69197e11ae
Wire the Stripe lifecycle into TenantsService (best-effort, gated on stripe.enabled): on create open a Stripe customer and, for a priced plan with seats >= 1, lazily create a Stripe Product+Price (persisted to Price.stripePriceIds[currency]) and a send_invoice subscription; mirror seat changes to the subscription quantity; pause/resume on suspend/resume; cancel on delete. A Stripe failure never blocks the tenant — the local Subscription stays the source of truth for derived MRR.