Add cross-service alert correlation system FRE-4500

- Unified alert types (AlertSource, AlertCategory, CorrelationStatus, EntityType)
- NormalizedAlert and CorrelationGroup Prisma models
- AlertNormalizer for all 4 services (DarkWatch, SpamShield, VoicePrint, CallAnalysis)
- CorrelationEngine with temporal + entity-based correlation detection
- CorrelationService orchestrator with dashboard API
- Correlation API routes (/api/v1/correlation/*)
- Service emitters wired to DarkWatch, SpamShield, VoicePrint
- pnpm workspace config for monorepo

packages/api/src/routes/index.ts

@@ -24,3 +24,10 @@ export function voiceprintRoutes(fastify: FastifyInstance) {
     root.register(voiceprint);
   }, { prefix: "/api/v1/voiceprint" });
 }
+
+export function correlationRoutes(fastify: FastifyInstance) {
+  fastify.register(async (root) => {
+    const correlation = (await import("./correlation.routes")).correlationRoutes;
+    root.register(correlation);
+  }, { prefix: "/api/v1/correlation" });
+}