完成流水线控制器重构和相关功能改进

apps/server/prisma/schema.prisma

@@ -60,9 +60,8 @@ model Pipeline {
 model Step {
   id          Int      @id @default(autoincrement())
   name        String
-  description String?
   order       Int
-  status      String?
+  script      String   // 执行的脚本命令
   valid       Int      @default(1)
   createdAt   DateTime @default(now())
   updatedAt   DateTime @updatedAt