Hide DAP Self-hosted Models if the GitLab Testing Terms Have Not Been Accepted

What does this MR do and why?

As DAP self-hosted models are beta in 18.7, we should only allow for their usage when customers have accepted the GitLab beta testing terms. This MR will hide DAP self-hosted models from all DAP feature settings unless the user has enabled the Self-hosted beta models and features checkbox in the Duo settings page.

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References

Related: https://gitlab.com/gitlab-org/gitlab/-/issues/583038

Screenshots or screen recordings

Before	After
Screen_Recording_2025-12-09_at_4.50.40_pm	Screen_Recording_2025-12-09_at_4.54.07_pm

How to set up and validate locally

Set-up pre-requisites

• An active online cloud or legacy, Ultimate license.

1. Start GDK in self-managed mode GITLAB_SIMULATE_SAAS=0 gdk start
2. Enable the ai_agentic_chat_feature_setting_split and self_hosted_agent_platform feature flag by visiting http://gdk.test:3000/rails/features/
3. Run the Duo Enterprise setup rake task in self-managed mode GITLAB_SIMULATE_SAAS=0 bundle exec 'rake gitlab:duo:setup[duo_enterprise]'
4. Create some DAP compatible self-hosted models by:
   • Navigating to the create self-hosted model page i.e admin/gitlab_duo/self_hosted/models/new
   • Create a self-hosted model. Select GPT for the model family and enter any allowable values for everything else

Validate when DAP self-hosted models should be shown

1. Navigate to the Duo settings page i.e http://gdk.test:3000/admin/gitlab_duo/configuration
2. Enable the Self-hosted beta models and features setting and save changes
3. Navigate to the model selection page i.e http://gdk.test:3000/admin/gitlab_duo/self_hosted
4. Validate that features under the "GitLab Duo Agent Platform" section show the self-hosted model created above in the "Self-hosted models" section in the dropdown

Validate when DAP self-hosted models should not be shown

1. Navigate to the Duo settings page i.e http://gdk.test:3000/admin/gitlab_duo/configuration
2. Disable the Self-hosted beta models and features setting and save changes
3. Navigate to the model selection page i.e http://gdk.test:3000/admin/gitlab_duo/self_hosted
4. Validate that features under the "GitLab Duo Agent Platform" section do not have a "Self-hosted models" section in the dropdown and contains no self-hosted models.

MR acceptance checklist

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