[Bug] Native binary crashes with SIGILL on x86-64 CPUs without AVX2 support

Bug Description
Claude Code npm package (>= 2.1.113) crashes with SIGILL on x86-64 CPUs without AVX2

Since 2.1.113 the npm package ships a Bun-compiled native binary
(bin/claude.exe) instead of the Node-based cli.js. On CPUs without AVX2 it
dies immediately with SIGILL.

Repro:

• CPU: Intel Core i7-3520M (Ivy Bridge, 2012) - no AVX2

leaf7 features: RDWRFSGS SMEP ERMS MDCLEAR IBRS STIBP L1DF SSBD

• macOS 13.7.8, Node v22.23.1, npm prefix ~/.local
• npm i -g @anthropic-ai/claude-code@2.1.220
• claude --version -> exit code 132 (SIGILL), no output
• 2.1.112 (last Node-based release) works fine on the same machine

Notes:

• cli-wrapper.cjs only spawns the native binary, so --ignore-scripts is not

a workaround.
-…
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