feat: HF Space replay backend — trace store, /api endpoints, Docker, Cell 9

feat: 5 training plots (reward±std, KL/loss, completion stats) + Drive backup in Cell 8

fix: plots gitignore, trainer_state fallback for reward curve, Cell 8 --trainer-state arg

fix: Cell 8 — pull before plots, GH_TOKEN push, copy Drive logs

Phase 7/8: full README, video script, make_plots.py, Cell 8 implementation

feat: fill in Cell 7 for full training run (Phase 6)

Phase 5: training pipeline — client, GRPO trainer, eval, baselines (23 handcrafted attacks)

Phase 4: InjectArenaEnv + FastAPI server + Dockerfile + env tests (81 passing)

fix: load SecAlign before PG2 in Cell 3 to avoid vLLM CUDA init conflict

fix: add %cd /content/injectarena to cells 3+4 (lost after runtime restart)

fix: FirewallWrapper falls back to pg2 instance when llamafirewall scanner fails

Phase 3: defense wrappers + Colab smoke/benchmark cells

Notebook: hard-code REPO_URL to Inject-Arena GitHub

Phase 0: bootstrap