Review follow-up: the base fusion.technician.task.description is required=True and
non-in-store tasks require an address (_check_address_required). So:
- action_book_from_wizard now defaults description to 'Service booking' when the
payload carries neither description nor issue (avoids a required-field failure).
- test_task_without_order_is_allowed now sets description + is_in_store=True so it
exercises only the relaxed _check_order_link, not those unrelated base constraints.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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