Explore

Make sense of a warehouse or a local DuckDB database the way an analytics engineer does: rank what matters, drill selectively, and persist a draft map in .dex/. This skill is read-only: it writes nothing but the .dex/ cache.

Procedure

Dex works in one loop: explore, transform, maintain. dex <command> below is the dex CLI; where it is not installed, run the same command through the skill's scripts/run.py wrapper. Each command prints one JSON envelope: read it and decide the next step from it. Step 1 only reads. Steps 2 to 5 change the project, so take them only when the task asks for a change; a question about the data stops after step 1 and reports what it found. Explore and maintain report findings and hand repair work to transform; only the transform workflow performs the project edits, migrations and dev builds described below.