HOW TO INSTALL cuDNN (PORTABLE METHOD)
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Since cuDNN requires an NVIDIA Developer login, please follow these steps:

1. Download the cuDNN ZIP for CUDA 12.x from:
   https://developer.nvidia.com/cudnn

2. Extract the downloaded ZIP.

3. Copy the CONTENTS of the folders as follows:
   - Copy everything from the ZIP's 'bin' folder to: D:\code\apps\devtools\cudnn\bin
   - Copy everything from the ZIP's 'include' folder to: D:\code\apps\devtools\cudnn\include
   - Copy everything from the ZIP's 'lib/x64' folder to: D:\code\apps\devtools\cudnn\lib\x64

4. Restart your terminal (or run activate_env.bat).

WHY THIS METHOD?
This keeps your C: drive clean. Our devtools environment will automatically 
find these files in the 'D:\code\apps\devtools\cudnn' folder and use them
for PyTorch and Unreal Engine development.