fix(account): display OIDC username with fallback

[GatewayJ]

Pull Request

Description

Display the verified OIDC username on the account page and user menu. When the configured username claim is missing or blank, fall back to email and then to the existing access key/account name.

The user menu reuses its existing /accountinfo response, so this change adds no request or competing identity source. Companion backend change: rustfs/rustfs#7654.

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

Testing

• Unit tests added/updated
• Manual testing completed

pnpm install --frozen-lockfile
pnpm type-check
pnpm lint
pnpm format:check
pnpm test:run
pnpm build

All 572 unit/source tests passed. Production builds for the upstream base and this commit were loaded with the same mocked authenticated OIDC response at a 1440 × 1000 viewport. The screenshots cover the loaded account page and the open user menu.

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, or they are justified

Related Issues

Related to rustfs/rustfs#7646.

Screenshots (if applicable)

Before

After

Additional Notes

• The display-only resolution order is username → email → access_key/account_name.
• Older RustFS responses remain supported because the existing account identifier is retained as the final fallback.
• Authentication and authorization identities are unchanged.

[GatewayJ]

@codex

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-11T05:00:21.902242Z	152e407	Manual request

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[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Can't wait for the next one!

Reviewed commit: 152e407b53

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