Every request presenting an expired token wrote a token.expired_use
audit row, and RateLimitTokens only applies once a session exists, so a
rejected token was never rate-limited. A looping job with one expired
token could write an unbounded number of audit rows, drowning the real
audit trail.
services.ShouldLogExpiredTokenUse now dedupes to at most one
token.expired_use record per token per minute, mirroring the throttle
TouchAPIToken already uses for last-used. It lives in services rather
than auth because the storage concern belongs beside the token's other
storage-backed state. The first use per window is still recorded, which
is what makes a forgotten job visible.