Soul could not construct a selection where To.SchemaId decides the
EdgesFor/page_edges order once From, Role and To.RecordKey already
tie, but flagged that as a claim, not a proof - the same shape of
argument that was wrong twice before on this comparator (R-AT).
Traced instead of asserted: TryResolveReferenceTarget (C#) and
resolve_reference_target (Rust) resolve a reference purely from the
citer's schema, the role, and the record key, against the evaluation's
own fixed candidate index (byKey/by_key) - no edge- or caller-specific
input steers which candidate wins. Once From and Role tie (pinning the
citer's schema and the declared target type/leaves) and To.RecordKey
also ties, the resolved row - schema included - is forced identical by
construction, in both runtimes, every time. No mutation can distinguish
it because no input can, so it was deleted rather than recorded as
"equivalent": a component nothing can distinguish is a line every
future reader must reason about for no behavioural gain.
Deletes the To.Descriptor.SchemaId/to.schema_id() ThenBy/then_with from
CultNetSelectionEvaluator.EdgesFor and selection.rs's page_edges sort,
and updates the comments (in-code and the Survivor 5 test block) that
described the old five-key chain.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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