feat(OPS-2280): Award approval review page, BLI transitions, and validation rules

[josbell]

What changed

Adds the Award Approval review page and completes the Budget Team approver flow (PR 3 of 3).

• ApproveAwardApproval page (/agreements/:id/review-award): read-only review page for Budget Team showing agreement details, budget lines, CAN impact, vendor info, current award info, signed award (disabled), obligated date picker, submitter/reviewer notes, attestation checkbox, and "Approve Award" button
• Confirmation modal: "Are you sure you want to approve this agreement for Award? This will change the budget lines in Executing Status to Obligated Status, and budget lines in Planned Status to Planned Mod Status."
• Success flow: setAlert → scrollToTop → navigate to /agreements?filter=change-requests with 6-second auto-dismiss
• Full-team notification on approve: requester, project officers, team members, and all Budget Team members
• Validation rules: AwardApprovalResponseAuthorizationRule (BUDGET_TEAM/SYSTEM_OWNER only) and AwardApprovalResponseValidationRule (must be requested, not already responded), registered in the AWARD validator branch
• Routing: /agreements/:id/review-award registered in index.jsx
• usePreAwardApprovalData extended to expose step6, requestorName, requestorDate

Issue

#2280

How to test

Unit tests (no Docker):

cd backend/ops_api
pipenv run pytest tests/ops/validation/test_award_approval_validation.py

cd frontend
bun run test --watch=false src/pages/agreements/award-approval/ApproveAwardApproval.test.jsx

Manual end-to-end:

1. As COR, complete step 5, open /agreements/:id/award-approval, fill vendor/contract/award, click "Send to Approval"
2. As Budget Team user, confirm "Award" card appears on For Review tab
3. Click "Review Agreement" → confirm read-only review page at /agreements/:id/review-award
4. Check attestation, click "Approve Award" → confirm modal with exact text → confirm approval
5. Confirm green success banner auto-dismisses after ~6s and navigation to For Review tab
6. Verify BLIs: Executing → Obligated, Planned → Planned Mod; agreement shows Awarded
7. Verify History panel shows "Agreement Awarded" with correct copy

A11y impact

• No accessibility-impacting changes in this PR

Storybook

• N/A — change is page-specific or non-visual

Screenshots

N/A

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

• PR 1 of 3: feat(OPS-2280): Foundation — schema fix, PLANNED_MOD status, history award text #5899
• PR 2 of 3 (base): feat(OPS-2280): Award card on For Review tab and pending-award-approvals endpoint #5900