predicates.ts (missing-fact discipline):
- getTopologyValueBySubject: return -1 sentinel instead of ?? 0
when topology data is missing/unset. NaN and negative values
also treated as missing. Previously returned 0 which was
indistinguishable from root subject ID.
- clippedByPredicate: return 'indeterminate' when clippingRoot < 0
- inStackingContextPredicate: return 'indeterminate' when sc < 0
or refSC < 0 (both subject and reference). Previously treated
missing data as false — a silent wrong answer.
- attachedToScrollContainerPredicate: return 'indeterminate' when
scrollContainer < 0
- escapeClippingChainOfPredicate: return 'indeterminate' when
clippingRoot < 0
extraction.ts (cleanup visibility):
- Promote fast-geometry and CDP cleanup failures from console.debug
(invisible during test execution) to console.warn. Contaminated
pages are now diagnosable without debug-log inspection.
658 tests pass.
John Dvorak
45b5575e53