feat(onboard): display usage notice during first-run onboarding

[ericksoa]

Summary

Add a brief usage notice to the onboard flow that informs users about applicable terms before provisioning a sandbox.

Motivation

As adoption grows, we should ensure users see relevant legal and usage information before the tool configures infrastructure on their behalf. This is standard practice for CLI tools that provision cloud or local resources.

Proposed Behavior

• Display a short notice during the onboard wizard (e.g., between environment checks and sandbox creation)
• In non-interactive mode (--non-interactive), log the notice to stderr without blocking
• Keep the text concise — link to full terms rather than embedding them inline

Acceptance Criteria

• Notice appears on first onboard run
• Non-interactive mode does not block on the notice
• Notice text is configurable (not hardcoded) so legal can update it without a code change

[13ernkastel]

Fixed by open PR #1222: #1222

[13ernkastel]

Fixed by open PR #1222: #1222

I do not have permission to close issues in this repo from this account, so leaving this for a maintainer to close on review or merge.

[ericksoa]

Thanks for flagging, marked as closed