Félix Malfait 8896d8e565 docs(codex-plugin): use apply and plan commands (#24512) ...

## Summary

- replace deprecated `twenty dev --once` examples with the bounded
`twenty apply` command
- document `twenty plan` as the read-only preview path
- update the cross-document contract validator
- add a failing fixture for reintroducing the deprecated guidance

## Validation

- `npx nx run twenty-codex-plugin:validate --skip-nx-cache`
- `npx nx run twenty-codex-plugin:test --skip-nx-cache` — 32 passed

Audit source: https://github.com/twentyhq/core-team-issues/issues/2784

<!-- This is an auto-generated description by cubic. -->
<a
href="https://cubic.dev/pr/twentyhq/twenty/pull/24512?utm_source=github"
target="_blank" rel="noopener noreferrer"
data-no-image-dialog="true"><picture><source
media="(prefers-color-scheme: dark)"
srcset="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"><source
media="(prefers-color-scheme: light)"
srcset="https://www.cubic.dev/buttons/review-in-cubic-light.svg"><img
alt="Review in cubic"
src="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"></picture></a>
<!-- End of auto-generated description by cubic. -->

2026-08-21 15:37:02 +02:00

..

validate.spec.js

…