Packager auto-generates the GitHub release body from git log since the
last tag. The first release has no prior tag, so it walks all history
and overshoots GitHub's 125k-char body limit. Ship a curated
CHANGELOG.md with the highlights and point packager at it via
.pkgmeta's manual-changelog directive. Subsequent releases diff
tag-to-tag and stay small — either delete both files after this
release lands to restore auto-gen, or keep maintaining CHANGELOG.md
manually.
