refactor(mini-user): 门店套餐图改用 swiper auto-height 自适应（方案A）

- 移除手算高度逻辑，自适应模式启用 swiper 原生 autoHeight
- image 保持 mode=widthFix，完整展示不裁切
- 删除 .detail-carousel-wrap 固定比例/高度的覆盖依赖

Co-Authored-By: WorkBuddy <workbuddy@tencent.com>

apps/mini-user/src/components/ProductCarousel.tsx

@@ -1,4 +1,4 @@
-import { useEffect, useState } from 'react';
+import { useState } from 'react';
 import { View, Image, Swiper, SwiperItem } from '@tarojs/components';
 import Taro from '@tarojs/taro';
 
@@ -11,6 +11,7 @@ type ProductCarouselProps = {
    * cover=aspectFill 裁剪铺满（固定高度，可能裁切）
    * contain=aspectFit 完整显示（固定高度，可能留白）
    * adaptive=widthFix 按图片真实比例自适应高度，完整显示不裁剪（门店套餐详情用）
+   *   依赖 swiper 原生 auto-height：海报有多高，轮播就有多高，无裁切。
    */
   imageFit?: 'cover' | 'contain' | 'adaptive';
 };
@@ -25,56 +26,12 @@ export default function ProductCarousel({
 }: ProductCarouselProps) {
   const slides = images.length > 0 ? images : [''];
   const [activeIndex, setActiveIndex] = useState(0);
-  // adaptive 模式：实测容器宽度与各图渲染高度
-  const [wrapWidth, setWrapWidth] = useState(0);
-  const [imgHeights, setImgHeights] = useState<number[]>([]);
   const prefix =
     variant === 'store' ? 'store-detail-carousel' : variant === 'home' ? 'home-carousel' : 'detail-carousel';
   const isContain = imageFit === 'contain';
   const isAdaptive = imageFit === 'adaptive';
   const wrapClass = `${prefix}-wrap${isContain ? ` ${prefix}-wrap--contain` : ''}${isAdaptive ? ` ${prefix}-wrap--adaptive` : ''}`;
 
-  function getWindowWidth(): number {
-    try {
-      const info = (Taro as any).getWindowInfo?.() ?? Taro.getSystemInfoSync();
-      return info?.windowWidth || 375;
-    } catch {
-      return 375;
-    }
-  }
-
-  useEffect(() => {
-    if (!isAdaptive) return;
-    const query = Taro.createSelectorQuery();
-    query
-      .select(`.${prefix}-wrap--adaptive`)
-      .boundingClientRect((rect: { width?: number }) => {
-        if (rect && rect.width) setWrapWidth(rect.width);
-        else setWrapWidth(getWindowWidth());
-      })
-      .exec();
-    // 仅挂载时测量一次容器宽度（页面宽度稳定）
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [isAdaptive, prefix]);
-
-  function handleImageLoad(index: number, e: any) {
-    const detail = e?.detail;
-    const naturalW = detail?.width;
-    const naturalH = detail?.height;
-    if (!naturalW || !naturalH) return;
-    const w = wrapWidth || getWindowWidth();
-    const h = Math.round((naturalH / naturalW) * w);
-    setImgHeights((prev) => {
-      const next = [...prev];
-      next[index] = h;
-      return next;
-    });
-  }
-
-  // adaptive：随当前幻灯片高度变化；未加载时给一个 3:4 兜底高度
-  const adaptiveHeight = imgHeights[activeIndex] || Math.round((wrapWidth || getWindowWidth()) * 0.75);
-  const swiperStyle = isAdaptive ? { height: `${adaptiveHeight}px` } : undefined;
-
   function previewAt(index: number) {
     const urls = slides.filter(Boolean);
     if (!urls.length) return;
@@ -86,8 +43,8 @@ export default function ProductCarousel({
     <View className={wrapClass}>
       <Swiper
         className={prefix}
-        style={swiperStyle}
         circular={slides.length > 1}
+        autoHeight={isAdaptive}
         {...(variant === 'detail' && slides.length > 1 ? { autoplay: true, interval: 3500 } : {})}
         onChange={(e) => setActiveIndex(e.detail.current)}
       >
@@ -99,7 +56,6 @@ export default function ProductCarousel({
                 src={src}
                 mode={isAdaptive ? 'widthFix' : isContain ? 'aspectFit' : 'aspectFill'}
                 alt={alt}
-                onLoad={isAdaptive ? (e) => handleImageLoad(index, e) : undefined}
                 onClick={previewable ? () => previewAt(index) : undefined}
               />
             ) : (

apps/mini-user/src/styles/product-detail.css

@@ -18,17 +18,15 @@
   overflow: hidden;
 }
 
-/* adaptive 模式：去掉固定 1:1 比例，按图片真实比例自适应高度，完整显示不裁剪 */
+/* adaptive 模式（方案 A）：删除固定 1:1 比例与固定高度，
+   改用 swiper 原生 auto-height + image widthFix，海报有多高轮播就有多高，无裁切 */
 .detail-carousel-wrap--adaptive {
   aspect-ratio: auto;
   overflow: visible;
 }
 
-.detail-carousel-wrap--adaptive .detail-carousel {
-  height: auto;
-  transition: height 0.2s ease;
-}
-
+.detail-carousel-wrap--adaptive .detail-carousel,
+.detail-carousel-wrap--adaptive .detail-carousel-item,
 .detail-carousel-wrap--adaptive .detail-carousel-image {
   height: auto;
 }