The previous implementation PATCHed the `resources` string directly, which CW
silently ignores because `resources` is a server-derived read-only field (it's
populated from schedule entries of type/id=4, not freely writable).
Per CW docs (openapi line 70949): "Please use the
/schedule/entries?conditions=type/id=4 AND objectId={id} endpoint".
Behavior per spec:
- No owner + assign user → set owner (existing behavior kept)
- Has owner + assign different user → POST /schedule/entries with type/id=4,
member, objectId; owner untouched
- User already assigned (owner or schedule entry) → idempotent no-op
- Remove owner → clear owner (existing behavior kept)
- Remove co-assignee → DELETE /schedule/entries/{entry_id}
- list_resources now merges owner + schedule-entry members, deduped by id
Required CW security role permission on the API member:
- Service > Resource Scheduling > Add/Inquire/Delete
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>