Operator ruling: the heuristic that rebuilt unkeyed structs through a
guessed constructor is removed, not guarded. Gone: the Composite value
kind, CultInspectorShape.Composer, CultInspectorModel.Compose and
Composite, the composite-component flag on CultInspectorMember, the IMGUI
composite rebuild path, and the README text about it.
An unkeyed struct is now edited in place through its public fields. A
struct holding state it cannot write in place (a public readonly field or
a get-only auto-property) is Unsupported with a reason naming the member,
until a drawer claims it. Computed get-only properties are not state and
do not lock a struct.
The composite-rejection test goes with the heuristic; the replacement
test pins both lock rules and fails with either removed.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
d03e376411