Will list: context menu actions and will-executor bulk tools
PreviewList: right-click menu with sign / details / broadcast / check /
copy id / copy / merge from txn / delete, with multi-selection support and
availability rules (broadcast force-repushes, delete restricted to invalid
or unsigned txs, sign skips non-valid txs).
WillExecutorWidget: Export, Ping All and Select All become dropdown buttons
(export all/selected/valid, ping all/selected, select all/only valid,
deselect all/only invalid).
WillExecutorListWidget: single-cell Copy action.
BalWindow: txids-scoped sign/broadcast plumbing and merge_single_transaction.