fix: restore dataclass import in env.py

feat: README.md - OpenEnv 5-step structure

feat: requirements.txt - OpenEnv 5-step structure

feat: Dockerfile - OpenEnv 5-step structure

feat: server/env.py - OpenEnv 5-step structure

feat: server/app.py - OpenEnv 5-step structure

feat: client.py - OpenEnv 5-step structure

feat: models.py - OpenEnv 5-step structure

update: plots/handoff_diff_over_epochs.png

update: plots/difficulty_breakdown.png

update: plots/ablation_comparison.png

update: plots/baseline_vs_trained.png

update: plots/reward_curve.png

update: plots/loss_curve.png

update: plots/generate_plots.py

update: BLOG.md

update: README.md

fix: plots/loss_curve.png

fix: plots/generate_plots.py

fix: README.md

fix: requirements.txt

fix: server/env.py

fix: Gradio 5 compat - README.md

fix: Gradio 5 compat - app.py

fix: Gradio 5 compat - requirements.txt

fix: remove Dockerfile (using Gradio SDK, not Docker SDK)

fix: .spaceignore - remove openenv dep, add .spaceignore

fix: requirements.txt - remove openenv dep, add .spaceignore

upload: training/train_grpo.ipynb

upload: training/grpo_config.yaml

upload: training/build_notebook.py

upload: server/tests/__init__.py

upload: server/tests/test_rubric.py

upload: server/tests/test_handoff_validator.py

upload: server/rewards/__init__.py

upload: server/rewards/rubric.py

upload: server/rewards/auxiliary.py

upload: server/__init__.py

upload: server/task_generator.py

upload: server/session_manager.py

upload: server/sandbox.py

upload: server/mcp_tools.py

upload: server/handoff_validator.py

upload: server/env.py

upload: plots/reward_curve.png

upload: plots/handoff_diff_over_epochs.png

upload: plots/generate_plots.py

upload: plots/difficulty_breakdown.png

upload: plots/baseline_vs_trained.png

upload: plots/ablation_comparison.png