feat: enhance learn-number with dynamic SVG icons, multi-page support, and modular UI

pkg/learnnumber/tool.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"net/http"
 	"toolbox/pkg/base"
+	"toolbox/pkg/learnnumber/data"
 	"toolbox/pkg/learnnumber/logic"
 
 	"github.com/gin-gonic/gin"
@@ -18,14 +19,22 @@ func init() {
 func (t *learnNumberTool) ID() string          { return "learn-number" }
 func (t *learnNumberTool) Name() string        { return "幼儿数学助手" }
 func (t *learnNumberTool) Description() string { return "包含数图形、基础加减法等趣味数学练习" }
+func (t *learnNumberTool) Emoji() string       { return "🔢" }
 
 func (t *learnNumberTool) Init() error {
 	fmt.Println("Initializing Learn-Number tool...")
-	return nil
+	// 动态加载匿名对象
+	return data.LoadIcons("pkg/learnnumber/data/fruit.svg")
 }
 
 func (t *learnNumberTool) RegisterRoutes(r *gin.RouterGroup) {
 	r.POST("/counting", t.handleCounting)
+	r.GET("/categories", t.handleCategories)
+}
+
+func (t *learnNumberTool) handleCategories(c *gin.Context) {
+	// 返回分类信息供前端预览
+	c.JSON(http.StatusOK, data.IconCategories)
 }
 
 func (t *learnNumberTool) handleCounting(c *gin.Context) {
@@ -34,15 +43,10 @@ func (t *learnNumberTool) handleCounting(c *gin.Context) {
 		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
 		return
 	}
-
-	if req.TotalCount <= 0 { req.TotalCount = 20 }
-	if req.TotalCount > 30 { req.TotalCount = 30 }
-
 	pdfBytes, err := logic.GenerateCountingPDF(req)
 	if err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
-
 	c.Data(http.StatusOK, "application/pdf", pdfBytes)
 }