feat: Add special exams v2 API to instructor dashboard

[brianjbuck-wgu]

Description

Adds Instructor API v2 endpoints for managing proctored and timed ("special") exams, as part of the ongoing Instructor Dashboard MFE migration.

New endpoints (all under /api/instructor/v2/courses/{course_id}/):

Method	Path	Description
GET	/special_exams	List all proctored/timed exams in a course
GET	/special_exams/{exam_id}	Retrieve details for a specific exam
POST	/special_exams/{exam_id}/reset/{username}	Reset a student's exam attempt
GET	/special_exams/{exam_id}/attempts	List all attempts for an exam
GET	/proctoring_settings	Retrieve course proctoring configuration
PATCH	/proctoring_settings	Update course proctoring settings
POST	/special_exams/{exam_id}/allowance	Grant a time extension or accommodation

Impacted user roles: Course Staff, Instructors (users with EXAM_RESULTS or VIEW_DASHBOARD permissions).

Supporting information

• Closes: Special Exams API #37470

Other information

• No database migrations — all data is sourced from edx_proctoring APIs and modulestore course fields.

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[Copilot]

Pull request overview

Adds a set of Instructor API v2 endpoints to support “special exams” (proctored/timed) workflows in the Instructor Dashboard, delegating exam/attempt/allowance operations to edx_proctoring and exposing course-level proctoring settings.

Changes:

• Added new DRF serializers for special exams, exam attempts, proctoring settings, and allowance requests.
• Introduced new v2 API views + URL routes for listing exams, viewing exam details, listing attempts, resetting attempts, updating proctoring settings, and granting allowances.
• Added API v2 tests and a Swagger (OpenAPI v2) reference spec for the new endpoints.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
lms/djangoapps/instructor/views/serializers_v2.py	Adds serializers that shape proctoring/exam payloads for the new endpoints.
lms/djangoapps/instructor/views/api_v2.py	Implements the new Special Exams + Proctoring Settings endpoints and integrates edx_proctoring APIs.
lms/djangoapps/instructor/views/api_urls.py	Registers the new Instructor API v2 routes.
lms/djangoapps/instructor/tests/views/test_special_exams_api_v2.py	Adds coverage for the new endpoints using mocked edx_proctoring calls where needed.
lms/djangoapps/instructor/docs/references/instructor-v2-special-exams-api-spec.yaml	Documents the new endpoints in the instructor v2 API reference set.

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