Harden malformed campaign save recovery

scripts/verify-campaign-save-normalization.mjs

@@ -59,6 +59,49 @@ try {
     `Expected modern sortie fields to be restored: ${JSON.stringify(legacy)}`
   );
 
+  storage.clear();
+  storage.set(
+    campaignStorageKey,
+    JSON.stringify({
+      version: 1,
+      updatedAt: '',
+      step: 'third-camp',
+      activeSaveSlot: '2',
+      gold: '410',
+      roster: { corrupted: true },
+      bonds: { corrupted: true },
+      completedCampDialogues: ['dialogue-a', 17, 'dialogue-a', ''],
+      completedCampVisits: 'visit-a',
+      inventory: { bean: '3', wine: -2, empty: 0 },
+      selectedSortieUnitIds: { corrupted: true },
+      sortieFormationAssignments: 'front',
+      sortieItemAssignments: {
+        'liu-bei': { bean: '2', wine: -1 },
+        'guan-yu': 'broken'
+      },
+      battleHistory: []
+    })
+  );
+  const malformed = loadCampaignState();
+  assert(malformed.step === 'third-camp', `Expected malformed save progress to survive: ${JSON.stringify(malformed)}`);
+  assert(malformed.activeSaveSlot === 2 && malformed.gold === 410, `Expected malformed numeric fields to normalize: ${JSON.stringify(malformed)}`);
+  assert(Array.isArray(malformed.roster) && malformed.roster.length === 0, `Expected malformed roster to reset to an array: ${JSON.stringify(malformed)}`);
+  assert(Array.isArray(malformed.bonds) && malformed.bonds.length === 0, `Expected malformed bonds to reset to an array: ${JSON.stringify(malformed)}`);
+  assert(
+    malformed.completedCampDialogues.length === 1 &&
+      malformed.completedCampDialogues[0] === 'dialogue-a' &&
+      malformed.completedCampVisits.length === 0,
+    `Expected malformed completion lists to keep unique strings only: ${JSON.stringify(malformed)}`
+  );
+  assert(
+    malformed.inventory.bean === 3 &&
+      malformed.inventory.wine === undefined &&
+      malformed.sortieItemAssignments['liu-bei']?.bean === 2 &&
+      malformed.sortieItemAssignments['liu-bei']?.wine === undefined &&
+      Object.keys(malformed.sortieFormationAssignments).length === 0,
+    `Expected malformed inventory and sortie assignments to normalize: ${JSON.stringify(malformed)}`
+  );
+
   storage.clear();
   storage.set(campaignStorageKey, JSON.stringify({ version: 99, step: 'sixty-sixth-camp' }));
   const unsupported = loadCampaignState();
@@ -79,7 +122,7 @@ try {
   const fallback = loadCampaignState();
   assert(fallback.step === 'second-camp' && fallback.activeSaveSlot === 2, `Expected valid slotted save fallback: ${JSON.stringify(fallback)}`);
 
-  console.log('Verified campaign save normalization, legacy recovery, unsupported-version rejection, and slotted fallback.');
+  console.log('Verified campaign save normalization, malformed-field recovery, unsupported-version rejection, and slotted fallback.');
 } finally {
   await server.close();
 }