feat: rules engine — json-rules-engine integration with worklist scoring

- Self-contained NestJS module: types, storage (Redis+JSON), fact providers, action handlers
- PriorityConfig CRUD (slider values for task weights, campaign weights, source weights)
- Score action handler with SLA multiplier + campaign multiplier formula
- Worklist consumer: scores and ranks items before returning
- Hospital starter template (7 rules)
- REST API: /api/rules/* (CRUD, priority-config, evaluate, templates)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/rules-engine/rules-engine.module.ts

@@ -0,0 +1,14 @@
+// src/rules-engine/rules-engine.module.ts
+
+import { Module } from '@nestjs/common';
+import { RulesEngineController } from './rules-engine.controller';
+import { RulesEngineService } from './rules-engine.service';
+import { RulesStorageService } from './rules-storage.service';
+import { WorklistConsumer } from './consumers/worklist.consumer';
+
+@Module({
+    controllers: [RulesEngineController],
+    providers: [RulesEngineService, RulesStorageService, WorklistConsumer],
+    exports: [RulesEngineService, RulesStorageService, WorklistConsumer],
+})
+export class RulesEngineModule {}