Template flow cleaned up

lib/create/methodSlugFromTitle.ts

@@ -0,0 +1,20 @@
+/**
+ * Client-safe slugifier that mirrors the one-time ingest that produced
+ * `data/create/customRule/<section>.json` `methods[].id`. Lives in
+ * `lib/create/` (not `lib/server/`) so client code — specifically the
+ * template "Customize" prefill — can map template entry titles to the chip
+ * ids the customize screens read out of `CreateFlowState`.
+ *
+ * Rules: NFKD-normalize, strip diacritics, drop apostrophes/brackets,
+ * collapse non-alphanumerics to single hyphens, trim leading/trailing
+ * hyphens. Server-side `lib/server/templateMethods.ts` re-exports this.
+ */
+export function methodSlugFromTitle(title: string): string {
+  const folded = title.normalize("NFKD").replace(/[\u0300-\u036f]/g, "");
+  const stripped = folded
+    .toLowerCase()
+    .replace(/['’`()\[\]]/g, "")
+    .replace(/[^a-z0-9]+/g, "-")
+    .replace(/^-+|-+$/g, "");
+  return stripped;
+}