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/fix_order_data.go

@@ -0,0 +1,141 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"nofx/store"
+	"os"
+	"path/filepath"
+	"time"
+)
+
+func main() {
+	var dbPath string
+	var dryRun bool
+
+	flag.StringVar(&dbPath, "db", "./data/data.db", "数据库文件路径")
+	flag.BoolVar(&dryRun, "dry-run", false, "只检查不修复（预览模式）")
+	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()
+
+	fmt.Println("\n🔍 检查需要修复的订单...")
+
+	// 1. 修复缺少 filled_at 的 FILLED 订单（使用 updated_at 或 created_at）
+	var needFixFilledAt int
+	err = db.QueryRow(`
+		SELECT COUNT(*)
+		FROM trader_orders
+		WHERE status = 'FILLED' AND (filled_at IS NULL OR filled_at = '')
+	`).Scan(&needFixFilledAt)
+	if err != nil {
+		log.Fatalf("❌ 查询失败: %v", err)
+	}
+
+	fmt.Printf("   📋 缺少成交时间的订单: %d 条\n", needFixFilledAt)
+
+	// 2. 修复 avg_fill_price = 0 的 FILLED 订单（使用 price 字段）
+	var needFixAvgPrice int
+	err = db.QueryRow(`
+		SELECT COUNT(*)
+		FROM trader_orders
+		WHERE status = 'FILLED' AND (avg_fill_price = 0 OR avg_fill_price IS NULL) AND price > 0
+	`).Scan(&needFixAvgPrice)
+	if err != nil {
+		log.Fatalf("❌ 查询失败: %v", err)
+	}
+
+	fmt.Printf("   💰 成交价为0的订单: %d 条\n", needFixAvgPrice)
+
+	if needFixFilledAt == 0 && needFixAvgPrice == 0 {
+		fmt.Println("\n✅ 没有需要修复的订单！")
+		return
+	}
+
+	if dryRun {
+		fmt.Println("\n⚠️  预览模式（--dry-run），不会修改数据")
+		fmt.Println("   运行 'go run scripts/fix_order_data.go' 来执行实际修复")
+		return
+	}
+
+	fmt.Println("\n🔧 开始修复...")
+
+	// 修复缺少 filled_at 的订单
+	if needFixFilledAt > 0 {
+		result, err := db.Exec(`
+			UPDATE trader_orders
+			SET filled_at = COALESCE(updated_at, created_at)
+			WHERE status = 'FILLED' AND (filled_at IS NULL OR filled_at = '')
+		`)
+		if err != nil {
+			log.Fatalf("❌ 修复成交时间失败: %v", err)
+		}
+		rows, _ := result.RowsAffected()
+		fmt.Printf("   ✅ 修复了 %d 条订单的成交时间\n", rows)
+	}
+
+	// 修复 avg_fill_price = 0 的订单
+	if needFixAvgPrice > 0 {
+		result, err := db.Exec(`
+			UPDATE trader_orders
+			SET avg_fill_price = price,
+				filled_quantity = quantity
+			WHERE status = 'FILLED'
+			  AND (avg_fill_price = 0 OR avg_fill_price IS NULL)
+			  AND price > 0
+		`)
+		if err != nil {
+			log.Fatalf("❌ 修复成交价失败: %v", err)
+		}
+		rows, _ := result.RowsAffected()
+		fmt.Printf("   ✅ 修复了 %d 条订单的成交价\n", rows)
+	}
+
+	// 验证修复结果
+	fmt.Println("\n🔍 验证修复结果...")
+	time.Sleep(100 * time.Millisecond)
+
+	var stillMissingFilledAt int
+	db.QueryRow(`
+		SELECT COUNT(*)
+		FROM trader_orders
+		WHERE status = 'FILLED' AND (filled_at IS NULL OR filled_at = '')
+	`).Scan(&stillMissingFilledAt)
+
+	var stillMissingAvgPrice int
+	db.QueryRow(`
+		SELECT COUNT(*)
+		FROM trader_orders
+		WHERE status = 'FILLED' AND (avg_fill_price = 0 OR avg_fill_price IS NULL)
+	`).Scan(&stillMissingAvgPrice)
+
+	fmt.Printf("   📋 仍缺少成交时间: %d 条\n", stillMissingFilledAt)
+	fmt.Printf("   💰 仍缺少成交价: %d 条\n", stillMissingAvgPrice)
+
+	if stillMissingFilledAt == 0 && stillMissingAvgPrice == 0 {
+		fmt.Println("\n✅ 修复完成！所有订单数据已完整")
+		fmt.Println("\n💡 现在刷新图表页面，应该能看到 B/S 标记了")
+	} else {
+		fmt.Println("\n⚠️  仍有部分订单无法修复，可能需要手动检查")
+	}
+}