Read ~/.kimi-code credentials directly and poll api.kimi.com
/coding/v1/usages for the weekly quota and rate-limit windows,
mirroring the existing Codex/Claude quota services.
- New KimiSubscriptionService with lenient decoding (string/number
values, enum-style time units, derived used from remaining) and
429 backoff
- Quota chip on the Kimi Code tab, Plan insight, and a Kimi tab in
Settings with connect/disconnect
- Independent refresh cadence anchor so Kimi-only setups don't poll
on every payload tick
- Expired tokens surface as terminal with automatic recovery once
the CLI refreshes the credential file
- Keep insights visible for quota-capable providers on empty days
- Widen Settings so six tabs don't collapse into the overflow menu
