feat(admin, miniapp): 优化数据库迁移逻辑与小程序图片资源处理

- 为后端Admin新增migration_compat工具，支持离线迁移时的基线资源检查，重构全部alembic迁移脚本适配离线模式，避免重复创建已存在的数据库表和字段
- 完善初始数据库迁移脚本，添加默认部门种子数据，新增ConciergeAdvisor详情字段从JSON到JSONB的类型转换迁移
- 小程序端新增图片资源解析工具resolveNetworkImage，实现本地静态资源到CDN的自动映射，添加图片加载容错降级机制
- 完善HeroSlide类型定义，新增actionLabel字段，优化首页轮播组件的文本渲染与错误处理逻辑
- 新增对应测试用例验证迁移路径正确性与前端数据处理逻辑
- 新增临时 brainstorm UI对比草稿与开发临时状态文件

WonderQ-MiniAPP/src/pages/home/components/HomeHeroCarousel.vue

@@ -8,19 +8,40 @@
       :current="heroIndex"
       @change="onSlideChange"
     >
-      <swiper-item v-for="slide in slides" :key="slide.id || slide.image">
+      <swiper-item v-for="(slide, index) in props.slides" :key="slide.id || slide.image">
         <view
           class="relative m-0 h-full w-full overflow-hidden rounded-none p-0 text-left"
           @click="$emit('select', slide.title)"
         >
-          <image class="absolute inset-0 h-full w-full" :src="slide.image" mode="aspectFill" />
+          <image
+            class="absolute inset-0 h-full w-full"
+            :src="getSlideImage(slide, index)"
+            mode="aspectFill"
+            @error="onImageError(slide, index)"
+          />
+          <view class="hero-scrim absolute inset-0 flex items-end px-6 pb-[68px]">
+            <view class="min-w-0 text-white">
+              <text v-if="slide.kicker" class="block text-[12px] font-medium leading-5 tracking-[0.12em] text-white/80">
+                {{ slide.kicker }}
+              </text>
+              <text v-if="slide.title" class="mt-1 block text-[25px] font-semibold leading-8 tracking-[0.04em]">
+                {{ slide.title }}
+              </text>
+              <text
+                v-if="slide.actionLabel || slide.action"
+                class="mt-3 inline-flex rounded-[8px] border border-white/55 px-3 py-1 text-[12px] leading-5 text-white/95"
+              >
+                {{ slide.actionLabel || slide.action }}
+              </text>
+            </view>
+          </view>
         </view>
       </swiper-item>
     </swiper>
 
     <view class="absolute bottom-8 left-0 right-0 flex justify-center gap-2">
       <text
-        v-for="(_, index) in slides"
+        v-for="(_, index) in props.slides"
         :key="index"
         class="h-1.5 rounded-full transition-all"
         :class="heroIndex === index ? 'w-6 bg-white' : 'w-1.5 bg-white/50'"
@@ -31,17 +52,43 @@
 
 <script setup lang="ts">
 import { ref } from "vue";
+import { fallbackData } from "@/lib/data";
+import { resolveNetworkImage } from "@/content";
 import type { HeroSlide } from "@/lib/types";
 
-defineProps<{
+const props = withDefaults(defineProps<{
   slides: HeroSlide[];
-}>();
+  fallbackSlides?: HeroSlide[];
+}>(), {
+  fallbackSlides: () => fallbackData.heroSlides,
+});
 
 defineEmits<{
   select: [title: string];
 }>();
 
 const heroIndex = ref(0);
+const failedSlideImages = ref<Record<string, boolean>>({});
+
+function getSlideKey(slide: HeroSlide, index: number) {
+  return slide.id || `${slide.image}-${index}`;
+}
+
+function getFallbackImage(slide: HeroSlide, index: number) {
+  const fallbackSlide = props.fallbackSlides.find((item) => item.title === slide.title) ?? props.fallbackSlides[index];
+  return fallbackSlide?.image ?? "";
+}
+
+function getSlideImage(slide: HeroSlide, index: number) {
+  const fallbackImage = getFallbackImage(slide, index);
+  return failedSlideImages.value[getSlideKey(slide, index)] ? fallbackImage : resolveNetworkImage(slide.image, fallbackImage);
+}
+
+function onImageError(slide: HeroSlide, index: number) {
+  const fallbackImage = getFallbackImage(slide, index);
+  if (!fallbackImage || fallbackImage === slide.image) return;
+  failedSlideImages.value[getSlideKey(slide, index)] = true;
+}
 
 function onSlideChange(event: { detail: { current: number } }) {
   heroIndex.value = Number(event.detail.current);