refactor(data): 重构交易所适配器，修复 Kline 实体复合主键

- 废弃旧 adapter 体系 (base/binance/types.ts)，新增 base_rest/rest.ts
  基于 Binance 官方 SDK 实现 REST K 线拉取
- Kline 实体改为四列复合主键 (exchange/symbol/interval/time)，
  修复单列 time PK 导致的跨 symbol 写入冲突
- 新增 filterConsecutive()：K 线连续性过滤，首缺口截断策略
- 新增 service/kline.ts：批量 UPSERT K 线入库
- 新增 types/ 共享类型定义、example/ 示例、run/ 运行脚本

data/example/pair.ts

@@ -0,0 +1,77 @@
+import { logger } from "../utils/logger";
+import { AppDataSource } from "../db/data-source";
+import { Exchange } from "../db/entities/exchange.entity";
+import { TradingPair } from "../db/entities/trading-pair.entity";
+
+interface PairSeed {
+    symbol: string;
+    baseAsset: string;
+    quoteAsset: string;
+}
+
+const PAIRS: PairSeed[] = [
+    { symbol: "BTCUSDT", baseAsset: "BTC", quoteAsset: "USDT" },
+    { symbol: "ETHUSDT", baseAsset: "ETH", quoteAsset: "USDT" },
+];
+
+async function run(): Promise<void> {
+    logger.info("Seeding trading pairs...");
+
+    const exchangeRepo = AppDataSource.getRepository(Exchange);
+    const pairRepo = AppDataSource.getRepository(TradingPair);
+
+    // 1. 确保 binance 交易所存在
+    let exchange = await exchangeRepo.findOne({ where: { name: "binance" } });
+    if (!exchange) {
+        exchange = exchangeRepo.create({
+            name: "binance",
+            label: "Binance",
+            enabled: true,
+        });
+        await exchangeRepo.save(exchange);
+        logger.info("Created exchange: binance");
+    } else {
+        logger.info("Exchange already exists: binance");
+    }
+
+    // 2. 逐个插入交易对（跳过已存在的）
+    let created = 0;
+    let skipped = 0;
+
+    for (const seed of PAIRS) {
+        const existing = await pairRepo.findOne({
+            where: {
+                exchange: { id: exchange.id },
+                symbol: seed.symbol,
+            },
+        });
+
+        if (existing) {
+            logger.info({ symbol: seed.symbol }, "Trading pair already exists, skipping");
+            skipped++;
+            continue;
+        }
+
+        const pair = pairRepo.create({
+            exchange,
+            symbol: seed.symbol,
+            base_asset: seed.baseAsset,
+            quote_asset: seed.quoteAsset,
+            active: true,
+            kline_synthesis_enabled: true,
+        });
+
+        await pairRepo.save(pair);
+        created++;
+        logger.info({ symbol: seed.symbol, id: pair.id }, "Created trading pair");
+    }
+
+    logger.info({ created, skipped, total: PAIRS.length }, "Seeding complete");
+    await AppDataSource.destroy();
+    process.exit(0);
+}
+
+run().catch((err) => {
+    logger.error({ err }, "Seeding failed");
+    process.exit(1);
+});