Drop unsloth: use standard bitsandbytes 4-bit + peft LoRA + TRL GRPOTrainer

Pin transformers <4.52 and unsloth_zoo==2025.11.1 for API compat

Add LD_LIBRARY_PATH for pip-installed NVIDIA libs (bitsandbytes fix)

Remove torchao entirely - transformers handles absence gracefully

Fix: install torchao 0.8.0 separately, unsloth --no-deps to avoid torchao>=0.13 conflict

Pin compatible versions: torch 2.6.0 + torchao <0.9 + transformers <5.0

Update CUDA to 12.4.1 and unpin PyTorch version to fix torchao/int1 compatibility

Remove --no-deps to allow installing sub-dependencies like regex

Explicitly install gcc, g++, python3-dev and set CC/CXX

Add build-essential for Triton compilation

GRPO training with CUDA + results in UI

fix: remove ENV OPENGRID_MODE to avoid HF secrets collision

fix: lean Dockerfile + remove unsloth from training deps

fix: unified Dockerfile with entrypoint for server/training mode

restore env Dockerfile

training dockerfile

Restore env Dockerfile

Use training Dockerfile for GPU Space

OpenGrid: Multi-agent POMDP power grid environment with GRPO training