R3D347HR4Y 4eadb91a64 Enhance mail API with rate limiting, idempotency, and attachment management ... - Added rate limiting for outbound email sends to prevent abuse, implemented in `internal/api/mail/sendguard`. - Introduced idempotency key support for email sending to avoid duplicate submissions. - Enhanced attachment handling with new limits and validation in `internal/api/mail/limits`. - Updated outbox processing to include retry logic and circuit breaker for SMTP failures. - Improved HTML sanitization for email content to enhance security. - Added unit tests for new features, ensuring robust functionality and error handling. - Updated configuration options in `.env.example` for new mail settings.		2026-05-22 17:19:16 +02:00
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main.go	Enhance mail API with rate limiting, idempotency, and attachment management	2026-05-22 17:19:16 +02:00