feat: Initial library extraction from PIN LLM benchmark

DockerSandbox + LangChain file/shell tools extracted into a standalone package.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docker_agent_sandbox/tools/file_ops.py

@@ -0,0 +1,43 @@
+"""file_ops.py – assembles all file-operation tools into a single list."""
+
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+from langchain_core.tools import BaseTool
+
+from docker_agent_sandbox.tools.copy_file import make_copy_file_tool
+from docker_agent_sandbox.tools.delete_file import make_delete_file_tool
+from docker_agent_sandbox.tools.edit_file import make_edit_file_tool
+from docker_agent_sandbox.tools.grep import make_grep_tool
+from docker_agent_sandbox.tools.list_dir import make_list_dir_tool
+from docker_agent_sandbox.tools.make_dir import make_make_dir_tool
+from docker_agent_sandbox.tools.move_file import make_move_file_tool
+from docker_agent_sandbox.tools.read_file import make_read_file_tool
+from docker_agent_sandbox.tools.search_files import make_search_files_tool
+from docker_agent_sandbox.tools.write_file import make_write_file_tool
+
+if TYPE_CHECKING:
+    from docker_agent_sandbox.sandbox import DockerSandbox
+
+
+def make_file_ops_tools(sandbox: "DockerSandbox") -> list[BaseTool]:
+    """
+    Return file-operation tools bound to *sandbox*.
+
+    All paths are interpreted by the filesystem the model is working in — it
+    can use any absolute path (e.g. ``/tmp/re-agent/output.csv``) or a relative
+    one (resolved against the working directory).
+    """
+    return [
+        make_read_file_tool(sandbox),
+        make_write_file_tool(sandbox),
+        make_edit_file_tool(sandbox),
+        make_list_dir_tool(sandbox),
+        make_delete_file_tool(sandbox),
+        make_move_file_tool(sandbox),
+        make_copy_file_tool(sandbox),
+        make_make_dir_tool(sandbox),
+        make_search_files_tool(sandbox),
+        make_grep_tool(sandbox),
+    ]