demos/{rtx-mre,rtx-bioheat,rtx-hemodynamics} defaulted to [cpu, openblas, metal],
which broke cargo build --workspace on BOTH platforms:
- openblas: no system lib on macOS + buggy on arm64 (sgemm returns zeros, per rtx-tensor note)
- metal: objc2 deps are macOS-only, so enabling it on Linux fails to resolve
Default to cpu only; openblas/metal/accelerate remain opt-in per platform.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
The workspace root was upgraded to thiserror = "2" in an earlier commit,
but 56 per-crate Cargo.toml files still independently declared "1.0".
These crates do not use workspace.dependencies inheritance for thiserror.
All updated to thiserror = "2" for complete fleet alignment.
Includes: rtx-backend, rtx-tensor, rtx-losses, rtx-backend-cuda/rocm/metal,
all training crates (rtx-auto, rtx-rl, rtx-distributed, rtx-federated, etc.),
specialized crates (rtx-science, rtx-platform, rtx-nmf, rtx-neuro-*),
production crates (rtx-streaming, rtx-serving-api), and all demo crates.
cargo check --workspace: PASSES.