actpred: action_dim改18 + .mt脚本预训练入口

- config.py: action_dim默认值 8→18(对齐bot4cj 18列)
- mt_parser.py: 轻量级.mt @Action解析器(支持-占位符前向填充)
- pretrain_mt.py: 预训练入口(零图像占位,checkpoint兼容现有推理)
- _run.sh: 新增pretrain子命令
- README.md: 新增预训练文档 + action_dim说明
- test_actpred.py: 测试断言更新为18
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qing committed 2026-08-08 17:09:14 +00:00
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@@ -6,7 +6,7 @@ from typing import Optional
@dataclass
class DataConfig:
image_size: int = 64
action_dim: int = 8
action_dim: int = 18
history_len: int = 5
data_dir: str = "./data"
normalize_actions: bool = False