Pending transactions that never complete now auto-cancel/expire after a
configurable window (NostrConfig::expiry_secs, default 24h; lower it in
nostr.toml to test). A sync-loop sweep (NostrService::expire_stale):
- cancels stale outgoing sends + invoices we paid via GRIM's cancel_tx
(WalletTask::Cancel), releasing the outputs they had locked;
- annotates incoming payments / invoices we issued as Cancelled only
(a late on-chain confirmation still wins);
- marks pending incoming requests Expired.
The activity feed and receipt now render "canceled" (this also fixes a
latent bug where a manually-cancelled tx still showed "pending").
Receipt de-duplication: the To/From name rows are shown only when the
counterparty has a real identity (petname or verified NIP-05); a bare
npub now appears once, in the "nostr" row, instead of twice.
38 lib tests pass (2 new for the expiry bucket logic).
2ro
c4d26d3b7f