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/facts/agent-facts.provider.ts

@@ -0,0 +1,18 @@
+// src/rules-engine/facts/agent-facts.provider.ts
+
+import type { FactProvider, FactValue } from '../types/fact.types';
+
+export class AgentFactsProvider implements FactProvider {
+    name = 'agent';
+
+    async resolveFacts(agent: any): Promise<Record<string, FactValue>> {
+        return {
+            'agent.status': agent.status ?? 'OFFLINE',
+            'agent.activeCallCount': agent.activeCallCount ?? 0,
+            'agent.todayCallCount': agent.todayCallCount ?? 0,
+            'agent.skills': agent.skills ?? [],
+            'agent.campaigns': agent.campaigns ?? [],
+            'agent.idleMinutes': agent.idleMinutes ?? 0,
+        };
+    }
+}