Amalthea.jl v1.0.0

[vdiego28]

Amalthea.jl v1.0.0

First stable release, and first release under the new name: this package was
previously developed as Luna-Rust.jl, a performance-focused fork of
Luna.jl. The Julia API remains fully
backwards-compatible with Luna.jl; performance-critical numerical kernels are
offloaded to a native Rust backend (luna-rust), called transparently via
ccall — no Rust knowledge is required to use the package.

Added

• Native-Rust resident stepper (RustNativeStepper / NativeSim): the
  entire RK45 hot loop — field, RK scratch buffers, and FFTW plans — lives in
  Rust for the duration of a solve, eliminating the per-stage Julia
  callback round-trip. Covers mode-averaged, radial, modal, and free-space
  geometries; RealGrid and EnvGrid; Kerr, plasma (PPT/ADK), and Raman
  (including :SiO2 intermediate-broadening) nonlinearities; gas mixtures;
  z-dependent (graded-core, tapered, multi-point gradient) linear operators;
  and shot noise. Falls back to the Julia stepper automatically for any
  configuration outside this scope (NativeIneligible).
• Runtime hardware dispatch: automatic selection of CUDA → Vulkan →
  AVX-512/Apple AMX → AVX2/NEON → portable scalar, including an opt-in
  GPU-resident backend (LUNA_USE_RUST_CUDA_NATIVE=1).
• Per-kernel Rust acceleration (opt-in via LUNA_USE_RUST_* toggles,
  used independently of the resident stepper): PPT ionisation rate,
  time-domain Raman (ADE exponential integrator), Zeisberger/Marcatili
  dispersion, and QDHT batch transforms.
• Python bindings (python/, juliacall-based, pip-installable) with a
  numpy-backed output wrapper and ASCII/Unicode keyword translation
  (lambda0 ↔ λ0, etc.).
• Prebuilt binary releases: tagged releases publish libluna_rust for
  Linux, macOS, and Windows; deps/build.jl downloads the matching prebuilt
  library for the installed version before falling back to a local
  cargo build.
• Cross-platform scan-queue locking (flock on Unix, LockFileEx on
  Windows), validated by CI on all three platforms.

Changed

• Package renamed to Amalthea.jl (previously Luna-Rust.jl, itself a fork
  of Luna.jl); citation metadata updated (Zenodo DOI), new package UUID
  minted, registered as a new package in the Julia General registry.

Fixed

• Polarisation.ellipse angle calculation (was always 0; now
  angle(Q + 1im*U)/2), and other fork-vs-upstream parity fixes — see
  docs/dev/REVIEW.md for the full audit.
• Shell/command-injection hardening in Scans.jl's SSH/Slurm/Condor
  submission paths (Cmd arrays instead of interpolated shell strings).

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See CHANGELOG.md for the full changelog and
docs/dev/BACKLOG.md / docs/dev/native-port/PORT_LOG.md
for the full phase-by-phase native-port development history.

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This discussion was created from the release Amalthea.jl v1.0.0.