fix: replace as any casts in AST walkers with typed guards + add options to PredicateCall
logic-ast.ts: add optional options?: Record<string, unknown> to
PredicateCall interface. Previously any predicate needing options
(e.g., space, dimension, tolerance) smuggled them via (node as any)
.options, bypassing the type system entirely.
extraction.ts: replace all 18 (node as any).body/.left/.right etc.
casts with proper type guard narrowing (isForAllFormula, isExistsFormula,
isAndFormula, isOrFormula, isNotFormula, isImpliesFormula, isPredicateCall).
Affected functions: collectPredicates, formulaNeedsCssLengthMetrics,
usesLayoutSpace, computeRequiredFacts & nestDomAncestry, getSelectorsFromFormula.
595 SDK + 57 E2E tests pass.
John Dvorak
aa69ddc52f