feat: Support Junior brokerage accounts

[aseembehl]

Problem or use case

Hi,

could you add support for Junior / child Broker accounts accessible to a parent or guardian?

The CLI already discovers Junior Overnight accounts, but Broker commands appear to only expose the authenticated parent's portfolio.

Read-only support would already be very useful.

Ideally the CLI would expose stable account/portfolio IDs and indicate whether a portfolio is Personal or Junior.

Thanks!

Proposed solution

No response

Alternatives considered

No response

Relevant command or workflow

No response

User impact

Blocking a workflow

Checklist

• I have searched existing issues.
• This is a CLI feature request, not an account/support request.
• I understand this repository is source-available and does not accept external PRs.

[fbenz]

Thanks for the feature request. We will consider adding proper support for junior accounts.