fix(server.py): improve error handling by chaining exceptions for better debugging context

chore(pyproject.toml): update linter configuration keys for consistency and clarity

Author: tumf

mcp_shell_server/server.py

@@ -96,7 +96,7 @@ async def call_tool(name: str, arguments: Any) -> Sequence[TextContent]:
     except Exception as e:
         logger.error(traceback.format_exc())
         logger.error(f"Error during call_tool: {str(e)}")
-        raise RuntimeError(f"Error executing command: {str(e)}")
+        raise RuntimeError(f"Error executing command: {str(e)}") from e
 
 
 async def main() -> None:

pyproject.toml

@@ -41,15 +41,15 @@ testpaths = "tests"
 asyncio_default_fixture_loop_scope = "function"
 
 [tool.ruff]
-select = [
+lint.select = [
     "E",  # pycodestyle errors
     "F",  # pyflakes
     "W",  # pycodestyle warnings
     "I",  # isort
     "C",  # flake8-comprehensions
     "B",  # flake8-bugbear
 ]
-ignore = [
+lint.ignore = [
     "E501",  # line too long, handled by black
     "B008",  # do not perform function calls in argument defaults
     "C901",  # too complex