fix(aihr): align supervisor scenario options

mobile-uni/src/pages/supervisor/assign/index.vue

@@ -45,9 +45,9 @@
         />
 
         <text class="field-label section-label">训练场景</text>
-        <view class="scenario-row">
+        <view v-if="scenarioOptions.length" class="scenario-row">
           <button
-            v-for="item in supervisorScenarioOptions"
+            v-for="item in scenarioOptions"
             :key="item.id"
             class="chip scenario-chip"
             :class="{ active: assignmentScenarioId === item.id }"
@@ -57,6 +57,7 @@
             {{ item.name }}
           </button>
         </view>
+        <text v-else class="muted block">暂无可派发的已启用场景</text>
 
         <text class="field-label section-label">指派原因</text>
         <textarea
@@ -65,7 +66,7 @@
           maxlength="180"
           placeholder="填写本次专项训练原因"
         />
-        <button class="primary-button submit-button" :disabled="assigning || historyLoading" @click="assignPractice">
+        <button class="primary-button submit-button" :disabled="assigning || historyLoading || !scenarioOptions.length" @click="assignPractice">
           {{ assigning ? '指派中' : '确认指派' }}
         </button>
       </view>
@@ -255,10 +256,8 @@ const loadScenarioOptions = async () => {
       }
       return;
     }
-    scenarioOptions.value = [...supervisorScenarioOptions];
-    if (!isScenarioId(assignmentScenarioId.value)) {
-      assignmentScenarioId.value = supervisorScenarioOptions[0].id;
-    }
+    scenarioOptions.value = [];
+    assignmentScenarioId.value = '';
   } catch {
     scenarioOptions.value = [...supervisorScenarioOptions];
     if (!isScenarioId(assignmentScenarioId.value)) {