feat(listing): 发布新增「是否解锁德穆兰」必填项，首页优先替换全英雄展示

frontend/src/features/seller/views/MobileSellerListingCreateView.vue

@@ -123,6 +123,7 @@ function selectRadio<T extends string>(value: T, setter: (value: T) => void) {
 
 const canChangeGameNameOptions = ['是', '否']
 const allHeroOptions = ['是', '否']
+const demulanUnlockOptions = ['是', '否']
 const nextSeasonPassOptions = ['购买', '不购买']
 const earlyMorningResponseOptions = ['是', '否']
 
@@ -443,6 +444,23 @@ const screenshotGuides: Record<string, string> = {
           </template>
         </van-field>
 
+        <van-field label="是否解锁德穆兰" required class="publish-field">
+          <template #input>
+            <div class="radio-group">
+              <button
+                v-for="opt in demulanUnlockOptions"
+                :key="opt"
+                type="button"
+                class="radio-btn"
+                :class="{ active: form.unlock_demulan === opt }"
+                @click="selectRadio(opt, value => (form.unlock_demulan = value))"
+              >
+                {{ opt }}
+              </button>
+            </div>
+          </template>
+        </van-field>
+
         <van-field
           v-if="nextSeasonPassEnabled"
           label="下赛季是否购买通行证"