feat(service): P6.2 RuleEngine + RouteSimulator (deterministic, preview-first)

Keyword moderation flags; deny-by-default for protected (CHILD) destinations,
REVIEW for other flags/requiresReview, ALLOW otherwise; versioned rulepack for
replay. Simulate renders per-format previews + persists decisions, NEVER sends.
BDD (party@9pm → children DENY / adult+seniors REVIEW / 0 sends) + replay green.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packages/iios-service/src/routing/routing.module.ts

@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common';
+import { RuleEngine } from './rule-engine';
+import { RouteSimulator } from './route-simulator';
+
+@Module({
+  providers: [RuleEngine, RouteSimulator],
+  exports: [RuleEngine, RouteSimulator],
+})
+export class RoutingModule {}