feat: add sortie operation orders

scripts/verify-battle-save-normalization.mjs

@@ -35,6 +35,15 @@ try {
   assert(normalizeBattleSaveSlot(Number.NaN, 3) === 1, 'Expected NaN slot to normalize to slot 1.');
   assert(normalizeBattleSaveSlot(99, 3) === 3, 'Expected overflowing slot to clamp to slot count.');
   assert(isValidBattleSaveState(validState, options), 'Expected valid battle save to pass validation.');
+  assert(
+    ['elite', 'mobile', 'siege'].every((sortieOrderId) => isValidBattleSaveState({ ...validState, sortieOrderId }, options)),
+    'Expected every sortie order id to pass battle-save validation.'
+  );
+  const { sortieOrderId: _legacySortieOrderId, ...legacyStateWithoutSortieOrder } = validState;
+  assert(
+    isValidBattleSaveState(legacyStateWithoutSortieOrder, options),
+    'Expected legacy battle saves without a sortie order to remain valid.'
+  );
   const validSortieStatsState = {
     ...validState,
     battleStats: {
@@ -123,6 +132,10 @@ try {
     'Expected every tactical command field to round-trip.'
   );
   assert(parseBattleSaveState(JSON.stringify(validState), options)?.battleId === options.expectedBattleId, 'Expected valid JSON save to parse.');
+  assert(
+    parseBattleSaveState(JSON.stringify(validState), options)?.sortieOrderId === 'elite',
+    'Expected the selected sortie order to round-trip through battle-save parsing.'
+  );
   assert(parseBattleSaveState('{', options) === undefined, 'Expected malformed JSON to be ignored.');
   assert(parseBattleSaveState('', options) === undefined, 'Expected empty save payload to be ignored.');
 
@@ -134,6 +147,7 @@ try {
     ['invalid activeFaction', { activeFaction: 'neutral' }],
     ['invalid rosterTab', { rosterTab: 'neutral' }],
     ['invalid campaign step', { campaignStep: 'lost-progress' }],
+    ['invalid sortie order', { sortieOrderId: 'reserve' }],
     ['invalid actedUnitIds', { actedUnitIds: 'liu-bei' }],
     ['unknown acted unit id', { actedUnitIds: ['ghost-unit'] }],
     ['duplicate acted unit id', { actedUnitIds: ['liu-bei', 'liu-bei'] }],
@@ -281,6 +295,7 @@ function createValidBattleSaveState() {
     version: 1,
     battleId: 'first-battle-zhuo-commandery',
     campaignStep: 'first-battle',
+    sortieOrderId: 'elite',
     savedAt: '2026-07-05T00:00:00.000Z',
     turnNumber: 2,
     activeFaction: 'ally',