feat: materialize award references into the QSO row (award_refs column)

Award refs are now computed once and stored on the QSO as a JSON column
(award_refs, e.g. {"DDFM":"74","WAJA":"12"}) instead of recomputing the whole
award engine on every grid page load. Written on log/edit/UDP-import and
bulk-recomputed when an award definition or reference list changes; a one-time
per-logbook backfill materializes pre-existing QSOs. The grid reads the column
directly like any other field, so it's fast and available everywhere (including
the shared MySQL logbook).

Also fix per-profile grid column layout: the DB copy was already per-profile,
but the localStorage cache used one global namespace and shadowed it, so a
profile switch kept the previous profile's columns/widths. gridPrefs now scopes
the cache by active profile id and the grids remount on profile:changed.

frontend/src/lib/uiPref.ts

@@ -32,7 +32,10 @@ const PORTABLE_KEYS = [
   'opslog.clusterLockBand', 'opslog.clusterLockMode', 'opslog.clusterStatusFilter',
   'opslog.clusterModeFilter', 'opslog.clusterSearch', 'opslog.clusterHideWorked',
   'opslog.activeTab',     // last selected tab
-  'hamlog.awardColsShown', // which award columns are shown in the QSO grid
+  // NOTE: 'hamlog.awardColsShown' and the grid column layouts are NOT listed here.
+  // They are handled by lib/gridPrefs, which scopes the localStorage cache PER
+  // PROFILE and mirrors to the DB (already per-profile) itself — mirroring them
+  // through this global path would fight that per-profile scoping.
 ];
 
 // syncPortablePrefs reconciles the DB with the local cache at startup: