[ThomasK33]

Why

coder/agent-tty#179 (native mouse input) is blocked because the v0.1.0-beta.4 linux-x64 prebuild crashes with Illegal instruction (SIGILL) on CPUs without AVX-512. This release ships the fix from #55, so agent-tty and every other x86-64 consumer can load the prebuild again.

What changed

• package.json and package-lock.json go from 0.1.0-beta.4 to 0.1.0-beta.5. The branch name matches the version, so publish.yml creates v0.1.0-beta.5 after merge.
• The release-changelog workflow adds the CHANGELOG entry to this branch.

Scope

• Included since beta.4: fix(scripts): build libghostty-vt for the baseline CPU #55. libghostty-vt builds for Zig's baseline CPU, the release workflow runs the linux-x64 prebuild under an emulated Haswell CPU (AVX2, no AVX-512) before upload, and the macos-arm64 prebuild builds on macos-15 because GitHub retires macos-14 on 2026-11-02.

Blast Radius

The merge publishes 0.1.0-beta.5 to npm under the beta dist-tag. The JavaScript API and the native addon source are unchanged since beta.4. Only the compiler CPU target and the macOS build runner change. If the emulated CPU check fails in publish.yml, the job stops before upload and nothing publishes.

Verification

• fix(scripts): build libghostty-vt for the baseline CPU #55 carries an independent PASS+NOTES verdict: 0 AVX-512 instructions in a baseline build, 14870 in the beta.4 prebuild, and the beta.4 prebuild exits 1 under the emulated CPU check.
• After publish I check the npm tarball: AVX-512 count of the linux-x64 addon, the emulated CPU check on the published prebuild, and the macOS addon's minimum OS version against beta.4.

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