feat: 从黄果 NET hgdjnet-server 9bfbafe 导入 HKDJ 官网后端

来源：hgdjnet-server 9bfbafe10d417deea959bd53117bc88a10e60a83
项目身份 HKDJ / JHA-216，独立官网仓库，Jenkins 守卫键 hkdjnet
测试目录 /server/hkdj_net，App/Web API 30331/30332

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

app/api/appinfoapi/appinfo.go

@@ -0,0 +1,48 @@
+package appinfoapi
+
+import (
+	"hkdj-web-server/app/api/proto"
+	"hkdj-web-server/app/service/appser"
+	"hkdj-web-server/app/service/configser"
+	"hkdj-web-server/pub/common"
+	"hkdj-web-server/pub/common/srvdef"
+
+	"github.com/gin-gonic/gin"
+)
+
+// QueryAppList 查询应用列表
+// @Tags 应用列表
+// @Summary 查询应用列表
+// @Description 返回应用分类列表，每个分类下含应用信息列表；categoryId=0 返回第一个分类
+// @Accept json
+// @Produce json
+// @Param categoryId query int false "当前分类ID，0表示默认第一个分类"
+// @Success 200 {object} proto.AppListResp "成功"
+// @Failure 400 {string} string "失败"
+// @Router /api/app/applist/list [get]
+func QueryAppList(c *gin.Context) {
+	var req struct {
+		CategoryId int64 `form:"categoryId"`
+	}
+	if err := c.ShouldBindQuery(&req); err != nil || req.CategoryId < 0 {
+		req.CategoryId = 0
+	}
+
+	categoryList, category, serr := appser.AppCategoryData(c, req.CategoryId)
+	if serr != nil {
+		common.ServerJSON(c, serr, "")
+		return
+	}
+
+	if categoryList == nil {
+		categoryList = make([]proto.AppCategoryInfo, 0)
+	}
+
+	common.ServerJSON(c, srvdef.Success, proto.AppListResp{
+		Path:         c.Request.URL.Path,
+		Config:       configser.GetConfigInfo(),
+		Advitise:     configser.GetAdvitise(),
+		CategoryList: categoryList,
+		Category:     category,
+	})
+}