feat(console): align UI and responsive navigation

[GatewayJ]

Type of Change

• New Feature
• Bug Fix
• Documentation
• Performance Improvement
• Test/CI
• Refactor
• Other:

Related Issues

N/A

Summary of Changes

• Align Console semantic status colors, primary action hierarchy, and page-header rhythm with the standalone RustFS Console design language.
• Add responsive desktop and mobile navigation while preserving the existing login flow, cluster topology tree, and Console functionality.
• Promote tenant creation to the tenant-page primary action, keep namespace management available in the filter menu, and remove duplicate visible page titles while retaining accessible headings.
• Add Vitest and Testing Library coverage for dashboard navigation, responsive sidebar behavior, tenant filtering, and primary actions, and run these tests in local and CI gates.

Checklist

• I have read and followed the CONTRIBUTING.md guidelines
• Passed make pre-commit (fmt-check + clippy + test + console-lint + console-fmt-check)
• Added/updated necessary tests
• Documentation updated (if needed)
• CHANGELOG.md updated under [Unreleased] (if user-visible change)
• CI/CD passed (if applicable)

Impact

• Breaking change (CRD/API compatibility)
• Requires doc/config/deployment update
• Other impact: Console presentation and client-side navigation only; Operator APIs, reconciliation, and Tenant data-plane behavior are unchanged.

Verification

make pre-commit

Additional Notes

The primary risk is responsive navigation or filter-state regression in the Console. Component tests cover the changed interactions, and rollback is limited to reverting the two commits in this PR.

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Thank you for your contribution! Please ensure your PR follows the community standards (CODE_OF_CONDUCT.md) and sign the CLA if this is your first contribution.

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-04T08:10:49.352413Z	371b5c1	PR opened

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Reviewed commit: 371b5c1b90

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