(re)introduce Makefile

Makefile

@@ -0,0 +1,55 @@
+# Colors for pretty output
+BLUE := \033[36m
+BOLD := \033[1m
+RESET := \033[0m
+
+.DEFAULT_GOAL := help
+
+.PHONY: help verify install fmt test marimo clean
+
+##@ Development Setup
+
+venv:
+	@printf "$(BLUE)Creating virtual environment...$(RESET)\n"
+	@curl -LsSf https://astral.sh/uv/install.sh | sh
+	@uv venv --python 3.12
+
+install: venv ## Install all dependencies using uv
+	@printf "$(BLUE)Installing dependencies...$(RESET)\n"
+	@uv sync --dev --frozen
+
+##@ Code Quality
+
+fmt: venv ## Run code formatting and linting
+	@printf "$(BLUE)Running formatters and linters...$(RESET)\n"
+	@uv pip install pre-commit
+	@uv run pre-commit install
+	@uv run pre-commit run --all-files
+
+##@ Testing
+
+test: install ## Run all tests
+	@printf "$(BLUE)Running tests...$(RESET)\n"
+	@uv pip install pytest
+	@uv run pytest tests
+
+##@ Cleanup
+
+clean: ## Clean generated files and directories
+	@printf "$(BLUE)Cleaning project...$(RESET)\n"
+	@git clean -d -X -f
+
+##@ Marimo & Jupyter
+
+marimo: install ## Start a Marimo server
+	@printf "$(BLUE)Start Marimo server...$(RESET)\n"
+	@uv pip install marimo
+	@uv run marimo edit book/marimo
+
+##@ Help
+
+help: ## Display this help message
+	@printf "$(BOLD)Usage:$(RESET)\n"
+	@printf "  make $(BLUE)<target>$(RESET)\n\n"
+	@printf "$(BOLD)Targets:$(RESET)\n"
+	@awk 'BEGIN {FS = ":.*##"; printf ""} /^[a-zA-Z_-]+:.*?##/ { printf "  $(BLUE)%-15s$(RESET) %s\n", $$1, $$2 } /^##@/ { printf "\n$(BOLD)%s$(RESET)\n", substr($$0, 5) }' $(MAKEFILE_LIST)