The two monolithic XSD content/identity rules only satisfied the OpenAPIKit
validation idiom at the wrong granularity: no per-constraint removability,
no isolable failing/near-miss tests. Split them into 32 named rules, each
finding tagged at its origin and cached per XSDContext so the walk still
runs once per document (the #101 decision against duplicating XSD's
recursive type resolution still holds). Wired the streaming path's ID/IDREF
and identity checks through the same framework instead of calling the
validators imperatively, and added the unwrapAndLookup combinator the rule
already named as required.
Also includes the mandated repo-wide swiftformat/swiftlint pass.
Convert the three names/UPA/notation-pass compile checkers to located
findings so each error attaches to its declaring node instead of the schema
root (#169): component-name uniqueness underlines the second duplicate global,
identity-constraint name uniqueness underlines the second constraint, a
keyref whose refer names no key/unique (or whose arity differs) underlines
the keyref (KeyrefInfo gains the keyref node), a Unique Particle Attribution
violation underlines the ambiguous content-model group, and notation
validity underlines the notation or enumeration.
Every predicate, aggregation order, reason string, and the message-dedup of
the UPA pass are unchanged; only the location each finding carries differs,
verified conformance-neutral by the full XSTS suite (14383 groups, pinned
counts unchanged). The findUniqueIndices circular-import (rootIndex)
workaround is left byte-identical, since it governs which containers are
examined, not where findings locate. The three checkers had exactly one
caller each (their dispatch), so each is renamed in place and the .unlocated
wrap dropped. Adds a located-diagnostics test per sub-check.
A notation declaration's content model is (annotation?): it may carry only an
optional annotation child. Any other element child, or any non-whitespace
character content, is now rejected.
XSTS invalid-schemas-accepted 214 to 211, no other bucket moved.
