mimalloc bumped to v3.3.2 (MI_MALLOC_VERSION 30302), which adds static-CRT malloc override on Windows. Makefile: define the real MI_MALLOC_OVERRIDE=1 ONLY on MinGW (enables the static-CRT override entry points — the generic Windows fix for #424); on Unix keep static-link-order override (defining MI_MALLOC_OVERRIDE there compiles alloc-override.c's forwarding defs and crashes macOS with 'mi_free: invalid pointer' since system libs keep the system allocator). The old -DMI_OVERRIDE=1 was never read by mimalloc source — kept as a prod marker. smoke-test.sh: hard-fail on any 'mimalloc: error' in stderr. Regenerated scripts/vendored-checksums.txt for the new tree (security-vendored.sh passes; no dangerous calls in vendored mimalloc).
Martin Vogel
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