Persist nextBillingDate on subscription create/update; unset on
cancel or downgrade to free. Account page displays the cached
date and lazily refreshes from Helcim when the cached value is
within 24h of now (or missing).
Replace tier-based plan lookup with cadence-keyed lookup, compute
recurringAmount via getTierAmount, persist billingCadence on member.
Delete both manual-fallback blocks; Helcim failure now surfaces as 500.
Moves updateHelcimSubscription to the live-verified wrapped shape
(PATCH /subscriptions { subscriptions: [{ id, ...payload }] }), adds a prior-
status check so sendWelcomeEmail only fires on pending_payment to active
transitions, short-circuits get-or-create-customer when a valid
helcimCustomerId is already on file, and replaces member.save() Slack-status
writes with findByIdAndUpdate({ runValidators: false }) to avoid save-time
validator pitfalls.
Adds schema-based input validation across helcim, events, members,
series, admin, and updates API endpoints. Removes the peer-support
debug test endpoint. Adds validation test coverage.
Auth: Add requireAuth/requireAdmin guards with JWT cookie verification,
member status checks (suspended/cancelled = 403), and admin role
enforcement. Apply to all admin, upload, and payment endpoints. Add
role field to Member model.
CSRF: Double-submit cookie middleware with client plugin. Exempt
webhook and magic-link verify routes.
Headers: X-Content-Type-Options, X-Frame-Options, X-XSS-Protection,
Referrer-Policy, Permissions-Policy on all responses. HSTS and CSP
(Helcim/Cloudinary/Plausible sources) in production only.
Rate limiting: Auth 5/5min, payment 10/min, upload 10/min, general
100/min via rate-limiter-flexible, keyed by client IP.
XSS: DOMPurify sanitization on marked() output with tag/attr
allowlists. escapeHtml() utility for email template interpolation.
Anti-enumeration: Login returns identical response for existing and
non-existing emails. Remove 404 handling from login UI components.
Mass assignment: Remove helcimCustomerId from profile allowedFields.
Session: 7-day token expiry, refresh endpoint, httpOnly+secure cookies.
Environment: Validate required secrets on startup via server plugin.
Remove JWT_SECRET hardcoded fallback.
