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

services/voiceprint/package.json

@@ -9,8 +9,9 @@
     "lint": "eslint src/"
   },
   "dependencies": {
-    "@shieldai/db": "0.1.0",
-    "@shieldai/types": "0.1.0",
+    "@shieldai/db": "workspace:*",
+    "@shieldai/types": "workspace:*",
+    "@shieldai/correlation": "workspace:*",
     "node-cache": "^5.1.2"
   },
   "exports": {