This PR changes herdr’s vendored libghostty-vt Zig build to compile with a baseline CPU target so the nested `zig build` no longer emits instructions from the build host that can crash on older x86_64 machines.
Scattered source updates, isolated context, and manual follow-up across multiple feeds.
Added an explicit compatibility safeguard in the nested Zig invocation by setting `-Dcpu=baseline` for vendored libghostty-vt, and retained the current `-Dtarget` handling needed for sandboxed source builds, changing the package’s effective binary output ABI behavior across x86_64 targets.
Operators using this package on Linux are less likely to see `SIGILL` startup failures when deployments run on slower or older x86_64 CPUs, so they can avoid per-host pinning or emergency rollbacks for apparently random crashes. This is implemented by forcing baseline-codegen in the vendored Zig build path used by `herdr`, and teams should still watch for regressions when the vendored library or Zig compiler defaults change so host-feature leakage does not reappear.
Operators using this package on Linux are less likely to see `SIGILL` startup failures when deployments run on slower or older x86_64 CPUs, so they can avoid per-host pinning or emergency rollbacks for apparently random crashes. This is implemented by forcing baseline-codegen in the vendored Zig build path used by `herdr`, and teams should still watch for regressions when the vendored library or Zig compiler defaults change so host-feature leakage does not reappear.