[Wello86]

Summary

Documents how External users who connect through a LiteLLM integration see only the models assigned to their virtual key, not all models in model_list.

Closes EPMCDME-14619.

Changes

• Added Per-User Model Visibility section to the LiteLLM model configuration guide explaining how virtual key models assignments control which models External users see
• Added a reference to chat input settings in the user guide for the model selector
• Added a FAQ entry explaining how to show only some LLM models in the model selector

Testing

• Tested locally with npm start
• All pages render correctly
• Internal links work
• Sidebar navigation works

Quality Checks

• npm run check passes
• No MDX compilation errors
• No raw angle brackets
• Commit messages follow Conventional Commits
• No secrets or credentials in documentation