Restored from branch v20260203-13-autotask-resolution-item-wrapper with
the following functionality:
- Autotask REST API client with support for tickets, notes, companies,
and reference data (queues, sources, priorities, statuses)
- Safe ticket updates preserving stabilizing fields per API contract
- Database models for Autotask settings, customer mapping, and ticket linkage
- Settings UI for Autotask configuration with connection test
- Run Checks integration for ticket creation
- Customers page with Autotask company mapping
- Ticket linking during mail import
Also preserved the require_daily_dashboard_visit setting from the
current branch.
Added docs/autotask_rest_api.md with validated API contract from Postman tests.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
