Add AGENTS.md and pr_compliance_checklist.yaml; fix app.py location (#16)

fix: route inference through Modal endpoint instead of HF Router (#15)

fix: remove gradio>=6.0 from requirements_space.txt (SDK forces 5.0.0)

Update EVALUATION.md: NVIDIA Nemotron requirement, model-swappable architecture, task list

Add sponsor prizes + bonus quests evaluation (docs/EVALUATION.md)