feat(android): back the phone's contacts up to a group of one's own

A Contacts backup section on the Android Sync page sends a dated .vcf into
<folder>/<account>-contacts once a day when the address book changed, only
to a group the account is alone in, checked again at every run.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 8 insertions, 3 deletions

diff --git a/packages/meshbay-hub/src/meshbay_hub/static/android-sync-page.js b/packages/meshbay-hub/src/meshbay_hub/static/android-sync-page.js
index 6285b3c..5145515 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/android-sync-page.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/android-sync-page.js
@@ -1,16 +1,21 @@
 // The Android Sync page: what this phone sends to its groups, on the Android
-// application only (docs/MESHBAY_DESIGN.md §9.12). Loaded on demand, like the
-// sections it holds: no other client has it.
+// application only (docs/MESHBAY_DESIGN.md §9.12, §9.13). Loaded on demand,
+// like the sections it holds: no other client has it.
 
 import { html } from './vendor/htm-preact.js';
 import { t } from './i18n.js';
+import * as platform from './platform.js';
 import { PhotoSyncSection } from './photo-sync-settings.js';
+import { DocSyncSection } from './phone-sync-settings.js';
 
 export function AndroidSyncPage({ user, groups }) {
   return html`
     <div>
       <h2>${t('androidsync.title')}</h2>
-      <${PhotoSyncSection} user=${user} groups=${groups || []} />
+      ${platform.photoSync.available && html`
+        <${PhotoSyncSection} user=${user} groups=${groups || []} />`}
+      ${platform.contactSync.available && html`
+        <${DocSyncSection} kind="contacts" user=${user} groups=${groups || []} />`}
     </div>
   `;
 }