Port of upstream grok-build 1.0.9. A bare positional http(s):// URL
with no transport flag was silently added as a stdio command whose
"command" was the URL. It now infers the HTTP transport with a notice;
extra args, --env, legacy --command/--url, and every explicit flag keep
their prior meaning, and scheme-less URL-looking commands still stay
stdio with the existing warning.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KSy9S31pZNWXtRZNVJ1sDf