diff --git a/packages/infra/package.json b/packages/infra/package.json
index 29f566f..204493e 100644
--- a/packages/infra/package.json
+++ b/packages/infra/package.json
@@ -15,6 +15,8 @@
         "typecheck": "tsc -b",
         "prisma:generate:game": "prisma generate --schema prisma/game.prisma",
         "prisma:generate:gateway": "prisma generate --schema prisma/gateway.prisma",
+        "prisma:migrate:deploy:game": "prisma migrate deploy --schema prisma/game.prisma",
+        "prisma:migrate:status:game": "prisma migrate status --schema prisma/game.prisma",
         "prisma:db:push:game": "prisma db push --schema prisma/game.prisma",
         "prisma:db:push:gateway": "prisma db push --schema prisma/gateway.prisma"
     },
diff --git a/packages/infra/prisma/migrations/20250101000000_init_game_schema/migration.sql b/packages/infra/prisma/migrations/20250101000000_init_game_schema/migration.sql
new file mode 100644
index 0000000..d634e9e
--- /dev/null
+++ b/packages/infra/prisma/migrations/20250101000000_init_game_schema/migration.sql
@@ -0,0 +1,251 @@
+-- Baseline tables that predate the incremental Prisma migration history.
+--
+-- IF NOT EXISTS is intentional: existing installations were originally
+-- provisioned with `prisma db push` and already own these objects. This
+-- migration must be safe both for those databases and for a genuinely empty
+-- database running the full migration chain.
+
+DO $$
+BEGIN
+    CREATE TYPE "LogScope" AS ENUM ('SYSTEM', 'NATION', 'GENERAL', 'USER');
+EXCEPTION
+    WHEN duplicate_object THEN NULL;
+END
+$$;
+
+DO $$
+BEGIN
+    CREATE TYPE "LogCategory" AS ENUM (
+        'HISTORY',
+        'SUMMARY',
+        'ACTION',
+        'BATTLE_BRIEF',
+        'BATTLE_DETAIL',
+        'USER'
+    );
+EXCEPTION
+    WHEN duplicate_object THEN NULL;
+END
+$$;
+
+CREATE TABLE IF NOT EXISTS "world_state" (
+    "id" SERIAL NOT NULL,
+    "scenario_code" TEXT NOT NULL,
+    "current_year" INTEGER NOT NULL,
+    "current_month" INTEGER NOT NULL,
+    "tick_seconds" INTEGER NOT NULL,
+    "config" JSONB NOT NULL DEFAULT '{}'::jsonb,
+    "meta" JSONB NOT NULL DEFAULT '{}'::jsonb,
+    "updated_at" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "world_state_pkey" PRIMARY KEY ("id")
+);
+
+CREATE TABLE IF NOT EXISTS "nation" (
+    "id" INTEGER NOT NULL,
+    "name" TEXT NOT NULL,
+    "color" TEXT NOT NULL,
+    "capital_city_id" INTEGER,
+    "gold" INTEGER NOT NULL DEFAULT 0,
+    "rice" INTEGER NOT NULL DEFAULT 0,
+    "tech" DOUBLE PRECISION NOT NULL DEFAULT 0,
+    "level" INTEGER NOT NULL DEFAULT 0,
+    "type_code" TEXT NOT NULL DEFAULT 'che_중립',
+    "meta" JSONB NOT NULL DEFAULT '{}'::jsonb,
+
+    CONSTRAINT "nation_pkey" PRIMARY KEY ("id")
+);
+
+CREATE TABLE IF NOT EXISTS "city" (
+    "id" INTEGER NOT NULL,
+    "name" TEXT NOT NULL,
+    "level" INTEGER NOT NULL,
+    "nation_id" INTEGER NOT NULL DEFAULT 0,
+    "supply_state" INTEGER NOT NULL DEFAULT 1,
+    "front_state" INTEGER NOT NULL DEFAULT 0,
+    "pop" INTEGER NOT NULL,
+    "pop_max" INTEGER NOT NULL,
+    "agri" INTEGER NOT NULL,
+    "agri_max" INTEGER NOT NULL,
+    "comm" INTEGER NOT NULL,
+    "comm_max" INTEGER NOT NULL,
+    "secu" INTEGER NOT NULL,
+    "secu_max" INTEGER NOT NULL,
+    "trust" INTEGER NOT NULL DEFAULT 0,
+    "trade" INTEGER NOT NULL DEFAULT 100,
+    "def" INTEGER NOT NULL,
+    "def_max" INTEGER NOT NULL,
+    "wall" INTEGER NOT NULL,
+    "wall_max" INTEGER NOT NULL,
+    "region" INTEGER NOT NULL,
+    "conflict" JSONB NOT NULL DEFAULT '{}'::jsonb,
+    "meta" JSONB NOT NULL DEFAULT '{}'::jsonb,
+
+    CONSTRAINT "city_pkey" PRIMARY KEY ("id")
+);
+
+CREATE TABLE IF NOT EXISTS "general" (
+    "id" INTEGER NOT NULL,
+    "user_id" TEXT,
+    "name" TEXT NOT NULL,
+    "nation_id" INTEGER NOT NULL DEFAULT 0,
+    "city_id" INTEGER NOT NULL DEFAULT 0,
+    "troop_id" INTEGER NOT NULL DEFAULT 0,
+    "npc_state" INTEGER NOT NULL DEFAULT 0,
+    "affinity" INTEGER,
+    "born_year" INTEGER NOT NULL DEFAULT 180,
+    "dead_year" INTEGER NOT NULL DEFAULT 300,
+    "picture" TEXT,
+    "image_server" INTEGER NOT NULL DEFAULT 0,
+    "leadership" INTEGER NOT NULL DEFAULT 50,
+    "strength" INTEGER NOT NULL DEFAULT 50,
+    "intel" INTEGER NOT NULL DEFAULT 50,
+    "injury" INTEGER NOT NULL DEFAULT 0,
+    "experience" INTEGER NOT NULL DEFAULT 0,
+    "dedication" INTEGER NOT NULL DEFAULT 0,
+    "officer_level" INTEGER NOT NULL DEFAULT 0,
+    "gold" INTEGER NOT NULL DEFAULT 1000,
+    "rice" INTEGER NOT NULL DEFAULT 1000,
+    "crew" INTEGER NOT NULL DEFAULT 0,
+    "crew_type_id" INTEGER NOT NULL DEFAULT 0,
+    "train" INTEGER NOT NULL DEFAULT 0,
+    "atmos" INTEGER NOT NULL DEFAULT 0,
+    "weapon_code" TEXT NOT NULL DEFAULT 'None',
+    "book_code" TEXT NOT NULL DEFAULT 'None',
+    "horse_code" TEXT NOT NULL DEFAULT 'None',
+    "item_code" TEXT NOT NULL DEFAULT 'None',
+    "turn_time" TIMESTAMP(3) NOT NULL,
+    "recent_war_time" TIMESTAMP(3),
+    "age" INTEGER NOT NULL DEFAULT 20,
+    "start_age" INTEGER NOT NULL DEFAULT 20,
+    "personal_code" TEXT NOT NULL DEFAULT 'None',
+    "special_code" TEXT NOT NULL DEFAULT 'None',
+    "special2_code" TEXT NOT NULL DEFAULT 'None',
+    "last_turn" JSONB NOT NULL DEFAULT '{}'::jsonb,
+    "meta" JSONB NOT NULL DEFAULT '{}'::jsonb,
+    "penalty" JSONB NOT NULL DEFAULT '{}'::jsonb,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updated_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "general_pkey" PRIMARY KEY ("id")
+);
+
+CREATE TABLE IF NOT EXISTS "message" (
+    "id" SERIAL NOT NULL,
+    "mailbox" INTEGER NOT NULL,
+    "type" TEXT NOT NULL,
+    "src" INTEGER NOT NULL,
+    "dest" INTEGER NOT NULL,
+    "time" TIMESTAMP(3) NOT NULL,
+    "valid_until" TIMESTAMP(3) NOT NULL,
+    "message" JSONB NOT NULL,
+
+    CONSTRAINT "message_pkey" PRIMARY KEY ("id")
+);
+
+CREATE TABLE IF NOT EXISTS "troop" (
+    "troop_leader" INTEGER NOT NULL,
+    "nation" INTEGER NOT NULL,
+    "name" TEXT NOT NULL,
+
+    CONSTRAINT "troop_pkey" PRIMARY KEY ("troop_leader")
+);
+
+CREATE TABLE IF NOT EXISTS "general_turn" (
+    "id" SERIAL NOT NULL,
+    "general_id" INTEGER NOT NULL,
+    "turn_idx" INTEGER NOT NULL,
+    "action_code" TEXT NOT NULL,
+    "arg" JSONB NOT NULL DEFAULT '{}'::jsonb,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "general_turn_pkey" PRIMARY KEY ("id")
+);
+
+CREATE UNIQUE INDEX IF NOT EXISTS "general_turn_general_id_turn_idx_key"
+    ON "general_turn"("general_id", "turn_idx");
+
+CREATE TABLE IF NOT EXISTS "nation_turn" (
+    "id" SERIAL NOT NULL,
+    "nation_id" INTEGER NOT NULL,
+    "officer_level" INTEGER NOT NULL,
+    "turn_idx" INTEGER NOT NULL,
+    "action_code" TEXT NOT NULL,
+    "arg" JSONB NOT NULL DEFAULT '{}'::jsonb,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "nation_turn_pkey" PRIMARY KEY ("id")
+);
+
+CREATE UNIQUE INDEX IF NOT EXISTS "nation_turn_nation_id_officer_level_turn_idx_key"
+    ON "nation_turn"("nation_id", "officer_level", "turn_idx");
+
+CREATE TABLE IF NOT EXISTS "diplomacy" (
+    "id" SERIAL NOT NULL,
+    "src_nation_id" INTEGER NOT NULL,
+    "dest_nation_id" INTEGER NOT NULL,
+    "state_code" INTEGER NOT NULL,
+    "term" INTEGER NOT NULL DEFAULT 0,
+    "is_dead" BOOLEAN NOT NULL DEFAULT false,
+    "is_showing" BOOLEAN NOT NULL DEFAULT true,
+    "meta" JSONB NOT NULL DEFAULT '{}'::jsonb,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "diplomacy_pkey" PRIMARY KEY ("id")
+);
+
+CREATE UNIQUE INDEX IF NOT EXISTS "diplomacy_src_nation_id_dest_nation_id_key"
+    ON "diplomacy"("src_nation_id", "dest_nation_id");
+
+CREATE TABLE IF NOT EXISTS "event" (
+    "id" SERIAL NOT NULL,
+    "target_code" TEXT NOT NULL,
+    "priority" INTEGER NOT NULL DEFAULT 0,
+    "condition" JSONB NOT NULL DEFAULT '{}'::jsonb,
+    "action" JSONB NOT NULL DEFAULT '{}'::jsonb,
+    "meta" JSONB NOT NULL DEFAULT '{}'::jsonb,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "event_pkey" PRIMARY KEY ("id")
+);
+
+CREATE TABLE IF NOT EXISTS "log_entry" (
+    "id" SERIAL NOT NULL,
+    "scope" "LogScope" NOT NULL,
+    "category" "LogCategory" NOT NULL,
+    "sub_type" TEXT,
+    "year" INTEGER NOT NULL,
+    "month" INTEGER NOT NULL,
+    "text" TEXT NOT NULL,
+    "general_id" INTEGER,
+    "nation_id" INTEGER,
+    "user_id" INTEGER,
+    "meta" JSONB NOT NULL DEFAULT '{}'::jsonb,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "log_entry_pkey" PRIMARY KEY ("id")
+);
+
+CREATE INDEX IF NOT EXISTS "log_entry_scope_category_id_idx"
+    ON "log_entry"("scope", "category", "id");
+CREATE INDEX IF NOT EXISTS "log_entry_general_id_category_id_idx"
+    ON "log_entry"("general_id", "category", "id");
+CREATE INDEX IF NOT EXISTS "log_entry_nation_id_category_id_idx"
+    ON "log_entry"("nation_id", "category", "id");
+CREATE INDEX IF NOT EXISTS "log_entry_user_id_category_id_idx"
+    ON "log_entry"("user_id", "category", "id");
+
+CREATE TABLE IF NOT EXISTS "error_log" (
+    "id" SERIAL NOT NULL,
+    "category" TEXT NOT NULL,
+    "source" TEXT,
+    "message" TEXT NOT NULL,
+    "trace" TEXT,
+    "context" JSONB NOT NULL DEFAULT '{}'::jsonb,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "error_log_pkey" PRIMARY KEY ("id")
+);
+
+CREATE INDEX IF NOT EXISTS "error_log_category_id_idx"
+    ON "error_log"("category", "id");
diff --git a/packages/infra/prisma/migrations/20260726191000_add_auction_bid_meta/migration.sql b/packages/infra/prisma/migrations/20260726191000_add_auction_bid_meta/migration.sql
new file mode 100644
index 0000000..b49894c
--- /dev/null
+++ b/packages/infra/prisma/migrations/20260726191000_add_auction_bid_meta/migration.sql
@@ -0,0 +1,5 @@
+-- The Prisma model and auction runtime persist bid metadata, but the original
+-- auction migration predates that field. Existing db-push installations may
+-- already have it, so keep this reconciliation migration idempotent.
+ALTER TABLE "auction_bid"
+    ADD COLUMN IF NOT EXISTS "meta" JSONB NOT NULL DEFAULT '{}'::jsonb;
diff --git a/packages/infra/prisma/migrations/README.md b/packages/infra/prisma/migrations/README.md
new file mode 100644
index 0000000..0d2387b
--- /dev/null
+++ b/packages/infra/prisma/migrations/README.md
@@ -0,0 +1,38 @@
+# Game database migrations
+
+`game.prisma`의 운영·검증 DB는 이 디렉터리의 migration chain으로
+준비한다. 새 환경을 `prisma db push`만으로 만들지 않는다.
+
+## 적용
+
+Git에서 제외된 환경 파일 또는 secret 주입으로 `DATABASE_URL`을 설정한 뒤
+저장소 루트에서 실행한다.
+
+```bash
+pnpm --filter @sammo-ts/infra prisma:migrate:deploy:game
+pnpm --filter @sammo-ts/infra prisma:migrate:status:game
+```
+
+`20250101000000_init_game_schema`는 증분 migration 이력이 생기기 전에
+`db push`로 제공되던 핵심 game table의 baseline이다. 기존 설치에는
+이미 같은 object가 있으므로 type, table과 index 생성은 idempotent하게
+작성했다. 새 migration은 이 baseline 또는 기존 migration 파일을
+수정하지 말고 뒤에 추가한다.
+
+## 빈 DB 검증
+
+다른 개발 DB나 volume을 재사용하지 말고 전용 임시 PostgreSQL database를
+만든다. 위 deploy 명령을 한 번 실행해 전체 migration이 성공하는지,
+두 번째 실행이 `No pending migrations to apply`인지 확인한다. 최소한
+다음도 확인한다.
+
+- `_prisma_migrations`의 모든 행이 완료 상태
+- `world_state`, `nation`, `city`, `general`, `message`, `troop`,
+  `general_turn`, `nation_turn`, `diplomacy`, `event`, `log_entry`,
+  `error_log` 존재
+- `nation.chief_general_id` 존재
+- `city.trade` nullable, `city.trust` REAL
+- `auction_bid.meta` JSONB, NOT NULL
+
+검증 뒤에는 이름을 확인한 임시 database와 role만 제거한다. 공유 개발
+database나 Compose volume을 삭제하지 않는다.