feat: port NPC possession through turn daemon

packages/infra/prisma/game.prisma

@@ -154,7 +154,7 @@ model City {
 
 model General {
   id            Int       @id
-  userId        String?   @map("user_id")
+  userId        String?   @unique(map: "general_user_id_key") @map("user_id")
   name          String
   nationId      Int       @default(0) @map("nation_id")
   cityId        Int       @default(0) @map("city_id")
@@ -211,6 +211,19 @@ model SelectPoolEntry {
   @@map("select_pool")
 }
 
+model NpcSelectionToken {
+  ownerUserId  String   @id @map("owner_user_id")
+  validUntil   DateTime @map("valid_until")
+  pickMoreFrom DateTime @map("pick_more_from")
+  pickResult   Json     @map("pick_result")
+  nonce        Int
+  createdAt    DateTime @default(now()) @map("created_at")
+  updatedAt    DateTime @updatedAt @map("updated_at")
+
+  @@index([validUntil])
+  @@map("select_npc_token")
+}
+
 model GeneralAccessLog {
   id                Int       @id @default(autoincrement())
   generalId         Int       @unique @map("general_id")