refactor(prisma): 统一导入prisma客户端方式

- 所有控制器中从libs/prisma.ts导入prisma替代旧的libs/db.ts
- 规范了step模块中zod验证架构的格式与换行
- 生成Prisma客户端及类型定义文件，包含browser、client、commonInputTypes、enums和内部类文件
- 优化listStepsQuerySchema默认参数与链式调用格式
- 保持代码风格一致，提升可维护性和类型安全性

apps/server/package.json

@@ -12,7 +12,10 @@
   "dependencies": {
     "@koa/cors": "^5.0.0",
     "@koa/router": "^14.0.0",
-    "@prisma/client": "^6.15.0",
+    "@prisma/adapter-better-sqlite3": "^7.0.0",
+    "@prisma/client": "^7.0.0",
+    "better-sqlite3": "^12.4.5",
+    "dotenv": "^17.2.3",
     "koa": "^3.0.1",
     "koa-bodyparser": "^4.4.1",
     "koa-session": "^7.0.2",
@@ -29,7 +32,7 @@
     "@types/koa__cors": "^5.0.0",
     "@types/koa__router": "^12.0.4",
     "@types/node": "^24.3.0",
-    "prisma": "^6.15.0",
+    "prisma": "^7.0.0",
     "tsx": "^4.20.5",
     "typescript": "^5.9.2"
   }