feat(api): add field encryption, health check specs, and KYC encryption script

- Add field-level encryption service for PII data with AES-256-GCM
- Add health check specs for Prisma and Redis indicators
- Add MCP controller specs
- Add encrypt-existing-kyc migration script for existing KYC data

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/api/src/modules/health/infrastructure/prisma.health.ts

@@ -1,7 +1,7 @@
 import { Injectable } from '@nestjs/common';
 import { HealthCheckError, HealthIndicator, type HealthIndicatorResult } from '@nestjs/terminus';
 // eslint-disable-next-line @typescript-eslint/consistent-type-imports
-import { PrismaService } from '@modules/shared/infrastructure/prisma.service';
+import { PrismaService } from '@modules/shared';
 
 @Injectable()
 export class PrismaHealthIndicator extends HealthIndicator {