feat: Add quiz_created and quiz_updated live events

[jasonfill]

Note

This could not be fully tested due to limited access to the live event service via the open source distribution.

Summary

Emits live events when classic quizzes are created or when quiz settings/availability are modified. This is a dedicated quiz-level event rather than an extension of assignment_updated because:

1. Not all quizzes have assignments — practice quizzes and ungraded surveys have no associated Assignment record, so assignment_updated would never fire for them.
2. Quiz-specific fields don't exist on Assignment — settings like access_code, time_limit, shuffle_answers, ip_filter, require_lockdown_browser, etc. are quiz-only columns that assignment_updated has no awareness of.
3. Availability date changes on the quiz need to be captured at the quiz level. When due_at, lock_at, or unlock_at change, the quiz pushes those to its associated assignment (which fires assignment_updated), but for non-graded quiz types this is the only event that fires.

Note: Adding new "Assign To" blocks (AssignmentOverrides) does NOT trigger quiz_updated — those are separate records and already emit assignment_override_created/assignment_override_updated events natively in Canvas.

Model callbacks

Quizzes::Quiz model additions:

• after_save :fire_quiz_created_event — new records only, skips migrations, emits inside after_transaction_commit
• after_save :fire_quiz_updated_event — fires when any field in QUIZ_EVENT_FIELDS changes, skips new records and migrations

QUIZ_EVENT_FIELDS (21 fields):

• Quiz-specific settings: access_code, allowed_attempts, anonymous_submissions, cant_go_back, disable_timer_autosubmission, hide_correct_answers_at, hide_results, ip_filter, one_question_at_a_time, one_time_results, require_lockdown_browser, require_lockdown_browser_for_results, scoring_policy, show_correct_answers, show_correct_answers_at, show_correct_answers_last_attempt, shuffle_answers, time_limit
• Availability dates: due_at, lock_at, unlock_at

Live event methods

• Canvas::LiveEvents.quiz_created(quiz) / .quiz_updated(quiz) — shared payload via get_quiz_data with full quiz settings
• access_code is emitted as a boolean (does not expose the actual code)

Data Services schemas

Canvas and Caliper event schemas added for both quiz_created and quiz_updated, registered in DataServicesEventsLoader under the "basic" category.

Files changed

File	Status
app/models/quizzes/quiz.rb	Modified
lib/canvas/live_events.rb	Modified
doc/api/data_services/data_services_events_loader.rb	Modified
doc/api/data_services/json/caliper/event-types/quiz_created.json	New
doc/api/data_services/json/caliper/event-types/quiz_updated.json	New
doc/api/data_services/json/canvas/event-types/quiz_created.json	New
doc/api/data_services/json/canvas/event-types/quiz_updated.json	New
spec/lib/canvas/live_events_spec.rb	Modified
spec/models/quizzes/quiz_spec.rb	Modified

Test plan

• Create a classic quiz — verify quiz_created event fires with correct payload
• Update quiz settings (time_limit, access_code, ip_filter) — verify quiz_updated event fires
• Update availability dates (due_at, lock_at, unlock_at) — verify quiz_updated event fires
• Update non-event fields (title) — verify no quiz_updated event
• Verify access_code is emitted as boolean, not the actual code value
• Verify no events fire during content migrations