fix(docker): add vendor directory check before skipping composer install

Prevents false positives from stale hash files when vendor/autoload.php
is missing. This fixes "Failed to open stream" errors after volume cleanup
or fresh clone scenarios where the hash file exists but vendor directory
doesn't.

Makefile

@@ -58,4 +58,4 @@ docs:
 
 db:
 	@echo "Recreate DB..."
-	docker compose exec --user www php-fpm bash -c "php artisan migrate:fresh && php artisan db:seed"
+	docker compose exec --user www php-fpm bash -c "php artisan migrate:fresh --seed"