z_sendmany returns an opid immediately; the tx is built/signed/broadcast
asynchronously afterward. The send path showed "Transaction sent successfully!"
and cleared the form on opid receipt, so a later async failure contradicted it.
Shield/merge stored the opid only in a dialog-local static (never polled), and
auto-shield ran a blocking z_shieldcoinbase on the UI thread and discarded its
opid — async failures of all three were silently lost.
- Add App::trackOperation(opid) so shield/merge/auto-shield register with the
shared opid poller (failures surface, balances refresh on completion).
- Defer the full-node send's success/failure to the poller via per-opid callbacks
(parseOperationStatusPoll now exposes failureByOpid); the "Sending..." spinner
covers the finalizing window, and the form is kept until terminal status.
- Dispatch auto-shield through the worker thread and use the configured fee.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
DanS
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