Dumps made before the signed-read change store values like -1 as
4294967295. write_long now converts 2147483648..4294967295 to the
signed equivalent (same bytes), so existing community dumps still
pack. Verified: all 10332 files of an older dump repack identical.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
List every field now read signed, the grant key hashing, the effect on
the sample cache, compatibility with older dumps, related parser fixes
and open items, for readers of the unpacked JSON.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>