Normalize malformed campaign bonds

src/game/state/campaignState.ts

@@ -802,8 +802,12 @@ function normalizeCampaignState(state: Partial<CampaignState>): CampaignState {
   normalized.step = normalizeCampaignStep(normalized.step);
   normalized.activeSaveSlot = normalizeSlot(normalized.activeSaveSlot);
   normalized.gold = normalizeNonNegativeInteger(normalized.gold);
-  normalized.roster = arrayOrEmpty<UnitData>(normalized.roster).map(cloneUnit);
-  normalized.bonds = arrayOrEmpty<CampBondSnapshot>(normalized.bonds).map(cloneBondSnapshot);
+  normalized.roster = arrayOrEmpty<unknown>(normalized.roster)
+    .filter(isPlainObject)
+    .map((unit) => cloneUnit(unit as UnitData));
+  normalized.bonds = arrayOrEmpty<unknown>(normalized.bonds)
+    .map(normalizeCampBondSnapshot)
+    .filter((bond): bond is CampBondSnapshot => Boolean(bond));
   normalized.completedCampDialogues = uniqueStrings(normalized.completedCampDialogues);
   normalized.completedCampVisits = uniqueStrings(normalized.completedCampVisits);
   normalized.inventory = normalizeInventory(normalized.inventory);
@@ -933,6 +937,33 @@ function normalizeFirstBattleReport(report: unknown): FirstBattleReport | undefi
   }
 }
 
+function normalizeCampBondSnapshot(value: unknown): CampBondSnapshot | undefined {
+  if (!isPlainObject(value)) {
+    return undefined;
+  }
+
+  const unitIds = arrayOrEmpty<unknown>(value.unitIds).filter((unitId): unitId is string => typeof unitId === 'string' && unitId.length > 0);
+  if (
+    typeof value.id !== 'string' ||
+    value.id.length === 0 ||
+    typeof value.title !== 'string' ||
+    value.title.length === 0 ||
+    unitIds.length < 2
+  ) {
+    return undefined;
+  }
+
+  return {
+    ...(value as CampBondSnapshot),
+    id: value.id,
+    title: value.title,
+    unitIds: [unitIds[0], unitIds[1]] as [string, string],
+    level: normalizeNonNegativeInteger(value.level),
+    exp: normalizeNonNegativeInteger(value.exp),
+    battleExp: normalizeNonNegativeInteger(value.battleExp)
+  };
+}
+
 function reserveTrainingFocusDefinition(focusId?: string) {
   const normalizedId = normalizeReserveTrainingFocusId(focusId);
   return campaignReserveTrainingFocusDefinitions.find((focus) => focus.id === normalizedId) ?? campaignReserveTrainingFocusDefinitions[0];