[Feature]: Cursor Agent CLI support

What workflow is missing or painful today?

OPENHARNESS_TEAMMATE_COMMAND is not enough for Cursor OpenHarness does document a hook OPENHARNESS_TEAMMATE_COMMAND (openharness/swarm/spawn_utils.py) for the executable used when spawning teammate processes. But the subprocess backend still builds: -m openharness --headless … (openharness/swarm/subprocess_backend.py) cursor-agent does not take -m openharness, so you cannot treat it as a drop-in teammate command without changing OpenHarness or adding a wrapper that translates that invocation into a valid cursor-agent … command line (non-trivial and brittle).

Proposed change

Make this work with Cursor Agent CLI

Alternatives considered

No response

Additional context

No response