The usage reading flattens the session, weekly and sonnet windows each with
its reset time, keeps it beside the licence with when it was read, and says
it as usage.read; a failed answer keeps the last percentages and writes the
vendor's status and reason. A licence's room is 100 less the higher of its
session and weekly windows, known only for a subscription read within
usage_stale_minutes whose refresh is healthy; an API key's is never known.
Builds: design 39 bus-and-switch §24, §25, §48, §2
Claude-Session: https://claude.ai/code/session_01NcbgfHb9d4T9nq5Q6WqdiJ
jschoubben
6cf98386e9