Group @testable imports at the bottom, per public/rules-swift's swiftformat. A
behavior-preserving import-ordering reformat across 252 files (mostly tests).
--trailingclosures was deliberately not adopted (cosmetic, and swiftformat flags
it as caution-worthy).
Restricting a built-in or user simple type through <simpleContent><restriction>
is invalid (cos-ct-restricts.1 / src-ct.2): a complex type with simple content
is built by extending a simple type, not by restricting one. A unit-test
fixture that restricted xs:string directly was spec-invalid and now restricts a
complexType with simple content instead.
XSTS invalid-schemas-accepted 142 to 137, no other bucket moved.
A simpleContent restriction is (annotation?, (simpleType?, facet*),
(attribute|attributeGroup)*, anyAttribute?) and an extension is
(annotation?, (attribute|attributeGroup)*, anyAttribute?): no model group, no
facets/simpleType in an extension, attributes before a single anyAttribute. The
membership table admitted the names but not the order or the model-group ban, so
a model group inside simpleContent, a facet in an extension, a misordered facet
or attribute, or a second anyAttribute (the ctD family) was accepted.
The derivation's children are matched against the context's ordered slot model,
reusing the slot walk built for complexContent. The structure walk's
per-component dispatch is factored into a helper to keep its complexity bounded.
XSTS: invalid schemas accepted 594 to 580, valid schemas rejected held at 72,
instance buckets unchanged.
