Add Info Broker Removal service (FRE-5402)

New service for helping clients remove personal listings from data broker sites.

Service features:
- BrokerRegistry: Catalog of 20+ data brokers with removal methods
- RemoveBrokersService: Core service for scanning, creating removal requests,
  submitting removals, and verifying completions
- RemoveBrokersScheduler: Automated processing of pending removals and
  verification of completed removals
- BrokerAlertPipeline: Alert integration for listing discoveries and removal status

API endpoints (/removebrokers):
- GET /brokers - List available data brokers
- GET /status - Get removal request status and stats
- POST /scan - Scan for personal listings across brokers
- POST /request - Create a new removal request
- GET /request/:id - Get specific removal request details
- DELETE /request/:id - Cancel a removal request
- POST /process - Trigger processing of pending removals
- POST /verify/:id - Manually verify a removal completion

DB models: InfoBroker, RemovalRequest, BrokerListing
Types: BrokerStatus, RemovalStatus, RemovalMethod, and related interfaces

services/removebrokers/src/BrokerAlertPipeline.ts

@@ -0,0 +1,69 @@
+import { AlertSource, AlertCategory, Severity, EntityType } from "@shieldai/types";
+
+export interface BrokerAlertInput {
+  userId: string;
+  brokerName: string;
+  brokerId: string;
+  category: AlertCategory;
+  severity: Severity;
+  title: string;
+  description: string;
+  entities: Array<{ type: EntityType; value: string }>;
+  metadata?: Record<string, unknown>;
+}
+
+export class BrokerAlertPipeline {
+  async sendListingFoundAlert(input: BrokerAlertInput) {
+    const alert = {
+      source: AlertSource.INFO_BROKER,
+      category: AlertCategory.INFO_BROKER_LISTING,
+      severity: input.severity,
+      userId: input.userId,
+      title: input.title,
+      description: input.description,
+      entities: input.entities,
+      sourceAlertId: `broker_listing_${input.brokerId}_${Date.now()}`,
+      payload: {
+        brokerId: input.brokerId,
+        brokerName: input.brokerName,
+        ...input.metadata,
+      },
+      timestamp: new Date(),
+    };
+
+    return this.normalizeAndSend(alert);
+  }
+
+  async sendRemovalStatusAlert(input: BrokerAlertInput) {
+    const alert = {
+      source: AlertSource.INFO_BROKER,
+      category: AlertCategory.INFO_BROKER_REMOVAL,
+      severity: input.severity,
+      userId: input.userId,
+      title: input.title,
+      description: input.description,
+      entities: input.entities,
+      sourceAlertId: `broker_removal_${input.brokerId}_${Date.now()}`,
+      payload: {
+        brokerId: input.brokerId,
+        brokerName: input.brokerName,
+        ...input.metadata,
+      },
+      timestamp: new Date(),
+    };
+
+    return this.normalizeAndSend(alert);
+  }
+
+  private async normalizeAndSend(alert: any) {
+    try {
+      const { correlationPipeline } = await import("@shieldai/correlation");
+      return correlationPipeline.normalizeAlert(alert);
+    } catch {
+      console.error("[BrokerAlert] Failed to send alert:", alert.sourceAlertId);
+      return alert;
+    }
+  }
+}
+
+export const brokerAlertPipeline = new BrokerAlertPipeline();