fix(internal): 删除cateage部分，修复repo和service部分

internal/repo/repo.go

@@ -0,0 +1,18 @@
+package repo
+
+import (
+	"github.com/zhilv666/navsite/pkg/config"
+	"github.com/zhilv666/navsite/pkg/db"
+	"github.com/zhilv666/navsite/pkg/logger"
+	"gorm.io/gorm"
+)
+
+func DB() *gorm.DB {
+	_db := db.GetDB()
+	if _db == nil {
+		db.InitDB(config.GetConfig().Database, logger.GetLogger())
+		return db.GetDB()
+	}
+
+	return _db
+}