fix: keep submission task scores strictly within range

Add training scripts and utilities for NodeAudit and GraphReview

Refactor inference and training modules; add Dockerfile and server setup

fix: accept HFTOKEN fallback for HF router auth

feat: auto-fallback inference to HF Router when HF_TOKEN is set

fix: allow inference training runs without local gguf weights in hosted env

feat: final submission — model fix, README, Dockerfile

feat: Implement validation for canonical fixture and add training suite

feat: initialize CodeReviewEnv with foundational components