feat: eval benchmark + cloud-trained models replace train/
- eval/: 统一推理评估框架 (infer_train.py, infer_reproduce.py, viz_flow.py,
viz_signals.py, generate_report.py, run_all.sh, scene_manifest.py)
- train/: 替换为云端正式训练产出，覆盖 11 个场景
- Karman: Re100 (5 seeds), Re60/200/400 transfer
- VarDist: d075/d15/d2 scratch
- Illusion: 0.75L/1.0L/1.5L/2.0L scratch
- train_karman.py: 新增 --resume-from 断点续训支持
- calibrations: 17 组标定数据 (kar/ill 命名规范)
- scripts/: 7 个自动化训练脚本
- 清理旧 calibrations/shell scripts/visualize
Co-authored-by: Cursor <cursoragent@cursor.com>
