Fix Hydra config error in dev script

- Change train.n_iters to train.n_epochs (correct DPPO parameter)
- Update experiment tracking with failed job details
- Ready for corrected dev test

slurm/run_dppo_dev.sh

@@ -41,12 +41,11 @@ echo "PyTorch version: $(python -c 'import torch; print(torch.__version__)')"
 echo "CUDA available: $(python -c 'import torch; print(torch.cuda.is_available())')"
 echo ""
 
-# Run a quick pre-training test with reduced steps
+# Run a quick pre-training test with reduced epochs
 python script/run.py --config-name=pre_diffusion_mlp \
     --config-dir=cfg/gym/pretrain/hopper-medium-v2 \
-    train.n_iters=10 \
-    train.log_interval=5 \
-    train.checkpoint_interval=10 \
+    train.n_epochs=2 \
+    train.save_model_freq=1 \
     wandb=${WANDB_MODE:-null}
 
 echo "Dev test completed!"