chore: add Makefile

Includes the following targets:
- `make lint`     → Run pre-commit hook for trailing whitespace
- `make format`   → Apply Prettier formatting across the repo
- `make push`     → Add, commit (with prompt), and push changes
- `make amend`    → Amend the last commit without editing message
- `make help`     → Show usage guide

Also includes optional extras like hook installation and reset utilities.

.github/workflows/semantic-release.yml

@@ -42,7 +42,7 @@ jobs:
           OUTPUT=$(npx semantic-release 2>&1)
           STATUS=$?
           echo "$OUTPUT" | tee /dev/stderr
-      
+
           if [[ $STATUS -eq 0 ]]; then
             # Extract release tag
             RELEASE_TAG=$(echo "$OUTPUT" | grep -oP '(?<=next release version is )[^ ]+')
@@ -55,4 +55,3 @@ jobs:
             echo "❌ semantic-release failed with unexpected error (exit $STATUS)."
             exit $STATUS
           fi
-

Makefile

@@ -0,0 +1,48 @@
+# Default help formatter
+.DEFAULT_GOAL := help
+
+# Colors
+GREEN := \033[0;32m
+RESET := \033[0m
+
+# Help generator (targets with ##)
+help: ## Show this help message
+	@echo ""
+	@echo "$(GREEN)Available make commands:$(RESET)"
+	@grep -E '^[a-zA-Z0-9_-]+:.*?## .*$$' $(MAKEFILE_LIST) \
+		| sort \
+		| awk 'BEGIN {FS = ":.*?## "}; {printf "  \033[36m%-20s\033[0m %s\n", $$1, $$2}'
+	@echo ""
+
+# 1. Pre-commit check: trailing whitespace only
+lint: ## Run pre-commit check for trailing whitespace
+	pre-commit run trailing-whitespace --all-files
+
+# 2. Format all files with prettier
+format: ## Run Prettier on the whole repo
+	npx prettier --write .
+
+# 3a-c. Stage, commit & push
+push: ## Add all files, commit (ask for message), and push
+	@git add .
+	@read -p "Enter commit message: " msg; \
+	git commit -m "$$msg"
+	@git push
+
+# 4. Amend last commit (no edit)
+amend: ## Amend last commit without editing the message
+	git commit --amend --no-edit
+
+# Add-ons you might like:
+
+check-hooks: ## Run all configured pre-commit hooks
+	pre-commit run --all-files
+
+install-hooks: ## Install pre-commit hooks in .git/hooks
+	pre-commit install
+
+reset-soft: ## Undo last commit but keep changes staged
+	git reset --soft HEAD~1
+
+clean: ## Remove temporary Python/node/docker files
+	rm -rf __pycache__ node_modules *.pyc *.log .pytest_cache .mypy_cache