test(frontend): implement wave 2 api and hook coverage uplift

[fpigeonjr]

What changed

• Added Wave 2 test coverage for:
  • frontend/src/api/opsAPI.js
  • frontend/src/hooks/useChangeRequests.hooks.js
  • frontend/src/hooks/useGetAllAgreements.js
• Expanded branch/error-path tests and skip/conditional cases.
• Updated Wave 2 tracking doc with local coverage deltas:
  • docs/developers/frontend/coverage-90/wave-2-issue.md

Issue

• Wave 2 coverage issue: [Coverage][Wave 2] API and shared hook concentration #5162
• Related (program tracking only): Accessibility Audit and Remediation Plan (Frontend, WCAG 2.1 AA) #5149

How to test

1. cd frontend
2. bun run test --watch=false src/api/opsAPI.test.js src/hooks/useChangeRequests.hooks.test.js src/hooks/useGetAllAgreements.test.js
3. bun run test --watch=false
4. bun run test:coverage --watch=false
5. Confirm coverage deltas are reflected in docs/developers/frontend/coverage-90/wave-2-issue.md

A11y impact

• No accessibility-impacting changes in this PR
• Accessibility changes included and validated against WCAG 2.1 AA intent
• Any temporary suppression includes A11Y-SUPPRESSION metadata (owner, expires, rationale)

Screenshots

• N/A (test-only + docs update)

Definition of Done Checklist

• OESA: Code refactored for clarity
• OESA: Dependency rules followed
• Automated unit tests updated and passed
• Automated integration tests updated and passed
• Automated quality tests updated and passed
• Automated load tests updated and passed
• Automated a11y tests updated and passed
• Automated security tests updated and passed
• 90%+ Code coverage achieved
• Form validations updated

Links

• docs/developers/frontend/coverage-90/wave-2-issue.md

[Copilot]

Pull request overview

Adds Wave 2 unit-test coverage for high-gap frontend API/hook modules and updates the Wave 2 tracking doc with local coverage deltas.

Changes:

• Added comprehensive unit tests for useGetAllAgreements (pagination, skip, error paths, cancellation, stable params).
• Added unit tests for useChangeRequests.hooks hooks + getChangeRequestsForTooltip helper across dependency/conditional branches.
• Expanded opsAPI tests around agreement query construction, fiscal year normalization, and getAgreementById query modes; updated Wave 2 tracking doc snapshot.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
frontend/src/hooks/useGetAllAgreements.test.js	New tests for pagination/multi-page behavior, skip, error paths, unmount cancellation, and refetch gating.
frontend/src/hooks/useChangeRequests.hooks.test.js	New tests covering multiple hooks and tooltip message builder branches/conditions.
frontend/src/api/opsAPI.test.js	Additional tests for agreements query param construction/normalization and getAgreementById arg shapes.
docs/developers/frontend/coverage-90/wave-2-issue.md	Marks Wave 2 targets complete and records local coverage deltas + update-draft snippet.

Comments suppressed due to low confidence (1)

docs/developers/frontend/coverage-90/wave-2-issue.md:29

• The phrase "parent accessibility/quality tracking issue" seems incorrect for this Wave 2 coverage tracking doc. Consider updating it to refer to the parent coverage/quality tracking issue (or the specific parent issue number) to avoid confusion.

## Parent Issue Update Draft
Use this comment on the parent accessibility/quality tracking issue:

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[github-actions]

🎉 This PR is included in version 1.316.0 🎉

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