feat: add Chinese and English UI language switch

handlers/settings.go

@@ -14,6 +14,15 @@ import (
 )
 
 // GetSettings 获取设置
+func GetLanguage(c *gin.Context) {
+	var setting models.Setting
+	lang := "en"
+	if err := database.DB.Where("key = ?", "language").First(&setting).Error; err == nil && setting.Value != "" {
+		lang = setting.Value
+	}
+	c.JSON(http.StatusOK, gin.H{"language": lang})
+}
+
 func GetSettings(c *gin.Context) {
 	var settings []models.Setting
 	database.DB.Find(&settings)