docs: define helpdesk and ticket ownership

docs/HELPDESK_DOMAIN_BOUNDARY.md

@@ -6,21 +6,20 @@ Internal service desk workflows for IT, facilities, HR, finance, procurement, ac
 
 ## Owns
 
-- internal support tickets
-- service categories
-- assignment and escalation state
-- resolution records
-- SLA-facing timestamps
+- helpdesk queue and service-category profiles
+- SLA and escalation policy profiles
+- IT/facilities service-desk defaults and reporting vocabulary
 
 ## Does Not Own
 
-- public issue intake forms
+- canonical ticket identity, messages, assignment, and resolution state
+- public ticket intake forms
 - domain case adjudication
 - asset inventory
 
 ## Integration Candidates
 
-- issue_reporting
+- tickets
 - assets
 - facilities
 - mail
@@ -44,4 +43,5 @@ No runtime API, database model, migration, WebUI route, or navigation item is re
 
 ## First Implementation Slice
 
-Create service ticket types, status flow, assignee ownership, and linking hooks for issue-reporting, assets, and facilities.
+Define Helpdesk queue, SLA, and escalation profiles over `govoplan-tickets`.
+Do not create a second ticket persistence model.