Add displayField configuration to award definitions

Add configurable displayField to award definitions to control what
is shown in award details instead of always using the entity value.

## Award Definitions Updated
- DXCC: displayField = 'entity' (shows country name)
- DXCC CW: displayField = 'entity' (shows country name)
- WAS: displayField = 'state' (shows state name)
- VUCC: displayField = 'grid' (shows grid square)
- RS-44: displayField = 'callsign' (shows callsign)

## Backend Changes
- Preserve displayField when normalizing award rules
- Use displayField to determine entity name in details
- Fallback logic for awards without displayField
- Add satName to entity data for better display

This fixes VUCC showing grid squares instead of country names.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/backend/services/awards.service.js

@@ -70,6 +70,7 @@ function normalizeAwardRules(rules) {
       type: 'entity',
       entityType: rules.baseRule.entityType,
       target: rules.baseRule.target,
+      displayField: rules.baseRule.displayField,
       filters: rules.filters,
     };
   }
@@ -81,6 +82,7 @@ function normalizeAwardRules(rules) {
       type: 'entity',
       entityType: rules.countBy === 'qso' ? 'callsign' : 'callsign',
       target: rules.target,
+      displayField: rules.displayField,
       filters: rules.filters,
     };
   }
@@ -277,16 +279,27 @@ export async function getAwardEntityBreakdown(userId, awardId) {
     if (!entity) continue;
 
     if (!entityMap.has(entity)) {
+      // Determine what to display as the entity name
+      // Use displayField from award rules, or fallback to entity/type
+      let displayName = String(entity);
+      if (rules.displayField) {
+        displayName = String(qso[rules.displayField] || entity);
+      } else {
+        // Fallback: try entity, state, grid, callsign in order
+        displayName = qso.entity || qso.state || qso.grid || qso.callsign || String(entity);
+      }
+
       entityMap.set(entity, {
         entity,
         entityId: qso.entityId,
-        entityName: qso.entity || qso.state || qso.grid || qso.callsign || String(entity),
+        entityName: displayName,
         worked: false,
         confirmed: false,
         qsoDate: qso.qsoDate,
         band: qso.band,
         mode: qso.mode,
         callsign: qso.callsign,
+        satName: qso.satName,
       });
     }