Prepare hackathon submission: sandbox-default notebook, single README, committed results.

Finalize checkpoint-first evaluation and sandbox submission workflow.

Improve submission docs and training run transparency.

audit pass: hackathon-ready polish and truthful reporting

Polish judge-facing docs and add checkpoint evaluation.

Harden training signal and clean generated artifacts.

add nbformat cell ids to train_notebook.ipynb

revert train_notebook.ipynb to Colab-compatible baseline

add secure HF token handling for DGX training

harden training for shared DGX GPUs

make Step 3 sanity check resilient on DGX GPUs

make DGX training resilient without bitsandbytes

upgrade bitsandbytes and wire torch CUDA runtime for DGX

repair broken aiohttp/charset stack for unsloth imports

force wheel-only DGX install path in notebook

fix DGX notebook dependency resolution failures

stabilize DGX notebook dependency installation

enforce unsloth-first colab training and preflight checks

stabilize colab training deps with robust fallback path

fix colab GRPO dependency setup and error guidance

fix colab training import by adding mergekit dependency

updated EICC v2 environment, APIs, and training pipeline