fix: persistence of awards column bug corrected

frontend/src/components/RecentQSOsGrid.tsx

@@ -254,7 +254,14 @@ export function RecentQSOsGrid({ rows, selectAllSignal, onRowDoubleClicked, onRo
   // Compute initial column defs: all columns defined, but those not marked
   // defaultVisible start hidden. The user's saved state (loaded onGridReady)
   // overrides this so a previously toggled column wins.
+  // While AG Grid rebuilds columns (award columns load async), it fires column
+  // events that would otherwise trigger a save of the DEFAULT visibility before
+  // we re-apply the user's saved state — clobbering it. This flag suppresses the
+  // auto-save during that window. Set in the memo (runs at render, before the
+  // column events) and cleared by the re-apply effect below.
+  const restoringRef = useRef(true);
   const columnDefs = useMemo<ColDef<QSOForm>[]>(() => {
+    restoringRef.current = true;
     const base = COL_CATALOG.map((c) => {
       const { group: _g, label: _l, defaultVisible, ...rest } = c;
       return { ...rest, hide: !defaultVisible };
@@ -290,6 +297,7 @@ export function RecentQSOsGrid({ rows, selectAllSignal, onRowDoubleClicked, onRo
     });
   }
   const saveColumnState = useCallback(() => {
+    if (restoringRef.current) return; // ignore the events fired by a column rebuild
     const state = gridRef.current?.api?.getColumnState();
     if (state) saveState(COL_STATE_KEY, state);
   }, []);
@@ -301,9 +309,11 @@ export function RecentQSOsGrid({ rows, selectAllSignal, onRowDoubleClicked, onRo
   // every rebuild so the user's choices win. No-op before the grid is ready.
   useEffect(() => {
     const api = gridRef.current?.api;
-    if (!api) return;
     const local = loadLocal(COL_STATE_KEY);
-    if (local) api.applyColumnState({ state: local as ColumnState[], applyOrder: true });
+    if (api && local) api.applyColumnState({ state: local as ColumnState[], applyOrder: true });
+    // Re-enable saving once AG Grid has settled the column events from the rebuild.
+    const t = window.setTimeout(() => { restoringRef.current = false; }, 0);
+    return () => window.clearTimeout(t);
   }, [awardCols]);
 
   function handleRowDoubleClicked(e: RowDoubleClickedEvent<QSOForm>) {