The port is blocked on what 0x3003 is, having only 0x3002 in its menu-item
rule. The two differ in bit 0 alone. Disc-wide over every .pak: kind&1 ==
has_parent agrees on 15493 elements with 0 counterexamples -- 192/192 for
0x3003, 778/778 for 0x3002, and the same for every other kind. The flag is
exactly redundant with the +32 parent field.
So the bit that differs carries no role information: 0x3003 is a 0x3002
button record that is parented. That replaces the port's circumstantial case
with the field, which is what they asked for rather than a widened rule.
Flags what this does NOT license: it is not a decode of "is a menu item",
and 0x73002/0x73003 (160 elements) carry an undecoded 0x70000 that any
mask-based rule silently decides about.
Adds examples/kind_bit0_census.rs.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Jc4pciRArGHfxGGhEbwp5t
f7cc0bd283