chore: add pnpm install to make

Signed-off-by: Tobias O <tobias.olenyi@envipath.com>

Makefile

@@ -20,6 +20,10 @@ db-down: ## Stop PostgreSQL database
 	@echo "Stopping PostgreSQL database..."
 	@docker compose down
 
+js-deps: ## Install Frontenddependencies
+	@echo "Installing frontend dependencies..."
+	@pnpm install
+
 migrate: ## Run database migrations
 	@echo "Running migrations..."
 	@uv run python manage.py migrate
@@ -36,7 +40,7 @@ bootstrap: ## Bootstrap initial data (anonymous user, packages, models)
 	@echo "  Email: admin@envipath.com"
 	@echo "  Password: SuperSafe"
 
-dev: db-up
+dev: db-up js-deps
 	@uv run python manage.py runserver
 
 shell: ## Open Django shell