1、新增二板炸板情况统计；

2、更新项目结构；

internal/api/limit_board_handler.go

@@ -1,7 +1,10 @@
 package api
 
 import (
+	"errors"
 	"net/http"
+	"strconv"
+	"strings"
 
 	"github.com/gin-gonic/gin"
 	"level_go/internal/model"
@@ -48,6 +51,90 @@ func (h *LimitBoardHandler) GetOpenLowerGroups(c *gin.Context) {
 	c.JSON(http.StatusOK, resp)
 }
 
+func (h *LimitBoardHandler) GetBreakNextPerformance(c *gin.Context) {
+	req, err := parseLimitBreakNextPerformanceRequest(c, true)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	resp, err := h.Service.GetLimitBreakNextPerformance(req)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, resp)
+}
+
+func parseLimitBreakNextPerformanceRequest(c *gin.Context, includePagination bool) (model.LimitBreakNextPerformanceRequest, error) {
+	req := model.LimitBreakNextPerformanceRequest{
+		TradeStartDate: strings.TrimSpace(c.DefaultQuery("tradeStartDate", c.Query("start_date"))),
+		TradeEndDate:   strings.TrimSpace(c.DefaultQuery("tradeEndDate", c.Query("end_date"))),
+		Page:           1,
+		PageSize:       20,
+	}
+
+	if req.TradeStartDate == "" {
+		return req, errors.New("tradeStartDate 参数不能为空")
+	}
+	if req.TradeEndDate == "" {
+		return req, errors.New("tradeEndDate 参数不能为空")
+	}
+	if err := validateSecondProfitDateRange(req.TradeStartDate, req.TradeEndDate); err != nil {
+		return req, err
+	}
+
+	if includePagination {
+		pageText := strings.TrimSpace(c.DefaultQuery("page", "1"))
+		page, err := strconv.Atoi(pageText)
+		if err != nil || page <= 0 {
+			return req, errors.New("page 必须为正整数")
+		}
+		req.Page = page
+
+		pageSizeText := strings.TrimSpace(c.DefaultQuery("pageSize", "20"))
+		pageSize, err := strconv.Atoi(pageSizeText)
+		if err != nil || pageSize <= 0 {
+			return req, errors.New("pageSize 必须为正整数")
+		}
+		req.PageSize = pageSize
+	}
+
+	tOpenGainLt101, err := parseOptionalBoolQuery(c, "tOpenGainLt101", "tOpenLessThan101", "t_open_gain_lt_101")
+	if err != nil {
+		return req, errors.New("tOpenGainLt101 必须为布尔值")
+	}
+	req.TOpenGainLt101 = tOpenGainLt101
+
+	breakTimeBefore1100, err := parseOptionalBoolQuery(c, "breakTimeBefore1100", "tBreakTimeBefore1100", "break_time_before_1100")
+	if err != nil {
+		return req, errors.New("breakTimeBefore1100 必须为布尔值")
+	}
+	req.BreakTimeBefore1100 = breakTimeBefore1100
+
+	return req, nil
+}
+
+func parseOptionalBoolQuery(c *gin.Context, keys ...string) (*bool, error) {
+	for _, key := range keys {
+		valueText, exists := c.GetQuery(key)
+		if !exists {
+			continue
+		}
+		valueText = strings.TrimSpace(valueText)
+		if valueText == "" {
+			continue
+		}
+		value, err := strconv.ParseBool(valueText)
+		if err != nil {
+			return nil, err
+		}
+		return &value, nil
+	}
+	return nil, nil
+}
+
 func (h *LimitBoardHandler) GetOpenThresholdGroups(c *gin.Context) {
 	var req model.LimitBoardRequest
 	if err := c.ShouldBindQuery(&req); err != nil || req.TradeDate == "" {