docs/setup.en.md

docs/setup.ja.md

locales/ja-JP.yml

src/client/app/admin/views/instance.vue

src/client/app/common/views/components/signup.vue

src/config/types.ts

src/models/meta.ts

src/server/api/endpoints/admin/update-meta.ts

src/server/api/endpoints/meta.ts

src/server/api/private/signup.ts