Documentation quality check: clarify group rule validation

[mintlify]

Summary

Fixes gaps in the include and exclude groups page found during review of English MDX changes from 2026-09-28 to 2026-09-29.

Changes

deploy/exclude-groups.mdx

• Gap: The beta note said deployments fail whenever the rule form is used, which contradicts the rest of the page. Fix: Deployments now fail only until Mintlify enables rules for the deployment. This matches the server message groups rules with includes or excludes are not enabled for this deployment.
• Gap: The page didn't say what happens when a groups value is invalid. Fix: Added that Mintlify fails the deployment, doesn't update the site, and lists each affected page path.
• Gap: The examples table included groups: [], but the page never explained it. Fix: The validation rules now say groups: [] denies access to everyone. This matches the schema message in auth-edge/page-groups.ts.

Evaluated with no gaps found

• The other changed pages had small additions or style-only edits: desktop.mdx, ai/mintlify-mcp.mdx, assistant/use.mdx, analytics/assistant.mdx, analytics/savings.mdx, editor/review.mdx and deploy/preview-deployments.mdx. Other pages only changed wording, such as "sign in" and "click". Each page still answers its core reader questions.

Open gaps

• deploy/preview-deployments.mdx: I couldn't check the Auth override dashboard labels in the reference repos, so I left them unchanged.

---

Note

Low Risk
Documentation-only wording; no runtime or deployment logic changes in this diff.

Overview
Updates deploy/exclude-groups.mdx so the closed-beta note matches product behavior: deployments fail on rule-form groups only until Mintlify enables the feature for the deployment, not for the entire beta period.

The validation rules section now documents that groups: [] denies everyone, and adds explicit deployment failure behavior when any page has an invalid groups value (no site update; error lists affected paths).

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