fix: repair existing test failures

app/game-engine/src/auction/bidder.ts

@@ -27,6 +27,7 @@ interface AuctionRow {
     detail: unknown;
     status: AuctionStatus;
     closeAt: Date;
+    latestEventId: string;
 }
 
 interface AuctionBidRow {
@@ -101,7 +102,8 @@ const loadAuction = async (prisma: QueryClient, auctionId: number): Promise<Auct
                 host_general_id as "hostGeneralId",
                 detail,
                 status,
-                close_at as "closeAt"
+                close_at as "closeAt",
+                latest_event_id as "latestEventId"
             FROM auction
             WHERE id = ${auctionId}
             FOR UPDATE
@@ -375,6 +377,8 @@ export const createAuctionBidder = async (options: {
                         `
                     );
 
+                    // 같은 논리 tick의 연속 입찰은 시각이 같으므로, UUID 정렬이 아니라
+                    // 읽어 둔 이벤트 ID를 버전 토큰으로 사용해 경합만 거절한다.
                     const updated = await tx.$executeRaw(
                         GamePrisma.sql`
                             UPDATE auction
@@ -385,10 +389,7 @@ export const createAuctionBidder = async (options: {
                                 updated_at = ${eventAt}
                             WHERE id = ${command.auctionId}
                               AND status = 'OPEN'
-                              AND (
-                                latest_event_at < ${eventAt}
-                                OR (latest_event_at = ${eventAt} AND latest_event_id < ${eventId})
-                              )
+                              AND latest_event_id = ${auction.latestEventId}
                         `
                     );
 

app/game-engine/src/turn/commandRegistry.ts

@@ -301,6 +301,7 @@ const zNpcPossessGeneral = z
         ownerLegacyPenalty: zRecord.optional(),
         generalId: z.number().int().positive(),
         tokenNonce: z.number().int().nonnegative(),
+        acceptedGameAt: z.string().refine(isCanonicalIsoTimestamp).optional(),
     })
     .strict();
 

app/game-engine/src/turn/npcPossessionService.ts

@@ -460,6 +460,7 @@ export const possessNpcGeneral = async (options: {
     acceptedAt: Date;
 }): Promise<{ ok: true; generalId: number }> => {
     const { db, world, worldState, userId, generalId, acceptedAt } = options;
+    // queue 대기 중 만료된 token도 enqueue 시점에는 유효했으므로 저장된 논리 수락 시각으로 다시 검증한다.
     const tokenAcceptedAt = truncateToSeconds(acceptedAt);
     requireNpcPossessionWorld(worldState);
     await lockNpcPossession(db, userId);

app/game-engine/src/turn/worldCommandHandler.ts

@@ -294,7 +294,9 @@ async function handleNpcPossessGeneral(
         throw new Error('NPC possession world state is missing.');
     }
     const operationalAcceptedAt = await resolveCommandAcceptedAt(db, command);
-    const acceptedAt = ctx.world.getGameNow(operationalAcceptedAt);
+    const acceptedAt = command.acceptedGameAt
+        ? new Date(command.acceptedGameAt)
+        : ctx.world.getGameNow(operationalAcceptedAt);
     try {
         return {
             type: 'npcPossessGeneral',