chore: 将 next-env.d.ts 加入 .gitignore

该文件由 Next.js 自动生成，不应纳入版本控制。

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitignore

@@ -7,6 +7,7 @@ dist
 .next
 .turbo
 out
+next-env.d.ts
 
 # Environment
 .env.local

apps/web/next-env.d.ts

@@ -1,6 +0,0 @@
-/// <reference types="next" />
-/// <reference types="next/image-types/global" />
-import "./.next/dev/types/routes.d.ts";
-
-// NOTE: This file should not be edited
-// see https://nextjs.org/docs/app/api-reference/config/typescript for more information.