Expand built-in vault/discovery relay lists for redundancy

relay.nostr.band (shared by both lists) is currently unreachable, and
publishAndVerify() enforces a fixed minAcks/minReadbacks=2 floor
regardless of relay count -- so a 3-relay vault list had zero margin
the moment one relay went down, surfacing as "Registration did not
reach the required relay acknowledgement and readback quorum."

Add nostr.wine and relay.snort.social to the vault list, and
nostr-pub.wellorder.net to discovery, so losing any single relay no
longer risks failing registration.

Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01DY9UMTuF43Ekc2U4E1eDwX

packages/core/src/nostr/bootstrap.ts

@@ -17,15 +17,24 @@ import { D_TAG_BOOTSTRAP_RELAYS, KIND_APP_DATA } from "./kinds.js";
 export const MAINTAINER_PUBLIC_KEY_HEX =
   "0000000000000000000000000000000000000000000000000000000000000000".slice(0, 64);
 
+// §15.6's publishAndVerify enforces a fixed floor (minAcks/minReadbacks = 2)
+// regardless of how many relays are configured, so this list needs enough
+// healthy redundancy that losing any one relay still clears that floor
+// comfortably -- a 3-relay list has zero margin the moment one relay is
+// unreachable, which is exactly what "add more vault relays" (the
+// registration failure message) is telling operators to fix.
 export const BUILTIN_VAULT_RELAYS: readonly string[] = [
   "wss://relay.damus.io",
   "wss://nos.lol",
-  "wss://relay.nostr.band"
+  "wss://relay.nostr.band",
+  "wss://nostr.wine",
+  "wss://relay.snort.social"
 ];
 
 export const BUILTIN_DISCOVERY_RELAYS: readonly string[] = [
   "wss://purplepag.es",
-  "wss://relay.nostr.band"
+  "wss://relay.nostr.band",
+  "wss://nostr-pub.wellorder.net"
 ];
 
 /** Well-known static HTTPS fallback URLs for the signed relay-list document (§19.1). */