test: validate Raijin command routes

[TorinAsakura]

Таска

• Refs [Bug] Standard Raijin command routes fail under PnP and current runtime raijin#674
• Test-only consumer validation PR; it must not close the Raijin issue

Как проверять

Основной сценарий

1. Контекст: atls/shared Checks workflow on the legacy build/upgrade-next-latest consumer branch
   Действие: open the pull request and let GitHub Actions run
   Ожидаемый результат: regular Raijin command routes run through yarn; any remaining failure should be an existing Serenity migration blocker, not a Corepack/PnP command-route failure

Дополнительный сценарий

1. Контекст: local legacy consumer validation with the Raijin #715 CLI bundle
   Действие: run the standard project commands until the first consumer blocker
   Ожидаемый результат: yarn install --immutable and yarn check complete through the Raijin route; yarn typecheck may still fail on existing legacy TypeScript errors

Пруфы

• Local pass: yarn install --immutable
• Local pass: yarn check
• Legacy codebase blocker, not a Raijin workaround target: yarn typecheck fails on existing TS7006 implicit-any errors, for example ui/utils/src/getElementSize.ts:9:32
• No observed failure in this run matched Corepack, corepack, Qualified path resolution failed, raw TypeScript decorator parsing, or the previous renderer --no-lint route