Wire up workflow_state change detection in the
after_update observer callback so publishing or
unpublishing a wiki page fires the appropriate
wiki_page_published/wiki_page_unpublished events.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

…igger-live-event_AS-647

…iki page workflow_state is detected, wiki_page_updated is called instead.

…ray 'end' in conditional statement.

…ng wiki_page_updated due to workflow state change (publish/unpublish) as these values do not change.

…are on the same line.

…on, live event fires. Verified with manual testing using fake kinesis server. Created spec tests for automated testing.

quizzes without assignments

Instead of reusing assignment_created/assignment_updated,
introduce distinct event types so consumers aren't
confused by events with no associated assignment.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>