## Summary
- Documents that mono attaches Scale 14d trial + Company Brain after Slack OAuth from `/brain`.
Stacks on #1310. Billing implementation is in mono.
Integrate the new api_max plan ($100/mo, $130 credits) from mono into the
nova web app, mirroring mono's tier semantics.
- Tiers: insert api_max between pro and scale; resolves to Pro-tier for feature gates while displaying as "Max" (queries.ts, use-token-usage)
- Billing page: Max plan card ("Most Popular"), checkout/cancel/invoice wiring; advanced carousel page now 3-up (Max/Scale/Enterprise); Scale builds on Max
- Carousel auto-opens to the page holding the current plan (Max/Scale/ Enterprise users land on their own card instead of Free+Pro)
- Cancel: retention dialog listing what you lose + type-to-confirm "CANCEL"
- Cancel/resume state mirroring console: detect canceledAt-scheduled cancellation, show "Cancelling" pill + "Cancels on {date} · N days left", and a "Resume plan" (uncancel) action
The subscription check on plugins, connections, and usage pages was hardcoded to only look at `api_pro`. Users on scale or enterprise plans saw "Upgrade to Pro" and couldn't create plugin keys or manage connections.
Also, the check only looked at product `status` but not the `allowed` flag from autumn — so users who downgraded but were still in their billing period got locked out early.
Summary
- Migrate from consumer_pro to api_pro billing product across the app
- Enable Nova app for all users (remove feature flag)
- Add credits-based usage tracking with tokens abstraction
