Evergreen farms (pos)

Trial Retention during Provisioning (onboarding.controller.js):
Preserved status: "trialing" and trial period metadata in provisionTenantByRequestId so trial accounts are not prematurely marked as standard paid accounts.
Extended transaction lookup to query both plan_purchase and trial_started transactions.
Zero-Amount Trial Checkout Handling (onboardingWebhook.controller.js):
Extended completeAfterPayment webhook to gracefully process $0.00 Stripe sessions (no_payment_required and zero-amount sessions with an attached trial subscription).