chore: add pre-commit hook to forbid committing root-level Go binaries

Makefile

@@ -0,0 +1,11 @@
+
+
+# ━━━ Pre-commit hook (forbid root binaries) ━━━
+.PHONY: install-hooks
+install-hooks:
+	@if [ "$$(git config core.hooksPath 2>/dev/null)" != "hooks/" ]; then \
+		git config core.hooksPath hooks/; \
+		echo "Configured git core.hooksPath=hooks/"; \
+	fi
+	@chmod +x hooks/pre-commit
+	@echo "Pre-commit hook installed. (Bypass with: git commit --no-verify)"