feat: add Node SSR deployment transaction record

internal/transaction/store.go

@@ -17,7 +17,7 @@ import (
 	"github.com/ncruces/go-sqlite3/driver"
 )
 
-const schemaVersion = 2
+const schemaVersion = 3
 
 // schemaV1 SQLite 数据库的首版 schema，定义事务、步骤与事件三张核心表。
 //
@@ -95,6 +95,21 @@ CREATE TABLE backend_container_deployment (
 PRAGMA user_version = 2;
 `
 
+// schemaV3 新增 Node SSR 容器部署单例表。
+const schemaV3 = `
+CREATE TABLE node_ssr_container_deployment (
+    singleton_id INTEGER PRIMARY KEY CHECK (singleton_id = 1),
+    active_port INTEGER NOT NULL CHECK (active_port IN (18910, 28910)),
+    container_name TEXT NOT NULL,
+    image_digest TEXT NOT NULL,
+    container_id TEXT NOT NULL,
+    transaction_id TEXT NOT NULL REFERENCES transactions(id),
+    updated_at TEXT NOT NULL
+) STRICT;
+
+PRAGMA user_version = 3;
+`
+
 // Store 服务端 SQLite 事务记录。一个进程只应创建一个 Store。
 //
 // 它封装了底层 *sql.DB，并把单连接访问（MaxOpenConns/MaxIdleConns 均为 1）作为
@@ -222,6 +237,8 @@ func migrate(ctx context.Context, db *sql.DB) error {
 			script = schemaV1
 		case 2:
 			script = schemaV2
+		case 3:
+			script = schemaV3
 		default:
 			return fmt.Errorf("sqlite migration script is missing for version %d", nextVersion)
 		}