Against real Postgres: ai.usage on /api/auth/me with the measured use and
the estimate, the PUT and its ceiling refusal, an operator lowering the
ceiling over a stored choice, supplementLabel closing on frugal, and the
status invalidator holding a frugal account's sync to one regeneration per
scope a day while a hand entry after six hours goes through. The capability
wiring test now covers supplementLabel.
Refs #1217
