6cc7a0f9

Author: Michael Lynch <git@mtlynch.io>

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

Support animated GIF uploads (#225)

Owners can now upload a GIF, which is re-encoded to an animated AVIF (plus
thumbnails) and served like a photo. This is the first upload path that shells
out to ffmpeg, so the app derivations are wrapped with ffmpeg on PATH and the
runtime image installs it.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Reviewed-on: https://codeberg.org/mtlynch/little-moments/pulls/225
Codeberg
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