Make entrypoint resilient to migration failures

If migrations fail (e.g. table ownership mismatch), log a helpful
fix command and continue startup instead of crashing the container.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker/entrypoint.sh

@@ -49,7 +49,11 @@ php artisan view:cache
 php artisan event:cache
 
 # Run pending migrations
-php artisan migrate --force --no-interaction
+php artisan migrate --force --no-interaction || {
+    echo "==> WARN: Migration failed. If 'Insufficient privilege', ensure DB_USERNAME owns all tables."
+    echo "==> Fix: psql -U postgres -d \$DB_DATABASE -c \"REASSIGN OWNED BY old_owner TO \$DB_USERNAME;\""
+    echo "==> Continuing startup..."
+}
 
 # First-deploy seeding (one-click install)
 if [ "$RUN_SEED_ON_FIRST_DEPLOY" = "true" ]; then