utv_apply_transpose_from_sweep
==============================

.. py:function:: t3toolbox.backend.utv_sampling.utv_apply_transpose_from_sweep(residual, frame_sweep, sum_over_probes=True)

   .. code-block:: python

      def utv_apply_transpose_from_sweep(
              residual,     # apply residual, shape=W+K+C (a scalar per stack element)
              frame_sweep,   # = utv_precompute_apply_frame_sweep(...)
              sum_over_probes=True,
      ):  # -> bare variation supercore pair (dU_tilde, dG_tilde); stack K_new + C


   Transpose ``𝒥ᵀ`` of the all-modes apply reusing the frame sweep (the bare adjoint; no gauge ``Π`` --
   the geometry projects). Shares :py:func:`apply.tv_apply_transpose_from_sweep`; returns the bare gradient
   supercores ``(dU_tilde, dG_tilde)`` (the caller's ``project`` attaches the variation masks).