Without keep-id the container's UID:GID maps into the rootless podman
subuid range (524288+), so the sidecar couldn't create
`/photoprism/originals/.duplicates/` — the archive endpoint failed
with "mkdir: permission denied", and rename / folder ops would have
hit the same wall.
The PhotoPrism container already has this override for the same
reason; mirror it for the sidecar.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Replace the legacy mule-image backend with PhotoPrism plus a thin
SvelteKit client and a Node sidecar for endpoints PhotoPrism doesn't
expose (file rename), and add a two-phase migrator (metadata via PUT,
heaps → albums) for the existing Postgres library.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
