chore(agent-runner): stack on cleaned tool runtime fixes

src/langbot/pkg/box/workspace.py

@@ -157,12 +157,6 @@ def wrap_python_command_with_env(command: str, *, mount_path: str = '/workspace'
         export TMP="$_LB_TMP_DIR"
         export PIP_CACHE_DIR="$_LB_PIP_CACHE_DIR"
 
-        _LB_SYSTEM_PYTHON="$(command -v python3 || command -v python || true)"
-        if [ -z "$_LB_SYSTEM_PYTHON" ]; then
-          echo "No Python interpreter found for workspace bootstrap" >&2
-          exit 1
-        fi
-
         _lb_python_meta() {{
           "$_LB_SYSTEM_PYTHON" - <<'PY'
         import hashlib