localshell backend implementation

lang_agent/fs_bkends/localshell.py

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+from dataclasses import dataclass, field, is_dataclass
+from typing import Type, TypedDict, Literal, Dict, List, Tuple, Optional
+import tyro
+import os.path as osp
+from abc import ABC, abstractmethod
+import glob
+from loguru import logger
+
+from deepagents.backends.utils import create_file_data
+from deepagents.backends import LocalShellBackend
+
+from lang_agent.config import InstantiateConfig
+from lang_agent.fs_bkends import BaseFilesystemBackend
+
+
+@tyro.conf.configure(tyro.conf.SuppressFixed)
+@dataclass
+class LocalShellConfig(InstantiateConfig):
+    _target:Type = field(default_factory=lambda:LocalShell)
+
+    workspace_dir:str = "./workspace"
+    """path to workspace directory"""
+
+    skills_dir:str = "./workspace/skills"
+    """path to directory containing skill files"""
+
+    rt_skills_dir:str = "/skills"
+    """path to directory with skills in runtime directory"""
+
+
+class LocalShell(BaseFilesystemBackend):
+    def __init__(self, config:LocalShellConfig):
+        self.config = config
+        self._build_backend()
+    
+    def _build_backend(self):
+        self.backend = LocalShellBackend(root_dir=self.config.workspace_dir,
+                                         virtual_mode=True,
+                                         env={"PATH": "/usr/bin:/bin"})