Greptile Summary

This PR fixes libc detection on Alpine Linux (and other musl distros) when gcompat is installed. gcompat places /lib/ld-linux-* shims alongside /lib/ld-musl-*, causing the previous linker-scan logic to misclassify the system as glibc. The fix adds an /etc/os-release-first check that authoritatively identifies known musl distros before falling through to linker detection.

• src/platform.rs gains a new detect_libc() function with a three-stage detection order (os-release → linker files → compile-time target_env), plus musl_from_os_release() that correctly skips blank/comment lines via continue.
• The duplicate env_type() in crates/vfox/src/config.rs is removed; vfox_plugin.rs now uses settings.libc() (i.e. MISE_LIBC) first, then falls back to the new detect_libc().

Confidence Score: 5/5

Safe to merge. The os-release check correctly short-circuits linker detection for known musl distros, and MISE_LIBC override precedence is preserved at every call site.

The core fix is narrow and well-tested: musl_from_os_release handles blank lines and comments with continue, the MISE_LIBC env-var override is checked before detect_libc() in both Platform::current() and vfox_plugin.rs, and the duplicate detection code in the vfox crate has been cleanly removed.

No files require special attention.

Important Files Changed

_{Reviews (4): Last reviewed commit: "fix(backend): adjust libc detection for ..." | Re-trigger Greptile}