Add Support Assistant as a foundational chat agent (!237380) · Merge requests · GitLab.org / GitLab

What does this MR do and why?

Add Support Assistant as a foundational chat agent

Promotes the Support Assistant (currently in components/agents-and-flows/stellaflows) to a foundational agent so it appears in the Duo Chat agent selector.

References

Stellaflows source: https://gitlab.com/components/agents-and-flows/stellaflows
Flow config: gitlab-org/modelops/applied-ml/code-suggestions/ai-assist!5606 (merged)

Screenshots or screen recordings

In progress

How to set up and validate locally

Run the existing spec to confirm the new entry passes all structural validations (sequential IDs, unique references, required fields):
```
bundle exec rspec ee/spec/lib/ai/foundational_chat_agents_definitions_spec.rb
```

MR acceptance checklist

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