Replace ZStack-based cell with Color.clear.aspectRatio(1,.fit) + .overlay.
The overlay constrains all children (image, video badge, sync dot) to the
exact square frame, so scaledToFill cannot inflate the cell height in
LazyVGrid. Previously, the ZStack let the filled image push beyond the
aspectRatio constraint, causing inconsistent row heights.
Co-Authored-By: Kutesir <kutesir@provoc.ug>
Co-Authored-By: Sentry <sentry@provoc.ug>
GalleryViewModel.load() now has a three-tier resolution for manifest entries:
1. statusService.lastManifest — in-memory, freshest
2. NASManifestCache disk cache — survives restarts
3. Direct NAS download — fallback when both caches are cold (first launch after install,
or before BackupStatusService reconcile has completed)
The direct download also populates NASManifestCache so subsequent opens are instant.
Also adds GalleryViewModel.bind(to:connection:) which subscribes to
statusService.$lastManifest and automatically reloads gallery items when
BackupStatusService finishes reconciling — gallery updates without manual pull-to-refresh.
Co-Authored-By: Kutesir <kutesir@provoc.ug>
Co-Authored-By: Sentry <sentry@provoc.ug>
