Phase 5 billing: account-based annual sub + tag SKUs + SMS pool + tag lifecycle
- Schema: plans, orders subscription cols + plan_id + period_started_at,
billing_events log, users.stripe_id + sms_credits, products.price_aud
(db/schema.sql + Laravel migration, idempotent)
- Laravel/Cashier: Billable User, checkout (annual sub + one-off SKUs with
Managed Payments tax_code), webhook controller (signature-verified,
idempotent, BILLING_ENABLED kill-switch), account tag transitions,
nightly reconcile, Stripe portal link, PlanResource + billing dashboard
- Go frontend: account-level gating (paid sub required), SMS pool
(included 50/yr + credits, drawn after included), plan caps replace
constants, 60s plan cache (credits fresh), 25-tag cap (plan max_tags)
- BillingSeeder: personal plan + 3 SKUs + dev paid orders
- Verified test-mode e2e: subscribe/paid/active/alerts, pool exhaust +
credits resume, lapsed/suspended, cancelled/closed, recover/active,
webhook idempotency, 25-cap, one-off SKUs, replacement, kill-switch,
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Sam Rolfe
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