Fix Bug #476: 紧急程度移入el-form作为正式表单项，修正字段排列顺序

根因：紧急程度渲染在el-form外的独立urgency-bar中，不是正式表单项，
不随表单校验和数据流走；第一行字段布局只有发往科室和期望检查时间，
紧急程度未放在发往科室之后。

修复：将紧急程度从独立div移入el-form第一行，位于发往科室和期望检查时间之间；
同步移除urgency-bar废弃CSS；修正date picker函数名disabledFutureDate为disabledPastDate。

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

openhis-ui-vue3/src/views/inpatientDoctor/home/components/order/applicationForm/medicalExaminations.vue

@@ -7,20 +7,6 @@
   <div class="medicalExaminations-container">
     <!-- 主体内容 -->
     <div class="form-body">
-      <!-- 右上角：紧急程度 -->
-      <div class="urgency-bar">
-        <span class="urgency-bar-label">紧急程度：</span>
-        <el-radio-group v-model="form.urgencyLevel" @change="handleUrgencyChange" size="small">
-          <el-radio-button label="routine">普通</el-radio-button>
-          <el-radio-button label="emergency">急诊</el-radio-button>
-        </el-radio-group>
-        <transition name="el-fade-in-linear">
-          <span v-if="form.urgencyLevel === 'emergency'" class="emergency-tip-inline">
-            <el-icon><WarningFilled /></el-icon>
-            绿色通道
-          </span>
-        </transition>
-      </div>
       <!-- 选择检查项目 -->
       <div class="section-card">
         <div class="transfer-wrapper">
@@ -52,7 +38,21 @@
               />
             </el-form-item>
           </el-col>
-          <el-col :span="12">
+          <el-col :span="4">
+            <el-form-item label="紧急程度">
+              <el-radio-group v-model="form.urgencyLevel" @change="handleUrgencyChange" size="small">
+                <el-radio-button label="routine">普通</el-radio-button>
+                <el-radio-button label="emergency">急诊</el-radio-button>
+              </el-radio-group>
+              <transition name="el-fade-in-linear">
+                <span v-if="form.urgencyLevel === 'emergency'" class="emergency-tip-inline">
+                  <el-icon><WarningFilled /></el-icon>
+                  绿色通道
+                </span>
+              </transition>
+            </el-form-item>
+          </el-col>
+          <el-col :span="8">
             <el-form-item label="期望检查时间">
               <el-date-picker
                 v-model="form.expectedExaminationTime"
@@ -61,7 +61,7 @@
                 style="width: 100%"
                 value-format="YYYY-MM-DD HH:mm:ss"
                 format="YYYY-MM-DD HH:mm"
-                :disabled-date="disabledFutureDate"
+                :disabled-date="disabledPastDate"
                 :default-value="new Date()"
               />
             </el-form-item>
@@ -347,8 +347,8 @@ const rules = reactive({
   ],
 });
 
-// 禁用过去的时间
-const disabledFutureDate = (time) => {
+// 禁用过去的日期（允许选择今天及以后）
+const disabledPastDate = (time) => {
   return time.getTime() < Date.now() - 8.64e7;
 };
 
@@ -624,23 +624,6 @@ $bg-color: #f5f7fa;
     }
   }
 
-  // 紧急程度栏 - 右上角
-  .urgency-bar {
-    display: flex;
-    align-items: center;
-    justify-content: flex-end;
-    gap: 8px;
-    padding: 4px 0;
-    margin-bottom: 4px;
-  }
-
-  .urgency-bar-label {
-    font-size: 13px;
-    font-weight: 500;
-    color: $text-regular;
-    white-space: nowrap;
-  }
-
   // 卡片通用样式 - 紧凑
   .section-card {
     background: #fff;