first round of review

Makefile

@@ -23,6 +23,9 @@ db:
 db-stop:
 	docker compose down
 
+db-clean:
+	docker compose down -v
+
 db-ready:
 	@docker compose up -d db
 	@echo "Waiting for PostgreSQL to be ready..."
@@ -42,13 +45,13 @@ dev:
 	cd frontend && npm run dev & \
 	wait
 
-test-backend: db-ready
+test-backend: db-clean db-ready
 	cd backend && uv run pytest -v
 
 test-frontend:
 	cd frontend && npm run test
 
-test-e2e:
+test-e2e: db-clean db-ready
 	./scripts/e2e.sh
 
 test: test-backend test-frontend test-e2e