fix device decrypt flow and delete_account response stability

internal/middleware/authMiddleware.go

@@ -41,10 +41,7 @@ func AuthMiddleware(svc *svc.ServiceContext) func(c *gin.Context) {
 			return
 		}
 
-		loginType := ""
-		if claims["CtxLoginType"] != nil {
-			loginType = claims["CtxLoginType"].(string)
-		}
+		loginType := parseLoginType(claims)
 		if claims["identifier"] != nil {
 			ctx = context.WithValue(ctx, constant.CtxKeyIdentifier, claims["identifier"].(string))
 		}
@@ -93,3 +90,17 @@ func AuthMiddleware(svc *svc.ServiceContext) func(c *gin.Context) {
 		c.Next()
 	}
 }
+
+func parseLoginType(claims map[string]interface{}) string {
+	if raw, exists := claims["CtxLoginType"]; exists {
+		if loginType, ok := raw.(string); ok && loginType != "" {
+			return loginType
+		}
+	}
+	if raw, exists := claims["LoginType"]; exists {
+		if loginType, ok := raw.(string); ok && loginType != "" {
+			return loginType
+		}
+	}
+	return ""
+}