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/i18n/locales/manual.js

@@ -19,7 +19,8 @@ module.exports = {
     starting: '启动中...',
     noRegionSelected: '请至少选择一个区域',
     startFailed: '启动失败',
-    entryLink: '手动选择波长护理 ›'
+    entryLink: '手动选择波长护理 ›',
+    smartOnly: '手动选择护理模式为智能模式专属，开通订阅后即可使用'
   },
   en: {
     navTitle: 'Manual Care',
@@ -39,6 +40,7 @@ module.exports = {
     starting: 'Starting...',
     noRegionSelected: 'Please select at least one region',
     startFailed: 'Failed to start',
-    entryLink: 'Manual wavelength care ›'
+    entryLink: 'Manual wavelength care ›',
+    smartOnly: 'Choosing a care mode manually is a Smart Mode feature. Subscribe to unlock it.'
   }
 }