Problems fixed:
- Timesteps 5k-30k caused all trials to timeout (PPO+CNN+CPU needs ~0.1s/step)
- New range: 1000-5000 steps fits well within 480s timeout
- PPO random init policy outputs throttle~0 -> car sits still -> fix with ThrottleClampWrapper (min 0.2)
- Sim stuck detection: if speed<0.02 for 100 consecutive steps, stop training and report error
- Sim frozen detection: if observation unchanged for 30 steps, stop training (connection lost)
- eval_episodes reduced to 3 to speed up evaluation phase
Agent: pi/claude-sonnet
Tests: 37/37 passing
Tests-Added: 0 (behaviour change only)
TypeScript: N/A
8c9fd76c68