Fix deploy pipeline and add missing event registrations migration.

Correct CI workflow for events.ladill.com, default deploy paths, nginx
provisioning step, and qr_event_registrations table migration.

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

deploy/deploy.sh

@@ -2,7 +2,7 @@
 # Fast on-host release deploy (same model as climpme/web/deploy/deploy.sh).
 set -Eeuo pipefail
 
-APP_ROOT="${LADILL_APP_ROOT:-/var/www/ladill-qr-plus}"
+APP_ROOT="${LADILL_APP_ROOT:-/var/www/ladill-events}"
 RELEASES_DIR="$APP_ROOT/releases"
 SHARED_DIR="$APP_ROOT/shared"
 CURRENT_LINK="$APP_ROOT/current"
@@ -230,7 +230,7 @@ if [ -L "$CURRENT_LINK" ] && [ -f "$CURRENT_LINK/artisan" ]; then
   (cd "$CURRENT_LINK" && php artisan queue:restart) || true
 fi
 if command -v supervisorctl >/dev/null 2>&1; then
-  supervisorctl restart ladill-qr-plus-worker:* 2>/dev/null || true
+  supervisorctl restart ladill-events-worker:* 2>/dev/null || true
 fi
 
 log "Cleaning old releases"