fix: 4 bugs — MSK today events, settings scroll, note dates, persistent notes volume

- calendar API: today/week ranges use Moscow time (UTC+3) instead of UTC — previously today events did not appear until 03:00 MSK
- settings tab: add -webkit-overflow-scrolling: touch + touchAction pan-y for tablet scroll
- NotesTab: add date picker (pinDate) in editor header + date badge in list
- home: pinnedNotes now filters by pinDate (today or future), falls back to latest
- notes/auth: storage moved from /tmp to /data (falls back to /tmp if /data missing)
- deploy workflow: mount /opt/digital-home/smart-home-tablet-data:/data so notes survive redeploys

.gitea/workflows/deploy.yml

@@ -29,5 +29,6 @@ jobs:
             --label traefik.http.routers.tablet.tls.certresolver=letsencrypt \
             --label traefik.http.services.tablet.loadbalancer.server.port=3000 \
             --env-file /opt/digital-home/tablet.env \
+            -v /opt/digital-home/smart-home-tablet-data:/data \
             smart-home-tablet:latest
           echo 'Deploy done'