- Add billing fields to User (isBilling, billingAmount, billingState,
billingStripeSubscriptionId) and OrganizerInvitation (billingAmount)
- Registration: organizer gets billingState="poor" (pending review)
- Admin approval: sets isBilling=true, billingAmount from form, state="good"
- Invitation: billingAmount from invitation, if 0 then isBilling=false
- ROLE_ROOT accounts: billing free (amount=0, state="good")
- Block Stripe Connect creation and all organizer features if state is
"poor" or "suspendu"
- Hide Stripe configuration section if billing not settled
- Add billing checkout via Stripe subscription with success route
- Webhooks: checkout.session.completed activates billing,
invoice.payment_failed and customer.subscription.deleted suspend
account and disable online events
- Show billing alert on /mon-compte with amount and subscribe button
- Display billing info in invitation email and landing page
- Add email templates for billing activated/failed/cancelled
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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