- Added send_admin_job_deactivation_notification() method
- Hooks transition_post_status with guards: draft status AND old publish
- Extracts deactivation reason from ACF field job_deactivation_reason
- Email subject: "Stellenangebot deaktiviert: {job_title}"
- Email includes job details, provider info, and deactivation reason
- Sends to admin_email with edit link for review
- Error logging for missing admin_email or wp_mail failure
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>