Index and query a local checkout offline with the GitLab Orbit CLI (`orbit`, or `glab orbit`). Reach for it when a question names a symbol or spans code structure. Examples: who calls or extends this, where it is defined, what a file defines, how definitions are distributed. One call replaces many file reads and text greps, including matches in config, templates, and docs. Works on the working tree and unpushed branches, and also searches and reads the project's GitLab. Not a fit: reading one known file, or counts and relationships across GitLab (use the `orbit` skill).