- WillExecutorListWidget: double-click/Enter opens edit dialog
- WillExecutorWidget.add() accepts edit_key param for edit mode:
pre-populates URL, Info, Base Fee, Address fields
- Sync button (↻) pings executor URL via TaskThread and populates
fields; updates executor status in list in edit mode (200/KO)
- Loading indicator (⟳) during async ping
- QMessageBox with dialog as parent for sync errors
- Focus returns to URL field after sync error
- 'Add another' button only in add mode, no longer default (OK is default)
- Removed Promo Code field
- Heir dialog: 'Add another' no longer default (matches new pattern)