Let a migrated account hand its address to coinos v3

A `migrated` flag on the user, settable through /user and visible on the
public user endpoint. It changes exactly one thing: lnurlp for that
username defers to the names registrar, so payments to [email protected]
arrive in the person's v3 wallet. The account itself is untouched — same
username, same history, still usable here — which is why this is a flag
and not a rename or a shutdown.

Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Wvj4aoeMZwA7VUGdJP9Swi

1 files changed, 4 insertions, 4 deletions

diff --git a/routes/lnurl.ts b/routes/lnurl.ts
index ab9b64f1..58cea541 100644
--- a/routes/lnurl.ts
+++ b/routes/lnurl.ts
@@ -69,11 +69,11 @@ export default {
           .toLowerCase(),
       );
 
-      // Not one of ours? It may be a v3 payment address, which lives at this
-      // same domain but is served by the names registrar. Hand its response
-      // through unchanged — the callback it returns is absolute, so the payer
+      // Not one of ours — or migrated to coinos v3, where the name now lives.
+      // Either way the names registrar answers for it. Hand its response
+      // through unchanged: the callback it returns is absolute, so the payer
       // talks to the registrar directly from here on.
-      if (!user) {
+      if (!user || user.migrated) {
         const name = username.toLowerCase().replace(/\s/g, "");
         try {
           const r = await fetch(