docs(custom-models): revamp group page for new org structure

| [AI Framework](/handbook/engineering/ai/ai-framework/) | Abstraction Layer / AI Gateway for LLM integration to the application (GitLab Chat, Code Suggestions and other AI capabilities) |

| [AI Framework](/handbook/engineering/ai/ai-framework/) (formerly Model Validation) | Custom feature evaluators, evaluation support, automated evaluation tooling |

| [Duo Chat](/handbook/engineering/ai/duo-chat/)  | GitLab Chat for VS Code and WebIDE  |

| [Custom Models](/handbook/engineering/ai/custom-models/) | Model Selection (model lifecycle, selection engine & UI) / Health & Connectivity (Duo Health Check, setup, connectivity) / Gateway Services (Prompt Registry, Events tracking, AIGW billing) |

| [Editor Extensions: VS Code](/handbook/engineering/ai/editor-extensions-vscode/) | Maintains the GitLab Workflow VS Code Extension ([maintainers](https://gitlab-org.gitlab.io/gitlab-roulette/?currentProject=gitlab-vscode-extension&mode=show&hidden=reviewer)) & [Web IDE](https://gitlab.com/gitlab-org/gitlab-web-ide) extensions and the [language server](https://gitlab.com/groups/gitlab-org/-/epics/2431). Also contributes with UX improvements for Code Suggestions within GitLab Workflow. |

| [Editor Extensions: Multi-Platform](/handbook/engineering/ai/editor-extensions-multi-platform/) | <ul><li>[JetBrains](https://gitlab.com/gitlab-org/editor-extensions/gitlab-jetbrains-plugin), [Neovim](https://gitlab.com/gitlab-org/editor-extensions/gitlab.vim) & [Visual Studio](https://gitlab.com/gitlab-org/editor-extensions/gitlab-visual-studio-extension) editor extensions</li> <li>Co-owns [Language Server](https://gitlab.com/gitlab-org/editor-extensions/gitlab-lsp) with [Editor Extensions: VS Code](/handbook/engineering/ai/editor-extensions-vscode/) </li><li>Duo CLI (Ideation/MVC phase)</li></ul>  |

| [Global Search](/handbook/engineering/ai/search/) | Abstraction Layer / Vector Storage / Semantic |