Address a cluster of low-severity robustness nits where an async
callback could be skipped (leaving a spinner spinning forever) or a
synchronous action could be re-fired mid-flight:
- app_network: add catch(...) fallbacks around the importPrivateKey and
submitZSendMany worker lambdas so a non-std throw can't escape the
worker and skip the main-thread callback (stuck "Importing…"/"Sending…").
- export_transactions: re-entrancy guard disabling Export while a write
is in flight.
- bootstrap_download: disable Cancel once clicked so the request is
visibly acknowledged and can't be re-fired before the worker stops.
- network_tab: give clear "already in list" feedback on a duplicate
server (keep the inputs, clear only the stale invalid-URL error) and
disable/relabel Refresh while a probe is in flight.
- key_export: offer Retry from the error branch (falls back to Reveal)
and guard against an empty/malformed address before dispatching.
- receive_tab: only enter the "generating…" state when a dispatch is
actually possible (guards a stuck spinner when disconnected).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
DanS
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