Add shared hex normalization for comment flows

js/utils/hex.js

@@ -0,0 +1,11 @@
+export function normalizeHexString(value) {
+  if (typeof value !== "string") {
+    return "";
+  }
+
+  const trimmed = value.trim();
+  return trimmed ? trimmed.toLowerCase() : "";
+}
+
+export const normalizeHexId = normalizeHexString;
+export const normalizeHexPubkey = normalizeHexString;