* feat: add invoice URL to proration and test seed scripts - Add invoiceUrl field to MonthlyProration schema - Update billing service to return hosted_invoice_url after finalizing - Save invoice URL when creating proration invoices - Add seed script for testing proration with real Stripe data - Add cleanup script for test data removal Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * feat: add due invoice banner and invitation blocking for orgs - Add DueInvoiceBanner component showing overdue prorations - Add DueInvoiceService for checking blocking status and banner data - Block invitations when proration invoices are 7+ days overdue - Allow sub-team invites for existing org members (exception) - Show banner to users with billing management permissions - Link directly to Stripe invoice URL when available Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * fix: set subscriptionId in team metadata in seed script The seed script was not setting subscriptionId on the team metadata, causing checkIfOrgNeedsUpgrade to treat the org as needing upgrade and showing the "trialing" banner. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * push trigger test to script * fix mocks --------- Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>