Drill: Command palette: ⌘K palette with keyboard nav (↑↓ Enter Esc), grouped results, fuzzy match, footer hints. Must work without mouse.

Interpretation: Theatre lighting board operator console (The Tempest, 36 dimmers / 16 cues / 8 playbacks) — a domain where keyboard-first operation is literal practice. Argument-mode grammar: Tab opens commands into steppers (verb → channel → level) with live before→after level previews carrying derived rig-load deltas in kW; destructive blackout uses armed two-step confirm. Warm paper console desaturates under the palette; mobile renders as a bottom sheet with scope chips replacing keyboard chrome.