feat(email): enhance email services with welcome and account deletion…

[DanielPopoola]

Description

Integrates three new transactional email templates (welcome, reset password, account deletion) into the email service. Templates follow the existing Jinja2 pattern in app/templates/emails/ and are wired into the appropriate service layer trigger points.

Type of Change

• feat — New feature

Related Issue

Closes #

Changes Made

• Added app/templates/emails/welcome.html — sent after successful email verification
• Added app/templates/emails/reset_password.html — replaces the previous minimal template
• Added app/templates/emails/account_deletion.html — sent when account deletion is requested
• Added app/templates/emails/assets/ — icons and background image referenced by templates
• Added send_welcome_email() to app/services/email_service.py
• Added send_account_deletion_email() to app/services/email_service.py
• Wired send_welcome_email() into VerificationService.verify_email() after user is marked verified
• Updated send_password_reset_email() to use the new richer template

Proof of Work

API Response / Screenshots

// POST /api/v1/auth/verify-email
// Status: 200 OK
// {
//   "success": true,
//   "message": "Email verified successfully",
//   "data": {
//     "id": "...",
//     "email": "user@example.com",
//     "next_step": "onboarding"
//   }
// }

Test Cases

• test_send_welcome_email_renders_without_error
• test_send_reset_password_email_renders_without_error
• test_send_account_deletion_email_renders_without_error

Test output

# uv run pytest tests/test_email_service.py -v -s
tests/test_email_service.py::test_send_welcome_email_renders_without_error [transformers] PyTorch was not found. Models won't be available and only tokenizers, configuration and file/data utilities can be used.
2026-05-30T05:02:22 [INFO    ] [00000000000000000000000000000000-0000000000000000] app.services.email_service: [MOCK EMAIL] to=user@example.com subject=Welcome to MeetMind
PASSED
tests/test_email_service.py::test_send_reset_password_email_renders_without_error 2026-05-30T05:02:22 [INFO    ] [00000000000000000000000000000000-0000000000000000] app.services.email_service: [MOCK EMAIL] to=user@example.com subject=Reset your MeetMind password
PASSED
tests/test_email_service.py::test_send_account_deletion_email_renders_without_error 2026-05-30T05:02:22 [INFO    ] [00000000000000000000000000000000-0000000000000000] app.services.email_service: [MOCK EMAIL] to=user@example.com subject=Account deletion requested
PASSED

============================================================ 3 passed in 6.45s =============================================================

Checklist

• My branch follows the naming convention (feat/email-templates)
• My commits follow Conventional Commits
• I have added meaningful tests that cover success and failure paths
• All new and existing tests pass locally (uv run pytest)
• I have included proof of work (JSON responses or screenshots)
• I have updated documentation if needed
• My code follows the project's style guidelines

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