feat(ui): use face-map layout for report zones and manual region picker; restrict manual care to smart mode

- scan-report: replace zone card grid with the same oval face-map layout as
  treatment-setup, zones tinted by recommended light with mode label; restore
  the per-light legend under the map
- manual-treatment: region picker now uses the same face-map layout
- manual care mode selection is smart-mode only: entry link hidden for
  non-subscribers and the page itself checks subscription (free mode passes
  since the backend reports it as active)

miniprogram/pages/treatment-setup/treatment-setup.wxml

@@ -38,7 +38,7 @@
       {{i18n.setup.startBtn}}
     </button>
 
-    <view class="manual-entry" bindtap="onManual" style="text-align:center;color:#E8503A;font-size:26rpx;margin-top:28rpx;">{{i18n.manual.entryLink}}</view>
+    <view class="manual-entry" wx:if="{{!subExpired}}" bindtap="onManual" style="text-align:center;color:#E8503A;font-size:26rpx;margin-top:28rpx;">{{i18n.manual.entryLink}}</view>
 
     <view class="error-text" wx:if="{{error}}">{{error}}</view>
   </view>