GroupCard was defined inside ExportFieldsDialog, so it got a new component
identity every render and React remounted the whole grid on each sel change,
making the per-group All/None buttons (and checkboxes) feel unresponsive. Hoist
GroupCard to module scope with sel + handlers passed as props. Changelog 0.21.1.
Global "Export to ADIF" gains a third option "Choose fields…" next to the
standard-only and full-OpsLog choices, and right-clicking selected QSOs adds
"Export selected — choose fields…". The picker separates official ADIF 3.1.7
fields (grouped by category) from OpsLog/non-standard tags actually present in
the log (discovered via DistinctExtraKeys over extras_json), with All/None per
group and reset-to-defaults; the selection is persisted per user.
Backend: adif.Exporter gains a Fields allow-set that gates every promoted and
extras field in writeRecord; app.go ExportADIF/ExportADIFFiltered/
ExportADIFSelected take a fields []string param, plus new ADIFExtraFields.
rouggy