Puts qbo-lookup and qbo-oauth Lambdas in seahaven-vpc private subnets
so all outbound traffic routes through NAT Gateway (52.202.83.13).
Required for Intuit app listing IP allowlist.
- CDK stack for Sea Haven Industries internal Slack assistant
- Bedrock Agent (Claude 3.5 Sonnet) with QBO + Google Maps action groups
- VectorKnowledgeBase via @cdklabs/generative-ai-cdk-constructs (AOSS + S3)
- Slack webhook/processor Lambdas with DM-only filtering
- API Gateway HTTP API on bot.seahaven.com
- DynamoDB conversation log with 90-day TTL
- Secrets Manager references for Slack, QBO OAuth, and Google Maps
