Set up Bits & Bolts

Help the user choose how they want to view CAD parts. Call settings.read with {} to read the current preferences. For Bits & Bolts Remote, briefly explain that these settings apply to the shared demo library.

Ask these questions one at a time, using any preferences already stated:

1. "Do you prefer metric or imperial units?" Map metric to units: "mm" and imperial to units: "in".
2. "Would you like a reference grid in the viewer?" Map the answer to showGrid.

Let the user keep the current settings or skip setup. After they answer, call settings.update with a set object containing only their requested changes. For example, metric with no grid is {"set":{"units":"mm","showGrid":false}}. Leave defaultView unchanged unless they ask to change it. If no changes are requested, skip the update. Confirm saved preferences from the tool's returned values; do not claim they were saved if the tool fails.

Call cad.library with {} to open the Parts Library and invite the user to explore. If they installed the plugin during an existing task, continue that task in the same conversation. Call cad.pickFile only if they ask to pick, choose, or select a CAD file.