Commit 18bbe3e9 promoted sandbox to a first-class cloud, removing it
from the --beta gate. The selectCloud() function in interactive.ts still
had ~30 lines of dead code injecting a "local-sandbox" synthetic option
(sandboxEnabled is always false post-promotion). Remove the dead block
and simplify selectCloud().
Bump CLI to 1.1.1.
Agent: code-health
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>