feat: 增加示波器探测参数显示，增加旋转编码器按下的功能

src/views/Exam/ExamEditModal.vue

@@ -182,7 +182,7 @@
               <!-- MD文档 -->
               <div class="space-y-2">
                 <label class="text-sm font-medium text-base-content"
-                  >MD文档 (必需)</label
+                  >MD文档 (可选)</label
                 >
                 <div
                   class="border-2 border-dashed border-base-300 rounded-lg p-6 text-center cursor-pointer hover:border-primary hover:bg-primary/5 transition-colors aspect-square flex items-center justify-center"
@@ -468,7 +468,7 @@ const canCreateExam = computed(() => {
     editExamInfo.value.id.trim() !== "" &&
     editExamInfo.value.name.trim() !== "" &&
     editExamInfo.value.description.trim() !== "" &&
-    (uploadFiles.value.mdFile !== null || mode.value === "edit")
+    (mode.value === "edit")
   );
 });
 
@@ -605,11 +605,6 @@ const submitCreateExam = async () => {
     return;
   }
 
-  if (!uploadFiles.value.mdFile) {
-    alert.error("请上传MD文档");
-    return;
-  }
-
   isUpdating.value = true;
 
   try {