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🛠️ Refactor: Neuroscience Strategy & Diffusion Safety#449

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fderuiter wants to merge 2 commits intomainfrom
refactor/neuroscience-diffusion-safety-9594661652775542424
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🛠️ Refactor: Neuroscience Strategy & Diffusion Safety#449
fderuiter wants to merge 2 commits intomainfrom
refactor/neuroscience-diffusion-safety-9594661652775542424

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@fderuiter
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This PR refactors the biology module to improve modularity and safety.

Neuroscience Module:

  • Introduced GatingKinetics trait to allow custom ion channel dynamics.
  • HodgkinHuxleyModel now uses Arc<dyn GatingKinetics>, enabling dependency injection of kinetic strategies (OCP).
  • Removed Copy derivation from HodgkinHuxleyParameters as it now holds an Arc.

Diffusion Module:

  • Replaced unsafe pointer arithmetic in FiniteDifference1D with safe Rust iterators (windows, zip).
  • Ensures memory safety without sacrificing the sliding window optimization logic.

Verification:

  • Ran cargo check and cargo test.
  • test_turing_system_logic_preservation passed, confirming diffusion logic remains correct.

PR created automatically by Jules for task 9594661652775542424 started by @fderuiter

- Implemented `GatingKinetics` trait (Strategy Pattern) in `neuroscience` to decouple ion channel logic from `HodgkinHuxleyModel`.
- Replaced hardcoded kinetics in `HodgkinHuxleyModel` with `Arc<dyn GatingKinetics>`.
- Updated `HodgkinHuxleyParameters` to remove `Copy` and `PartialEq` derivations, using `Clone` where necessary.
- Refactored `FiniteDifference1D::apply` in `diffusion` module to use safe `windows(3)` and `zip` iterators, removing all `unsafe` blocks while preserving logic.
- Verified changes with existing tests, including `test_turing_system_logic_preservation`.

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
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👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

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Ran `cargo fmt` to address:
- Multiline formatting for `if/else` block in `diffusion.rs`
- Extra newline removal in `model.rs`

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
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