0a0bfdda

Author: Michael Lynch <git@mtlynch.io>

Committer: Michael Lynch <mtlynch@noreply.codeberg.org>

Reject unsafe relative media paths (#285)

Reject absolute paths and parent-directory escapes in RelativePath values so media lookups stay within the expected backend-relative root.

Reviewed-on: https://codeberg.org/mtlynch/little-moments/pulls/285