# Task 3 - Add Email Notification on User Creation

## Summary
Successfully added email notification functionality when creating users in the Totes Ltda. customer service system.

## Work Completed

### Part A: Installed nodemailer
- `bun add nodemailer` — installed nodemailer@8.0.11
- `bun add -d @types/nodemailer` — installed @types/nodemailer@8.0.0

### Part B: Created email utility
- Created `/home/z/my-project/src/lib/email.ts`
- Exports `sendUserCreatedEmail({ to, name, password, role })`
- Uses lazy-initialized nodemailer transporter
- Gracefully skips if SMTP not configured (SMTP_HOST, SMTP_USER, SMTP_PASS all required)
- HTML email template with Totes Ltda. branding (gradient orange header, info box with credentials, login button, security warning)
- Plain text fallback version also included
- Returns `{ sent: boolean, error?: string }`

### Part C: Updated .env
- Added SMTP_HOST, SMTP_PORT, SMTP_USER, SMTP_PASS, SMTP_FROM, NEXT_PUBLIC_APP_URL
- All SMTP fields empty by default (email disabled until configured)
- Default APP_URL: http://sac.totes.com.bo

### Part D: Integrated into 5 API routes
1. `/src/app/api/admin/users/route.ts` — POST handler (all roles)
2. `/src/app/api/users/customers/route.ts` — POST handler (CUSTOMER role)
3. `/src/app/api/users/supervisors/route.ts` — POST handler (SUPERVISOR role)
4. `/src/app/api/users/managers/route.ts` — POST handler (MANAGER role)
5. `/src/app/api/users/admins/route.ts` — POST handler (ADMIN role)

All integrations are non-blocking (fire-and-forget with `.catch()`).

### Verification
- `bun run lint` passes with no errors
- Dev server running correctly