fix(test): pre-create hadoop-warehouse dir before Docker compose

The integration-setup target now creates the hadoop-warehouse
directory before docker compose up, ensuring it is owned by the
CI runner rather than root. This allows Go tests to create
namespace subdirectories inside it.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: tanmayrauth

Makefile

@@ -32,6 +32,7 @@ lint-install:
 	go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@$(GOLANGCI_LINT_VERSION)
 
 integration-setup:
+	mkdir -p internal/recipe/hadoop-warehouse
 	docker compose -f internal/recipe/docker-compose.yml up -d
 	sleep 10
 	docker compose -f internal/recipe/docker-compose.yml exec -T spark-iceberg ipython ./provision.py