Split train and tool simulator modules; mastery curriculum and grader workflow nudge.

feat: default GRPO/eval to Qwen/Qwen3-1.7B + LoRA; disable Qwen3 thinking in chat template

fix: T4-safe 4bit compute, eval/audit resilience, async inference, plot_rewards CSV/table

Rebrand: drop 'Support Ops' user-facing text; add DriftShield* aliases; tighten README

Cleanup: drop legacy support-ops cruft now that DriftShield is the only collection

DriftShield Phase A: D1 collection, 4 runtime-failure tasks, ops.get_recommendation, recoverable schema drift

feat: GRPO training stack (Qwen3 + Unsloth opt-in, curriculum, eval, audit)

add expert task: GDPR compliance trap with misleading signals

fix: align inference.py env vars with spec and clean up repo

fix: match mandatory stdout format from hackathon spec

clean rewrite: shorter vars, no comments, same logic