Recover saves with malformed battle reports

src/game/state/campaignState.ts

@@ -812,11 +812,7 @@ function normalizeCampaignState(state: Partial<CampaignState>): CampaignState {
   normalized.sortieItemAssignments = normalizeSortieItemAssignments(recordOrEmpty(normalized.sortieItemAssignments));
   normalized.reserveTrainingFocus = normalizeReserveTrainingFocusId(normalized.reserveTrainingFocus);
   normalized.battleHistory = recordOrEmpty<CampaignBattleSettlement>(normalized.battleHistory);
-  if (isPlainObject(normalized.firstBattleReport)) {
-    normalized.firstBattleReport = cloneReport(normalized.firstBattleReport);
-  } else {
-    normalized.firstBattleReport = undefined;
-  }
+  normalized.firstBattleReport = normalizeFirstBattleReport(normalized.firstBattleReport);
   return normalized;
 }
 
@@ -878,6 +874,18 @@ function normalizeCampaignStep(step: unknown): CampaignStep {
   return typeof step === 'string' && campaignStepIds.has(step as CampaignStep) ? step as CampaignStep : 'new';
 }
 
+function normalizeFirstBattleReport(report: unknown): FirstBattleReport | undefined {
+  if (!isPlainObject(report)) {
+    return undefined;
+  }
+
+  try {
+    return cloneReport(report as FirstBattleReport);
+  } catch {
+    return undefined;
+  }
+}
+
 function reserveTrainingFocusDefinition(focusId?: string) {
   const normalizedId = normalizeReserveTrainingFocusId(focusId);
   return campaignReserveTrainingFocusDefinitions.find((focus) => focus.id === normalizedId) ?? campaignReserveTrainingFocusDefinitions[0];