sweep_once() has never actually swept anything: `tollgate wallet drain
cashu` (no flags) blocks on an interactive y/N confirmation that Router::run
can never answer over a non-PTY SSH exec (empty stdin -> EOF -> defaults to
N -> "Operation cancelled." with exit code 0), so the drain_code != 0 check
can't catch it and every tick silently no-ops.
The obvious fix isn't safe either: `--json` skips the prompt, but confirmed
live against archy-x250-pa3 that on a wallet.db with a stale duplicate
per-mint entry (trailing-slash leftover from before the mint_url fix), it
completes a real swap against the good entry, then aborts on the second
(empty, stale) entry and reports "success": false without ever printing or
persisting the resulting token anywhere. 50 sats went from spendable balance
to gone in that one call. Documented so nobody "fixes" this by wiring in
--json before upstream fixes the partial-failure data loss.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KTdMfVJChCwCCYF1ZTRQLc
