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  1. Read .jules/bolt.md (creating it if missing) and append a journal entry about avoiding tensor metadata clones during reverse-mode autograd passes by using Option::take() and value-based accumulation. Verify the creation/modification using cat.
  2. Modify crates/aether-core/src/ml/autograd.rs to change accumulate_grad signature to take grad: Tensor by value and update its implementation. Also, refactor Context::backward to use grads[out.index].take() for grad_out instead of .clone(), pass computed gradients by value to accumulate_grad, and re-insert grad_out into grads[out.index]. Verify the modification using git diff.
  3. Complete pre-commit steps to ensure proper testing, verification, review, and reflection are done.
  4. Run cargo test -p aether-core to verify everything works correctly. Submit a PR with title ⚡ Bolt: Optimize backward pass gradient accumulation and include What, Why, Impact, and Measurement in the description.