feat: migrate to CoinAnk API and improve chart UI

- Chart improvements: professional styling, popular symbols quick selection, simplified B/S legend
- Data source migration: use CoinAnk API exclusively for all kline data
- Code cleanup: remove Binance WebSocket cache and related code (websocket_client.go, combined_streams.go, monitor.go)
- Log optimization: reduce hook spam, suppress 404 errors, increase P&L diff threshold
- Lighter integration: add order sync functionality, fix market order precision
- Remove ticker merge logic for simplicity

scripts/clear_orders.go

@@ -0,0 +1,111 @@
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"log"
+	"nofx/store"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+func main() {
+	var dbPath string
+	var force bool
+
+	flag.StringVar(&dbPath, "db", "./data/data.db", "数据库文件路径")
+	flag.BoolVar(&force, "force", false, "跳过确认直接删除")
+	flag.Parse()
+
+	// 确保数据库文件存在
+	absPath, err := filepath.Abs(dbPath)
+	if err != nil {
+		log.Fatalf("❌ 无效的数据库路径: %v", err)
+	}
+
+	if _, err := os.Stat(absPath); os.IsNotExist(err) {
+		log.Fatalf("❌ 数据库文件不存在: %s", absPath)
+	}
+
+	fmt.Printf("📂 数据库路径: %s\n", absPath)
+
+	// 打开数据库
+	s, err := store.New(absPath)
+	if err != nil {
+		log.Fatalf("❌ 无法打开数据库: %v", err)
+	}
+	defer s.Close()
+
+	db := s.DB()
+
+	// 统计当前数据
+	var orderCount, fillCount int
+	db.QueryRow(`SELECT COUNT(*) FROM trader_orders`).Scan(&orderCount)
+	db.QueryRow(`SELECT COUNT(*) FROM trader_fills`).Scan(&fillCount)
+
+	fmt.Printf("\n📊 当前数据统计:\n")
+	fmt.Printf("   trader_orders: %d 条记录\n", orderCount)
+	fmt.Printf("   trader_fills:  %d 条记录\n", fillCount)
+
+	if orderCount == 0 && fillCount == 0 {
+		fmt.Println("\n✅ 表已经是空的，无需清空")
+		return
+	}
+
+	// 确认删除
+	if !force {
+		fmt.Println("\n⚠️  警告: 此操作将删除所有订单和成交记录，无法恢复！")
+		fmt.Print("\n确认删除？请输入 'yes' 继续: ")
+
+		reader := bufio.NewReader(os.Stdin)
+		input, _ := reader.ReadString('\n')
+		input = strings.TrimSpace(input)
+
+		if input != "yes" {
+			fmt.Println("\n❌ 操作已取消")
+			return
+		}
+	}
+
+	fmt.Println("\n🗑️  开始清空表...")
+
+	// 清空 trader_fills 表（先删除，因为有外键约束）
+	result, err := db.Exec(`DELETE FROM trader_fills`)
+	if err != nil {
+		log.Fatalf("❌ 清空 trader_fills 失败: %v", err)
+	}
+	fillsDeleted, _ := result.RowsAffected()
+	fmt.Printf("   ✅ 删除了 %d 条成交记录\n", fillsDeleted)
+
+	// 清空 trader_orders 表
+	result, err = db.Exec(`DELETE FROM trader_orders`)
+	if err != nil {
+		log.Fatalf("❌ 清空 trader_orders 失败: %v", err)
+	}
+	ordersDeleted, _ := result.RowsAffected()
+	fmt.Printf("   ✅ 删除了 %d 条订单记录\n", ordersDeleted)
+
+	// 重置自增ID（可选，让ID从1重新开始）
+	_, err = db.Exec(`DELETE FROM sqlite_sequence WHERE name IN ('trader_orders', 'trader_fills')`)
+	if err == nil {
+		fmt.Println("   ✅ 重置了自增ID计数器")
+	}
+
+	// 验证清空结果
+	db.QueryRow(`SELECT COUNT(*) FROM trader_orders`).Scan(&orderCount)
+	db.QueryRow(`SELECT COUNT(*) FROM trader_fills`).Scan(&fillCount)
+
+	fmt.Printf("\n🔍 验证结果:\n")
+	fmt.Printf("   trader_orders: %d 条记录\n", orderCount)
+	fmt.Printf("   trader_fills:  %d 条记录\n", fillCount)
+
+	if orderCount == 0 && fillCount == 0 {
+		fmt.Println("\n✅ 表已成功清空！")
+		fmt.Println("\n💡 现在可以重新运行 trader 进行测试")
+		fmt.Println("   新的订单将从 ID=1 开始记录")
+	} else {
+		fmt.Println("\n⚠️  清空未完成，请检查数据库")
+	}
+}