｜ 数据状态: 期货({feedStatus.futures ? "OK" : "--"}) 现货({feedStatus.spot ? "OK" : "--"})</Text>
+        <Text color="gray">最近更新时间: {lastUpdated}</Text>
+      </Box>
+
+      <Box flexDirection="row" marginBottom={1}>
+        <Box flexDirection="column" marginRight={4}>
+          <Text color="greenBright">期货盘口</Text>
+          <Text>买一: {futuresBid} ｜ 卖一: {futuresAsk}</Text>
+          <Text color="gray">更新时间: {futuresUpdated}</Text>
+        </Box>
+        <Box flexDirection="column">
+          <Text color="greenBright">现货盘口</Text>
+          <Text>买一: {spotBid} ｜ 卖一: {spotAsk}</Text>
+          <Text color="gray">更新时间: {spotUpdated}</Text>
+        </Box>
+      </Box>
+
+      <Box flexDirection="column" marginBottom={1}>
+        <Text color={snapshot.opportunity ? "greenBright" : "redBright"}>套利差价（卖期货 / 买现货）</Text>
+        <Text color={snapshot.opportunity ? "green" : undefined}>毛价差: {spread} USDT ｜ {spreadBps} bp</Text>
+        <Text color={snapshot.opportunity ? "green" : "red"}>
+          扣除 taker 手续费 ({(basisConfig.takerFeeRate * 100).toFixed(4)}% × 双边): {netSpread} USDT ｜ {netSpreadBps} bp
+        </Text>
+      </Box>
+
+      <Box flexDirection="column">
+        <Text color="yellow">最近事件</Text>
+        {lastLogs.length ? (
+          lastLogs.map((entry, index) => (
+            <Text key={`${entry.time}-${index}`}>
+              [{entry.time}] [{entry.type}] {entry.detail}
+            </Text>
+          ))
+        ) : (
+          <Text color="gray">暂无日志</Text>
+        )}
+      </Box>
+    </Box>
+  );
+}