- Simplify `sendEmail` by extracting `resolveFrom` and `buildPayload` helpers
- Remove `sendAuthEmail` and `sendAppEmail` exports, keeping only `sendEmail` and `sendBatchEmails`
- Replace hardcoded fallback sender with env-based validation (throws if missing)
- Update `BaseLayout` to resolve `supportEmail` from `ZEN_SUPPORT_EMAIL` env var instead of hardcoded default
- Conditionally render support section only when a support email is available
- Remove verbose JSDoc comments and reduce overall code verbosity
hykocx
87a04db04b