Finalize eval-friendly defaults: offline baseline, deterministic API reset, docs cleanup

Finalize CPU-safe mock flow and verify live OpenEnv endpoints

Add Dockerfile, Docker Compose, and GitHub Action to publish Docker image to GHCR

Submission audit fixes: loss curve export, README compliance links, robust training script fallback

NVIDIA NIM Support: Added NvidiaNIMProvider as a first-class inference mode

Final Structural Fix: Preserved code in candidate rankings for authentic DPO export

Final Submission Upgrade: Advanced tier progression, professional README, and hackathon blog