Add help to Makefile

Makefile

@@ -1,21 +1,26 @@
+.PHONY: help
+help: ## Show this help.
+	@uv run python -c "import re; \
+	[[print(f'\033[36m{m[0]:<20}\033[0m {m[1]}') for m in re.findall(r'^([a-zA-Z_-]+):.*?## (.*)$$', open(makefile).read(), re.M)] for makefile in ('$(MAKEFILE_LIST)').strip().split()]"
+
 DOCKER_COMPOSE_DEV=docker compose -f docker-compose.yml -f docker-compose.override.yml
 
+.PHONY: dev
+dev: ## Start up all containers for development.
+	${DOCKER_COMPOSE_DEV} up
+
+.PHONY: frontend-dev
+frontend-dev: ## Start the frontend dev server.
+	cd frontend && npm run dev
+
 .PHONY: api-dev
-api-dev:
+api-dev: ## Start the backend alone using Docker Compose.
 	${DOCKER_COMPOSE_DEV} up backend
 
 .PHONY: local-api
-local-api:
+local-api: ## Run the FastAPI backend directly.
 	cd backend && make local-api
 
-.PHONY: dev
-dev:
-	${DOCKER_COMPOSE_DEV} up
-
 .PHONY: build-dev
-build-dev:
+build-dev: ## Build containers for development.
 	${DOCKER_COMPOSE_DEV} build
-
-.PHONY: frontend-dev
-frontend-dev:
-	cd frontend && npm run dev