WPB-23792 public setting for nomad profiles

[battermann]

https://wearezeta.atlassian.net/browse/WPB-23792

Checklist

• Add a new entry in an appropriate subdirectory of changelog.d
• Read and follow the PR guidelines

[Copilot]

Pull request overview

Adds a new public system setting to advertise “nomad profiles” support via Brig’s system settings endpoint, and updates integration tests + configuration docs/templates accordingly.

Changes:

• Extend Brig settings/config (optSettings) with an optional setNomadProfiles flag and expose it via /system/settings/unauthorized.
• Update Brig’s system settings handlers and wire-api schema to include the new public field.
• Move/replace old Brig integration tests with new integration/test coverage and update cabal/module lists.

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
services/brig/test/integration/Run.hs	Removes the old SystemSettings integration tests from Brig’s integration runner.
services/brig/test/integration/API/SystemSettings.hs	Deletes legacy SystemSettings test module.
services/brig/src/Brig/Options.hs	Adds nomadProfiles :: Maybe Bool to Brig settings (configurable via setNomadProfiles).
services/brig/src/Brig/API/Public.hs	Extends system settings responses and refactors handlers to reuse internal construction.
services/brig/brig.cabal	Drops removed test module from the integration executable.
libs/wire-api/src/Wire/API/SystemSettings.hs	Adds nomadProfiles to the public schema and renames the Haskell field for restrict-user-creation.
integration/test/Test/SystemSettings.hs	Adds new integration tests validating public/internal system settings behavior.
integration/test/API/Brig.hs	Adds API helpers for the system settings endpoints.
integration/integration.cabal	Registers the new Test.SystemSettings module.
docs/src/developer/reference/config-options.md	Documents the new setNomadProfiles config option.
charts/brig/templates/configmap.yaml	Renders setNomadProfiles into brig.yaml when configured.
changelog.d/2-features/WPB-23792	Changelog entry for the new public setting.

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[Copilot]

Pull request overview

Copilot reviewed 12 out of 12 changed files in this pull request and generated 4 comments.

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[blackheaven]

Can we have a dedicated data-type for this? Or are least a newtype?

[battermann]

What would we gain from that?

[blackheaven]

Today, that would avoid ambiguity/the necessity to go through this comment.

Eventually, I think it will help with refactorings.

[battermann]

That comment was a suggestion from copilot. I actually regret have accepted it.
It's just a setting for clients. It's optional because it is not needed in 99% of the environments.
True means that nomad profiles are enabled, that's all.
I would not introduce a type for it, we can still do that if we think it has become useful later.
This is following the same pattern as other settings.