feat: Add SSH command affordance for factory sandboxes (#13779)
Adds an easy-to-copy terminal SSH command to factory sandboxes.
- New sandboxSshCommand() helper in agent/lib/sandbox-ssh.ts generates
the command sandbox ssh <name>.
- New CopyCommand React component copies the command to the clipboard
and shows a copied confirmation.
- Integrated into both RunTicket (when a run has a sandbox) and
SandboxCard (in the sandbox inventory).
- Added unit tests for the SSH command helper.
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Co-authored-by: vercel[bot] <35613825+vercel[bot]@users.noreply.github.com>