Vijay Janapa Reddi 4246dc1948 Remove all Variable references - pure Tensor system with clean autograd ...

Major refactoring:
- Eliminated Variable class completely from autograd module
- Implemented progressive enhancement pattern with enable_autograd()
- All modules now use pure Tensor with requires_grad=True
- PyTorch 2.0 compatible API throughout
- Clean separation: Module 01 has simple Tensor, Module 05 enhances with gradients
- Fixed all imports and references across layers, activations, losses
- Educational clarity: students learn modern patterns from day one

The system now follows the principle: 'One Tensor class to rule them all'
No more confusion between Variable and Tensor - everything is just Tensor!

2025-09-30 00:08:31 -04:00

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layers_dev.py

Remove all Variable references - pure Tensor system with clean autograd

2025-09-30 00:08:31 -04:00