New Updates page in the Helpdesk module that fetches UPDATE/UPDATE-HF tickets
from Business Central (PBI_LV_Tickets) and allows assigning a domain and Gitea
link via a dialog. Ticket status (from BC) and assignment status (local) are
shown as separate columns with filters for both plus type and free-text search.
Assigned updates also appear on the domain detail page. Includes session-cached
BC fetch with refresh button, admin permissions, migration, and 16 unit tests.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>