fix(a11y): complete dashboard focus contrast and regression coverage

[groupthinking]

Parent program

Progresses #898.

Canonical implementation

Canonical branch/PR: claude/determined-maxwell-o4am5t / #1049. PR #1045 and other overlapping accessibility branches remain duplicate evidence only.

Objective

Complete the dashboard keyboard-focus work by:

• raising the Dispatch focus ring to sufficient contrast;
• raising the Refresh focus ring to sufficient contrast;
• retaining regression coverage for the focus-visible classes and the Go button's aria-busy behavior.

Declared file scope

• apps/web/src/components/dashboard/panels.tsx
• apps/web/src/lib/__tests__/dashboard-search-accessibility.test.ts

Acceptance evidence

• Dispatch uses ring-indigo-400/70; Refresh uses ring-white/40.
• Regression coverage scopes each focus-ring assertion to its specific button and tracks aria-busy from searchLoading.
• Exact head cc833f5284d1d96cadf99edda842ba4f1c5c79f1 is three commits ahead and zero behind main@995fa2682809483b483be7fddee43b834ed0d4f7, changing only the two declared files.
• CI, Coverage, CodeQL, Security Scan, Secret Scan, and Dependency Review pass; E2E is repository-skipped.
• Both substantive review threads are resolved. CodeRabbit approved the exact head and confirmed the button-scoped regression fix.
• Vercel preview dpl_DLiC1qKkDkKTs8L9aQ2hXkC95xYF is READY on exact head cc833f5284d1d96cadf99edda842ba4f1c5c79f1.
• PR fix(a11y): complete dashboard focus contrast and regression coverage #1049 remains draft; no merge is authorized.

Exact-head workflow evidence

• CI: run 30456585527 — success
• Coverage: run 30456585535 — success
• CodeQL Analysis: run 30456585922 — success
• Security Scan: run 30456585721 — success
• Secret Scan: run 30456585227 — success
• Dependency Review: runs 30456585433 and 30456732906 — success
• E2E Tests: run 30456585614 — repository-skipped
• Review threads: 2 resolved, 0 unresolved
• Preview: https://vercel.com/garv1/v0-uvai/DLiC1qKkDkKTs8L9aQ2hXkC95xYF — READY on exact head

Execution receipt

• Agent login: claude
• Run ID: session_01WJBTAoqpfHepiLfks3NhTk
• Canonical branch/PR: claude/determined-maxwell-o4am5t / fix(a11y): complete dashboard focus contrast and regression coverage #1049
• Claimed timestamp: 2026-07-27T21:42:15Z
• Latest verified heartbeat: 2026-07-29T13:35:46Z
• Exact head: cc833f5284d1d96cadf99edda842ba4f1c5c79f1

Result

Focused corrective unit completed. Close only #919. Keep #1049 draft for portfolio-level merge governance.

No merge, production deployment, branch deletion, credential/ruleset change, or competing implementation is authorized.

[linear-code]

MYX-97

[github-actions]

👋 Thanks for opening this issue! It has been automatically labeled for triage.

[coderabbitai]

🔗 Related PRs

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[github-actions]

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