Restore scripts/utils/path.mjs

File was removed in cleanup but is still required by changed-test-mapper.mjs.
Provides normalizePath utility for build scripts.

Author: jdalton

scripts/utils/path.mjs

@@ -0,0 +1,18 @@
+/**
+ * @fileoverview Simplified path utilities for build scripts.
+ *
+ * This is intentionally separate from src/lib/path/* to avoid circular
+ * dependencies where build scripts depend on the built dist output.
+ */
+
+import path from 'node:path'
+
+/**
+ * Normalize a file path to use forward slashes
+ *
+ * @param {string} filePath - Path to normalize
+ * @returns {string}
+ */
+export function normalizePath(filePath) {
+  return path.normalize(filePath).split(path.sep).join('/')
+}