fix: keep internal release consumers in sync

[zeno-codebot]

Summary

• add apps/docs to the release-please workspace package set so internal dependency bumps are managed outside packages/*
• include cindor-ui-docs in the linked workspace version group and track it in the release manifest
• add a regression test that fails if any workspace app or package pins an internal Cindor package by exact version without release-please coverage

Testing

• npm run test:one -- scripts/release-please-config.test.ts
• npx eslint scripts/release-please-config.test.ts

Notes

• release-please debug-config was attempted locally, but the CLI insists on checking out main even in local mode, so it is not usable against uncommitted branch changes.