feat: implement email notification worker with Mailgun integration

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- Add MongoDB connection module for database access
- Implement Mailgun email service for sending notifications
- Add shareChecksum utility for generating secure share links
- Implement three email sender functions:
  - Email verification requests (highest priority)
  - Rent due notifications (CET timezone)
  - Utility bills due notifications
- Create main email worker with budget-based email sending
- Add environment variables for configuration
- Install dependencies: mongodb, mailgun.js, form-data
- Update package.json description to reflect email worker purpose
- Add .env.example with all required configuration

The worker processes emails in priority order and respects a configurable
budget to prevent overwhelming the mail server. All database operations are
atomic and updates are performed immediately after each email send.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

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This commit is contained in:

Knee Cola

2025-12-30 12:27:32 +01:00

parent 33ab06e22e

commit a901980a6f

11 changed files with 10408 additions and 3 deletions

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