test: ✅ add workflow validation script (requires actionlint)

Author: gingerbenw

scripts/lint-workflows.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# GitHub Actions Workflow Linter Script
+# This script lints all workflow files using actionlint
+
+set -euo pipefail
+
+echo "🔍 Linting GitHub Actions workflows..."
+
+# Check if actionlint is installed
+if ! command -v actionlint &> /dev/null; then
+    echo "❌ actionlint is not installed"
+    echo "📦 Install with: brew install actionlint"
+    exit 1
+fi
+
+# Lint all workflow files
+if actionlint .github/workflows/*.{yml,yaml}; then
+    echo "✅ All workflows are valid!"
+else
+    echo "❌ Workflow linting failed"
+    exit 1
+fi