predicates.ts: Add populateDefaultPredicates(registry) accepting any
PredicateRegistry. Add createDefaultPredicateRegistry() factory.
registerDefaultPredicates() now delegates to populateDefaultPredicates
on the global (backward compatible).
logic-engine.ts: Replace globalPredicateRegistry fallback with
createDefaultPredicateRegistry() factory. Each evaluateLogic() call
creates a fresh self-populated registry unless one is explicitly
injected. No shared mutable state between evaluations.
engine.ts: Same pattern for clauses — add populateDefaultClauses(registry),
createDefaultClauseRegistry() factory. registerDefaultClauses() now
delegates to populateDefaultClauses on the global. evaluate() replaces
globalClauseRegistry fallback with createDefaultClauseRegistry().
registry.ts: @deprecated tag on registerClause with migration note.
Both global registries remain for backward compatibility via the
deprecated registerDefault*() functions, but the evaluation engines
no longer depend on them. Every evaluation gets its own registry by
default, so custom predicates registered by one test cannot leak
into another. Tests using explicit registry injection are unaffected.
662 tests pass (315 DSL + 141 core + 149 solver + 57 E2E).
John Dvorak
066ef9f677