AT_DISPATCH to AT_DISPATCH_V2 Converter

This skill helps convert PyTorch's legacy AT_DISPATCH macros to the new AT_DISPATCH_V2 format, as defined in aten/src/ATen/Dispatch_v2.h.

When to use this skill

Use this skill when:

• Converting AT_DISPATCH_* macros to AT_DISPATCH_V2
• Porting ATen kernels to use the new dispatch API
• Working with files in aten/src/ATen/native/ that use dispatch macros
• User mentions "AT_DISPATCH", "dispatch v2", "Dispatch_v2.h", or macro conversion

Quick reference

Old format:

AT_DISPATCH_ALL_TYPES_AND3(kBFloat16, kHalf, kBool, dtype, "kernel_name", [&]() {
  // lambda body
});