v0.94.65

fix: use -march=x86_64_v3 (zig syntax) for cmake zig cc wrappers

The previous -target flag broke host include paths (couldn't find
openssl headers). Zig cc accepts -march with underscore-separated
CPU names (x86_64_v3) while keeping native sysroot paths.

Co-Authored-By: Claude Opus 4.6 (1M context) noreply@anthropic.com