assemble_tucker_variation_jets
==============================

.. py:function:: t3toolbox.backend.sampling_derivatives.assemble_tucker_variation_jets(ztildes, dxi_tildes, ww, pp, etas, n_probe, sum_over_probes, chunk_size = 100)

   .. code-block:: python

      def assemble_tucker_variation_jets(
              ztildes, dxi_tildes, ww, pp, etas, n_probe, sum_over_probes,
              chunk_size: typ.Optional[int] = 100,   # W-chunk size; None (or >= W) -> dense. See docs/chunking.md
      ) -> NDArray:


   Assemble the Tucker variation gradient (standard W-chunked form; dense reference
   :py:func:`assemble_tucker_variation_jets_trs`). The milder assembly (two legs nO,N -- the dense
   gradient is a few GB, not the tt-core's hundreds), chunked over W with the same reducer seam (add if
   summed, concat if kept) for a uniform chunked-assembly interface. The only twist: ``ww``/``pp`` have
   no order axis, so W sits at a per-operand axis (2 for the order-carrying jets, 1 for ww/pp).
   ``chunk_size`` None / ragged / multi-W / small W -> runs the dense assembly directly (no chunking).