43 tests across 4 classes hitting the live API. Shared capsule per class
to minimize VM boot overhead. All capsules destroyed in teardown.
Skips automatically when WRENN_API_KEY is not available.
The server-side agent runs commands through a nice wrapper that uses
"${@}" expansion. Sending the full command string as a single cmd field
caused nice to treat it as one executable name. Now Commands.run sends
cmd=/bin/sh args=["-c", cmd_string] so "${@}" expands into proper argv.
