Build Stripe Invoice PDF Generation and Email Delivery for Subscription Renewals

[temma02]

Description

Implement Stripe invoice PDF generation and email delivery so that users automatically receive invoice PDFs upon subscription renewal, supporting their accounting and record-keeping needs.

Requirements and Context

• Correctness: Invoices must be generated and delivered on renewal
• Testing: Test invoice generation and delivery
• Documentation: Document the invoice delivery flow

Suggested Execution

Branch: feat/issue-123-stripe-invoice-pdf-delivery

Implement Changes

• Hook into the Stripe invoice.paid webhook to trigger PDF delivery
• Retrieve the invoice PDF from Stripe
• Email the invoice PDF to the customer
• Handle delivery failures with retry

Test and Commit

• Test invoice PDF retrieval and email delivery
• Test delivery failure retry
• Document the invoice delivery flow

Example Commit Message

feat(payments): add Stripe invoice PDF generation and email delivery

- Trigger PDF delivery on invoice.paid webhook
- Retrieve invoice PDF from Stripe
- Email PDF to customer with retry on failure

Guidelines

• Use Stripe's hosted invoice PDFs
• Handle email delivery failures with retry
• Verify webhook signatures before processing