Async runtime composition (tokio + async-std + smol + embassy + glommio); unsafe Rust per the Rustonomicon; FFI per ISO/IEC 9899 (C23) + ISO/IEC 14882 (C++23) + cxx + bindgen + cbindgen; performance optimisation per LLVM IR + ThinLTO + PGO + target-feature; WebAssembly per Core 2.0 (W3C Recommendation) + WASI Preview 2 + Component Model; procedural macros per syn + quote + proc-macro2; no-std + alloc + embedded per the Rust Embedded Working Group + embedded-hal; Edition Guide 2015 → 2024 migration envelope.

📐 Conformance §1–§4

§1 Phase compliance — every project ships PHASE-1 through PHASE-4 envelopes.

§2 Toolchain envelope — pin via rust-toolchain.toml on stable ≥1.83.

§3 Soundness envelope — every unsafe block carries // SAFETY: per std-lib convention; cargo miri test for unsafe-touching tests.

§4 Cross-standard composition — composes with WIA-RUST-LEARN + WIA-OMNI-API + WIA-AIR-SHIELD.