fix: align scenario 2400 battle replay parity

app/game-api/src/battleSim/processor.ts

@@ -134,11 +134,14 @@ const mapCityPayload = (payload: BattleSimJobPayload['attackerCity']): City => (
     },
 });
 
-const mapGeneralPayload = (payload: BattleSimJobPayload['attackerGeneral']): General => ({
+const mapGeneralPayload = (
+    payload: BattleSimJobPayload['attackerGeneral'],
+    currentCityId: number
+): General => ({
     id: payload.no,
     name: payload.name,
     nationId: payload.nation,
-    cityId: payload.officer_city,
+    cityId: payload.city ?? currentCityId,
     troopId: 0,
     stats: {
         leadership: payload.leadership,
@@ -184,10 +187,12 @@ const mapGeneralPayload = (payload: BattleSimJobPayload['attackerGeneral']): Gen
         dex3: payload.dex3,
         dex4: payload.dex4,
         dex5: payload.dex5,
-        intelExp: payload.intel_exp,
-        strengthExp: payload.strength_exp,
-        leadershipExp: payload.leadership_exp,
-        defenceTrain: payload.defence_train,
+        intel_exp: payload.intel_exp,
+        strength_exp: payload.strength_exp,
+        leadership_exp: payload.leadership_exp,
+        defence_train: payload.defence_train,
+        officerCity: payload.officer_city,
+        officer_city: payload.officer_city,
         rank_warnum: payload.warnum,
         rank_killnum: payload.killnum,
         rank_killcrew: payload.killcrew,
@@ -304,8 +309,8 @@ const resolveDefenderOrderPayload = (payload: BattleSimJobPayload): number[] =>
     const defenderNation = mapNationPayload(payload.defenderNation);
     const attackerCity = mapCityPayload(payload.attackerCity);
     const defenderCity = mapCityPayload(payload.defenderCity);
-    const attacker = mapGeneralPayload(payload.attackerGeneral);
-    const defenders = payload.defenderGenerals.map(mapGeneralPayload);
+    const attacker = mapGeneralPayload(payload.attackerGeneral, attackerCity.id);
+    const defenders = payload.defenderGenerals.map((general) => mapGeneralPayload(general, defenderCity.id));
     const warActionModules = buildWarActionModules(payload.unitSet, payload.scenarioEffect);
 
     return resolveDefenderOrder({
@@ -376,8 +381,10 @@ export const processBattleSimJob = (
         const defenderNation = mapNationPayload(payload.defenderNation);
         const attackerCity = mapCityPayload(payload.attackerCity);
         const defenderCity = mapCityPayload(payload.defenderCity);
-        const attackerGeneral = mapGeneralPayload(payload.attackerGeneral);
-        const defenderGenerals = payload.defenderGenerals.map(mapGeneralPayload);
+        const attackerGeneral = mapGeneralPayload(payload.attackerGeneral, attackerCity.id);
+        const defenderGenerals = payload.defenderGenerals.map((general) =>
+            mapGeneralPayload(general, defenderCity.id)
+        );
 
         const initialRice = new Map<number, number>();
         initialRice.set(attackerGeneral.id, attackerGeneral.rice);

app/game-api/src/battleSim/schema.ts

@@ -6,6 +6,7 @@ export const zBattleSimGeneral = z.object({
     no: z.number().int().positive(),
     name: z.string().min(1),
     nation: z.number().int().positive(),
+    city: z.number().int().min(0).optional(),
     turntime: z.string().min(1),
     personal: z.string().nullable(),
     special: z.string().nullable().optional(),

app/game-api/src/battleSim/types.ts

@@ -8,6 +8,8 @@ export interface BattleSimGeneralPayload {
     no: number;
     name: string;
     nation: number;
+    /** Current city. Older clients omit this; the surrounding city payload is authoritative then. */
+    city?: number;
     turntime: string;
     personal: string | null;
     special?: string | null;

app/game-api/test/battleSimProcessor.test.ts

@@ -237,9 +237,9 @@ describe('battle sim processor', () => {
             datetime: '2026-01-01 00:00:00',
             avgWar: 1,
             phase: 2,
-            killed: 625,
-            maxKilled: 625,
-            minKilled: 625,
+            killed: 626,
+            maxKilled: 626,
+            minKilled: 626,
             dead: 1000,
             maxDead: 1000,
             minDead: 1000,
@@ -267,6 +267,30 @@ describe('battle sim processor', () => {
         expect(result.order).toEqual([2]);
     });
 
+    it('uses the legacy defence training threshold when ordering defenders', () => {
+        const payload = buildPayload('reorder');
+        payload.defenderGenerals[0]!.defence_train = 101;
+
+        const result = processBattleSimJob(payload);
+
+        expect(result.result).toBe(true);
+        expect(result.order).toEqual([]);
+    });
+
+    it('keeps current city separate from the officer assignment city', () => {
+        const localOfficer = buildPayload('battle');
+        localOfficer.attackerGeneral.city = localOfficer.attackerCity.city;
+        const remoteOfficer = buildPayload('battle');
+        remoteOfficer.attackerGeneral.city = remoteOfficer.attackerCity.city;
+        remoteOfficer.attackerGeneral.officer_city = 99;
+
+        const local = processBattleSimJob(localOfficer);
+        const remote = processBattleSimJob(remoteOfficer);
+
+        expect(local.killed).toBeGreaterThan(remote.killed ?? 0);
+        expect(local).not.toEqual(remote);
+    });
+
     it('executes crew trigger handlers in simulator battles', () => {
         const payload = buildPayload('battle');
         payload.unitSet.crewTypes![0]!.phaseSkillTrigger = ['che_선제사격시도', 'che_선제사격발동'];