refactor: improve console UI safety and consistency

[overtrue]

Pull Request

Description

This PR applies the completed Console-wide UI and interaction review across status, settings, bucket configuration, SSE/KMS, IAM, dialogs, tables, responsive layouts, and navigation.

The work focuses on clearer hierarchy, safer state handling, fixed dialog actions, mobile parity, accessible controls, and eliminating unnecessary nested frames. The complete finding-to-resolution record is kept in docs/ui-review/register.md (UI-001 through UI-031).

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Code refactoring
• Performance improvement
• Test improvements
• Security fix

Main changes

• Reworked running status, server health, pool decommission, and rebalance states so loading, partial, stale, error, and empty data are distinct.
• Standardized bucket settings and rule flows for lifecycle, replication, events, encryption, policy, quota, and retention.
• Hardened SSE/KMS mutation safety, destructive confirmations, secret redaction, unsaved-change handling, mobile key actions, and Local KMS restrictions.
• Improved IAM and access-key dialogs, selectors, focus restoration, table semantics, validation, and failure recovery.
• Fixed long-form dialog scrolling, Policy editor containment, compact desktop controls, login form width, detail-page action placement, and top-navigation avatar spacing.
• Preserved upstream object rename, lazy loading, version recovery, degraded health states, and updated translations while rebasing onto the latest main.
• Added the reusable Console design guide under skills/rustfs-console-design-guide/ and the audit workflow record under docs/ui-review/.

Testing

• Unit tests added/updated
• Manual testing completed

pnpm install --frozen-lockfile
pnpm type-check
pnpm lint
pnpm format:check
node --test tests/lib/*.test.js
pnpm build
git diff --check

Result: 212 tests passed; production build passed. Next.js only emitted the existing multiple-lockfile workspace-root warning.

Checklist

• Code follows the project's style guidelines
• Self-review completed
• TypeScript types are properly defined
• All commit messages are in English (Conventional Commits)
• All existing tests pass
• No new dependencies added

Related Issues

No linked issue.

Screenshots

Area	Evidence keys
Running status and pool operations	running-status-10, pool-operations-9
Bucket settings and rule flows	bucket-settings-11, layout-followup-27
SSE/KMS	sse-16-overview, sse-17-service-stop, sse-18-key-card-flow
IAM, dialogs, and remaining surfaces	iam-13-a11y, remaining-21, avatar-inset-28

The committed source-of-truth mapping, issue descriptions, resolutions, and evidence status are in docs/ui-review/register.md. PNG comparisons remain outside the repository so temporary visual artifacts are not added to the product source tree.

Additional Notes

The branch was rebased onto the latest main before the final verification run.

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