v0.12.0 migrate sqlite3 to psql18, updated auth, deploy docs, account and replay updates

deploy/freebsd/chess-backup.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+# Nightly logical backup of the chess database. setup-jail.sh installs this as
+# /usr/local/sbin/chess-backup and schedules it as the postgres user through
+# /usr/local/etc/cron.d/chess-backup.
+#
+#   CHESS_BACKUP_DIR   destination (default: /var/db/postgres/backups)
+#   CHESS_BACKUP_KEEP  days of dumps to keep (default: 14)
+#
+# Restore into a freshly provisioned database with:
+#   su -m postgres -c 'pg_restore --no-owner --role=chess -d chess <dump>'
+# (use --role=chess_owner for the split-privilege setup).
+set -eu
+PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin
+
+dir=${CHESS_BACKUP_DIR:-/var/db/postgres/backups}
+keep=${CHESS_BACKUP_KEEP:-14}
+umask 077
+mkdir -p "$dir"
+
+target="$dir/chess-$(date -u +%Y%m%dT%H%M%SZ).dump"
+pg_dump --format=custom --dbname=chess --file="$target.partial"
+mv "$target.partial" "$target"
+find "$dir" -name 'chess-*.dump' -type f -mtime "+$keep" -delete