Focalboard writes its sqlite db and uploads under /opt/focalboard/data (its
working dir), but the compose mounted ./data:/data — an unused path — so the
database was never persisted and was lost on every container recreation. Mount
./data:/opt/focalboard/data so db + files survive, and declare the db for live
backup (data/focalboard.db).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Signed-off-by: librelad <librelad@digitalangels.vip>