Index, probe, and announce LNURL mints in the API.

Wire discovery and probing for LNURL mints, add rate-limited POST /api/index
for user submissions, and optionally announce confirmed state to relays.

Co-authored-by: Cursor <cursoragent@cursor.com>

api/src/seed.ts

@@ -10,7 +10,7 @@
 import { closeDb, getDb } from './db.ts';
 import { closePool, runDiscovery } from './discovery.ts';
 import { log } from './log.ts';
-import { insertMintIfNew } from './mints.ts';
+import { insertLnurlIfNew, insertMintIfNew } from './mints.ts';
 import { probeAll } from './probe.ts';
 import { listMints } from './queries.ts';
 
@@ -54,6 +54,23 @@ const SEED_MINTS = [
   'https://kashu.me',
 ];
 
+/**
+ * LNURL mints, seeded by URL alone.
+ *
+ * Short for the obvious reason: `kind:38174` is a proposed kind (see
+ * `docs/KIND-LNURL-MINT.md`) and there are no announcements on the network yet, so
+ * unlike Cashu — where this list was read off real 38172 events — there is nothing to
+ * read it off. This is the reference instance the ecosystem was built against, and
+ * discovery takes over the moment operators start announcing.
+ *
+ * Seeded with no status: `insertLnurlIfNew` writes `unknown` and the first probe cycle
+ * decides, exactly as it does for a Cashu mint. Being on this list is not a claim that
+ * a mint is up, and is not an endorsement of it.
+ */
+const SEED_LNURL = [
+  'https://lnurl.21mint.me',
+];
+
 function pad(s: string, width: number): string {
   return s.length > width ? `${s.slice(0, width - 1)}…` : s.padEnd(width);
 }
@@ -64,7 +81,15 @@ async function main(): Promise<void> {
 
   let added = 0;
   for (const url of SEED_MINTS) if (await insertMintIfNew(url)) added++;
-  log.info('seed list ingested', { listed: SEED_MINTS.length, added });
+
+  let addedLnurl = 0;
+  for (const url of SEED_LNURL) if (await insertLnurlIfNew(url)) addedLnurl++;
+
+  log.info('seed list ingested', {
+    listed: SEED_MINTS.length + SEED_LNURL.length,
+    added: added + addedLnurl,
+    lnurl: addedLnurl,
+  });
 
   await probeAll();
   const discovery = await runDiscovery(true);
@@ -109,6 +134,7 @@ async function main(): Promise<void> {
 
   const mints = listed.filter((m) => m.type === 'cashu');
   const federations = listed.filter((m) => m.type === 'fedimint');
+  const lnurlMints = listed.filter((m) => m.type === 'lnurl');
   const count = (rows: typeof listed, status: string) =>
     rows.filter((m) => m.status === status).length;
   const reviews = listed.reduce((sum, m) => sum + m.review_count, 0);
@@ -128,6 +154,10 @@ async function main(): Promise<void> {
       `${count(federations, 'offline')} reported down, ` +
       `${count(federations, 'announced')} announced only)`,
   );
+  console.log(
+    `${lnurlMints.length} LNURL mints (${count(lnurlMints, 'online')} online, ` +
+      `${count(lnurlMints, 'offline')} offline)`,
+  );
   console.log(`${reviews} reviews indexed`);
 
   closePool();