feat(chase): the global hunt — new, or new plus unconfirmed, every category

The gap between worked and confirmed becomes visible everywhere. A Chase
setting on the DX Cluster page picks the mode; in new-plus-unconfirmed the
verdicts for DXCC/band/mode/slot, prefix, county and state are judged against
CONFIRMED-only ledgers built from the operator's chosen sources (LoTW, card,
eQSL, QRZ.com — HRDLog has no confirmation field in ADIF to offer), and a
need that exists only because a QSL never arrived is flagged Unconf: the
cluster and decode badges render it dimmed, the convention the grid hunt
introduced. The grid's own Chase selector folds into the global one; its
square-matching scope stays where it was, being grid-specific. One snapshot
key change rebuilds the cache when any of it flips.

frontend/src/components/DecodesPanel.tsx

@@ -73,6 +73,10 @@ type StatusEntry = {
   new_pfx?: boolean;
   new_grid?: boolean;
   new_state?: boolean;
+  unconf_status?: boolean;
+  unconf_pfx?: boolean;
+  unconf_cty?: boolean;
+  unconf_state?: boolean;
   // "new" = never worked, "unconf" = worked and awaiting a confirmation.
   grid_state?: string;
   state?: string;
@@ -1145,7 +1149,9 @@ export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, o
                       </span>
                     )}
                     {entities.map((b) => (
-                      <span key={b.label} className={cn('rounded px-1 py-px text-[10px] font-bold uppercase tracking-wide shrink-0', b.cls)}>
+                      <span key={b.label}
+                        title={e?.unconf_status ? t('dec.unconfTip') : undefined}
+                        className={cn('rounded px-1 py-px text-[10px] font-bold uppercase tracking-wide shrink-0', b.cls, e?.unconf_status && 'opacity-50')}>
                         {t(b.label)}
                       </span>
                     ))}
@@ -1155,7 +1161,10 @@ export function DecodesPanel({ decodes, txMsgs, txState, txStates, spotStatus, o
                       // Same hue, held back — the badge reads as "less" of the
                       // same thing, and its label says which. One badge for both
                       // is what made a station worked an hour ago read as new.
-                      const unconf = b.key === 'new_grid' && e?.grid_state === 'unconf';
+                      const unconf = (b.key === 'new_grid' && e?.grid_state === 'unconf')
+                        || (b.key === 'new_state' && !!e?.unconf_state)
+                        || (b.key === 'new_county' && !!e?.unconf_cty)
+                        || (b.key === 'new_pfx' && !!e?.unconf_pfx);
                       const c = markerColour(b.marker);
                       return (
                         <span key={b.key as string}