openshell sandbox create --timeout=?

User Story

For whatever reason some of my "sandbox create" (using podman) take longer than 30 seconds and thus timeout.

Problem Statement

For whatever reason some of my "sandbox create" (using podman) take longer than 30 seconds and thus timeout.

Impact / Why This Matters

it's awkward trying to download images by hand; try running multiple times to get one to work; debug whether it's just a time issue or some other problem.

Proposed Design

add "--timeout=?" to sandbox create to override 30 second default.

Acceptance Criteria

observe that sandbox create could wait longer for podman to create the container

Alternatives Considered

none

Agent Investigation

No response

Checklist

• I've reviewed existing issues and the architecture docs
• This is a design proposal, not a "please build this" request

Empieza siguiendo el comando sandbox create hasta el tiempo de espera existente de 30 segundos y su ruta de creación de Podman, utilizando la documentación de arquitectura referenciada en el issue. Se considera terminado cuando sandbox create --timeout=? puede sobrescribir el valor predeterminado y esperar más tiempo a Podman sin romper el comportamiento predeterminado; añade o ejecuta las pruebas relevantes del comando si se encuentran allí.