Simulation environment commands

Create a simulation environment:

tpc sim env create \
  --name "My Environment" \
  --agent-config '{"harness":"claude","model":"claude-sonnet-4-6"}'

Create an environment with task links and schedule:

tpc sim env create \
  --name "Test Env" \
  --agent-config @examples/agent-config.json \
  --task-ids task_123,task_456 \
  --schedule 7d

TPC manages the sandbox provider. The CLI does not accept sandboxProvider in agent configuration or portable environment files.