Simulation

Start, pause and stop simulation, and the workspace sim state.

📄️/api/sim/pause

Hold or release the running exercise without ending its run.

Both kinds are always returned. An unconfigured simulator is shown and greyed

**One press.** This used to be `load` (spawn and hold) followed by `play`

Workspace state, not component state. That is the fix for a selection that

**Refuses while something is loaded.** Silently discarding a loaded exercise

**The environment stays attached.** Stopping reverts it to its earliest state —

Freeze / unfreeze the running simulation in place. Reversible and does NOT finalize the run (that is `stop`), so the operator can hold the

Resume a paused simulation from the instant it was held.

Start a scenario in the embedded simulator (legacy kinematic-world path).

Report the world's status, the active run, and what the binding turned away.

Stop the running simulation and finalise its run as complete.