Run 3: Qwen2.5-0.5B GRPO 500 steps | reward 0.96→1.75 | conflict 0.375→0.1875 | dashboard chart | agents wired

final submission: real reward curve from training logs

add lora checkpoints and training updates

track png with lfs

Remove AUDIT_UPDATED.md and reward_curve.png

Fix: task difficulty counts, dashboard legend modal, training metrics, reward curve, /metrics/history endpoint