TensorView::operator- does not compile; TensorViewPlanarComplex::reset ignores its size parameter

Description

Two small public-API breakages in the tensor view headers, both verified by compiling against include/ only.

1. TensorView::operator-(TensorCoord) cannot compile

include/cutlass/tensor_view.h ~lines 258-267 constructs a base-class object but returns it as the derived type:

TensorView operator-(TensorCoord const& b) const {
    TensorRef result(*this);                       // base-class alias
    result.add_pointer_offset(-this->offset(b));
    return result;                                 // no base->derived conversion
}

tensor_view.h:266:12: error: could not convert 'result' from
'cutlass::TensorRef<float, cutlass::layout::RowMajor>' to 'cutlass::TensorView<float, cutlass::layout::RowMajor>'

operator+, +=, -= are all fine; this one looks like a copy-paste from TensorRef. The identical pattern exists in include/cutlass/tensor_view_planar_complex.h ~lines 250-259.

2. TensorViewPlanarComplex::reset ignores its size parameter

include/cutlass/tensor_view_planar_complex.h ~lines 162-165:

void reset(Element* ptr, Layout const &layout, LongIndex imaginary_stride, TensorCoord size) {
    Base::reset(ptr, layout, imaginary_stride);
    this->resize(extent_);        // self-assignment; parameter 'size' never used
}

After pv.reset(pbuf, RowMajor(8), 32, {8,8}) on a view that was 4x4, the pointer and stride update but extent() still reports 4x4. Plain TensorView::reset correctly resizes to its argument.

Suggested fix

Mirror operator+: construct TensorView result(*this); result.add_pointer_offset(...); return result; (and the planar-complex analogue). In reset, call this->resize(size);.

Start in include/cutlass/tensor_view.h and include/cutlass/tensor_view_planar_complex.h, comparing the broken operator- implementations with operator+. Inspect the reset overload in tensor_view_planar_complex.h and compile the include-only reproductions described in the issue. Done means both operator- overloads compile and reset updates the view extent to the supplied size.