[HasToBeJames]

Description

Adds requested E2E coverage for the four assigned admin API issues and secures auth-block administration behind authentication and admin authorization.

Closes #658
Closes #659
Closes #660
Closes #661

Changes proposed

What were you told to do?

• Cover administrator auth-block listing, clearing, and enforcement for blocked authentication requests.
• Cover saving and publishing admin course drafts.
• Cover enrollment trend date ranges, aggregation, and cache behavior.
• Cover quiz history aggregation, superseded attempts, and cache behavior.

What did I do?

Admin access and course drafts

• Added E2E cases for authenticated admin-only auth-block routes and clear/list behavior.
• Added E2E cases for draft save visibility and publishing a completed course.

Course analytics

• Added E2E cases for enrollment trend filtering/grouping and cached results.
• Added E2E cases for quiz history calculations, excluding superseded submissions, and cached results.

Check List

• My code follows the code style of this project.
• This PR does not contain plagiarized content.
• The title and description of the PR explain the approach.
• I am making a pull request against the main branch.
• My commit message style matches the requested structure.
• The implementation was reviewed and confirmed to work as intended.
• I am only making changes relevant to the requested issues.

Screenshots / Validation Evidence

• npm run typecheck failed because of existing repository-wide TypeScript errors in config, quiz, rewards, and other modules; no clean type-check is claimed.
• npm run lint completed with 0 errors and existing warnings.
• E2E suites could not start because local Postgres/Redis and the required test environment values are not configured.

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