Navigation & File Management
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These commands provide a filesystem-like interface inside Celebi.

* ``ls`` – List directory contents
* ``cd`` – Change directory
* ``mkdir`` – Create a directory
* ``cp`` – Copy files or directories
* ``mv`` – Move or rename files or directories
* ``rm`` – Remove files or directories
* ``cat`` – Display file contents
* ``ls-projects`` – List available projects
* ``cd-project`` – Switch active project