diff --git a/src/cdn-name-index.mjs b/src/cdn-name-index.mjs
new file mode 100644
index 0000000..4e1e148
--- /dev/null
+++ b/src/cdn-name-index.mjs
@@ -0,0 +1,48 @@
+// Keep the CDN's interpreted name index fresh from the gateway's own index.
+//
+// Ariadne for Android (and Theseus, via NETWORKS.cdnIndexUrl) pull
+// https://dl.silentmode.st/bns-name-index.json on cold start: a snapshot of
+// every registered name with its records, so the first page loads before
+// the electrum walk finishes. It was produced by publish-name-mirror.mjs,
+// which needs the operator wallet and ran by hand — the CDN copy went stale
+// for weeks (seven names behind on 2026-09-28). The gateway already holds
+// the same index in memory and serves it as /api/registry, so this script
+// simply reshapes that into the snapshot format and writes the CDN file.
+// Runs on the VPS from a systemd timer (VPS/SilentMode/cdn-name-index.*).
+//
+//   node cdn-name-index.mjs [--gateway http://127.0.0.1:8700] [--out /opt/silent-mode/dl/bns-name-index.json]
+//
+// Snapshot shape (what Bns.java's loadDisk / pullSiaIndex parse):
+//   [{ name, category, records, txid, height, updatedTxid }, …]
+import { readFileSync, writeFileSync, renameSync, existsSync } from "node:fs";
+
+const args = process.argv.slice(2);
+const opt = (k, d) => { const i = args.indexOf(k); return i >= 0 && args[i + 1] ? args[i + 1] : d; };
+const GATEWAY = opt("--gateway", "http://127.0.0.1:8700");
+const OUT = opt("--out", "/opt/silent-mode/dl/bns-name-index.json");
+const MIN_NAMES = 10; // a shorter answer is a gateway still warming up, not the registry
+
+const r = await fetch(`${GATEWAY}/api/registry`, { signal: AbortSignal.timeout(20_000) });
+if (!r.ok) throw new Error(`gateway ${r.status}`);
+const reg = await r.json();
+const names = Array.isArray(reg.names) ? reg.names : [];
+if (names.length < MIN_NAMES) throw new Error(`only ${names.length} names — not writing`);
+
+const snapshot = names
+  .filter((e) => e && typeof e.name === "string" && e.records && typeof e.records === "object")
+  .map((e) => ({
+    name: e.name,
+    category: e.category || "",
+    records: e.records,
+    txid: e.txid || "",
+    height: Number(e.height) || 0,
+    updatedTxid: e.updated_txid ?? e.updatedTxid ?? null,
+  }))
+  .sort((a, b) => (a.height || 0) - (b.height || 0) || a.name.localeCompare(b.name));
+
+const next = JSON.stringify(snapshot);
+const prev = existsSync(OUT) ? readFileSync(OUT, "utf8") : "";
+if (prev === next) { console.log(`unchanged (${snapshot.length} names)`); process.exit(0); }
+writeFileSync(OUT + ".tmp", next);
+renameSync(OUT + ".tmp", OUT);
+console.log(`wrote ${OUT}: ${snapshot.length} names, height hint ${reg.height_hint ?? "?"}`);