cluster0: QR verify email attachment, libqrencode-tools, src=qr analytics

ShortLinksRepository mail pack + renderQrPng; cluster APK includes
libqrencode-tools; deploy-ac-url-shortener ensures QR CLI.

Co-authored-by: Cursor <cursoragent@cursor.com>

sim/cluster0/scripts/deploy-ac-url-shortener.sh

@@ -24,5 +24,7 @@ else
   git clone --branch "$BRANCH" --depth 1 "$ORIGIN" "$URL_ROOT"
 fi
 
+apk add --no-cache libqrencode libqrencode-tools >/dev/null 2>&1 || true
+
 chown -R nginx:nginx "$URL_ROOT" 2>/dev/null || true
 log "deploy-ac-url-shortener_ok $(host_short) $(git -C "$URL_ROOT" rev-parse --short HEAD)"

sim/cluster0/scripts/verify-mail-lab.sh

@@ -28,7 +28,10 @@ $ok = AuthMailer::sendVerifyEmail($to, $long);
 echo $ok ? "mail_ok" : "mail_fail";
 ' 2>&1)" || _out="mail_fail"
 
-log "$_out to=$TO long=$_long"
+log "$_out to=$TO short=$(echo "$_long" | sed 's/token=.*/token=…/')"
+if echo "$_out" | grep -q mail_ok; then
+  log "hint: expect s.f0xx.org short link + verify-email-qr.png attachment (QR encodes …&src=qr)"
+fi
 case "$_out" in
   mail_ok) exit 0 ;;
   *) exit 1 ;;