Covers the usage panel: the one-track week (day labels, used and dimmed segments, boundary tick), the duration-shaped headline, the draggable stop for unattended work (offset clamped, no snap-back to stale polls), the enabled/disabled reading and its tooltips, the eager-consumption threshold, the "show all limits" table, and the loud unparseable-week error versus dated stale readings.

## Before writing SPEC.md files

Read https://raw.githubusercontent.com/brillout/sdd/refs/heads/main/sdd.md
