实例表单:默认 2C12G、去免费文案、配额按 AD 联动

src/components/instance/CreateInstanceModal.vue

@@ -56,12 +56,13 @@ async function submit() {
     // 后端 errors / instances 为空时序列化为 null，判空防炸
     const ok = result.instances?.length ?? 0
     const failed = result.errors?.length ?? 0
-    if (failed) message.warning(`${ok} 台创建成功，${failed} 台失败：${result.errors![0]}`)
+    if (failed) message.warning(`${ok} 台创建成功，${failed} 台失败`, result.errors!.join('\n'))
     else message.success(`已创建 ${ok} 台实例`)
     emit('update:show', false)
     emit('created')
   } catch (e) {
-    message.error(e instanceof Error ? e.message : '创建失败')
+    // 逐台错误(可能多行)收进「展开详情」,标题保持简短
+    message.error('创建实例失败', e instanceof Error && e.message ? e.message : undefined)
   } finally {
     submitting.value = false
   }
@@ -90,17 +91,18 @@ async function submit() {
     <InstanceSpecForm
       ref="specForm"
       sectioned
+      auto-pick-ad
       :cfg-id="cfgId"
       :region="region"
       :compartment-id="compartmentId"
     />
     <div
-      class="mt-3 flex flex-wrap items-center justify-between gap-2 rounded-lg border border-line-soft bg-wash px-3 py-2 text-xs leading-relaxed text-ink-3"
+      v-if="specForm?.summary"
+      class="mt-3 rounded-lg border border-line-soft bg-wash px-3 py-2 text-xs leading-relaxed"
     >
-      <span v-if="specForm?.summary" class="font-medium text-ink-2">
+      <span class="font-medium text-ink-2">
         预估规格:{{ form.count }} 台 · {{ specForm.summary }}
       </span>
-      <span>容量不足（Out of host capacity）时可改用抢机任务反复尝试</span>
     </div>
   </FormModal>
 </template>