- Remove C emission, debugging options, and automatic backend fallback. - Complete LLVM lowering and native bootstrap coverage across supported targets. - Link executables and libraries with precompiled C runtime packs, including iOS and Android.
* perf: preseed native build caches - Warm runtime, TLS, and dynamic-engine artifacts during npm installation - Add an explicit toolchain-aware cache warm command for images and CI - Move vendor artifacts into the user cache and build QuickJS directly * fix: harden native cache warming * fix: promote staged vendor cache entries * fix: isolate shared native cache entries * fix: validate shared vendor cache artifacts