Place QBO Lambdas in VPC for static outbound IP

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.context.json

@@ -2,5 +2,50 @@
   "hosted-zone:account=328440206208:domainName=seahaven.com:region=us-east-1": {
     "Id": "/hostedzone/Z06652411XKH89KTZD3XA",
     "Name": "seahaven.com."
+  },
+  "vpc-provider:account=328440206208:filter.vpc-id=vpc-0d3d4b67bd0cf8a68:region=us-east-1:returnAsymmetricSubnets=true": {
+    "vpcId": "vpc-0d3d4b67bd0cf8a68",
+    "vpcCidrBlock": "10.20.0.0/16",
+    "ownerAccountId": "328440206208",
+    "availabilityZones": [],
+    "vpnGatewayId": "vgw-073737d44762dffc2",
+    "subnetGroups": [
+      {
+        "name": "Private",
+        "type": "Private",
+        "subnets": [
+          {
+            "subnetId": "subnet-04e38c507e96f1926",
+            "cidr": "10.20.30.0/24",
+            "availabilityZone": "us-east-1a",
+            "routeTableId": "rtb-06a2f56f492b9b4de"
+          },
+          {
+            "subnetId": "subnet-0a0b4fc6f296dfba5",
+            "cidr": "10.20.40.0/24",
+            "availabilityZone": "us-east-1b",
+            "routeTableId": "rtb-01e152fe5cabca7d6"
+          }
+        ]
+      },
+      {
+        "name": "Public",
+        "type": "Public",
+        "subnets": [
+          {
+            "subnetId": "subnet-0eea820effe1b3ae5",
+            "cidr": "10.20.10.0/24",
+            "availabilityZone": "us-east-1a",
+            "routeTableId": "rtb-0f2232493a5c43fe8"
+          },
+          {
+            "subnetId": "subnet-0012f5895182c1580",
+            "cidr": "10.20.20.0/24",
+            "availabilityZone": "us-east-1b",
+            "routeTableId": "rtb-0f2232493a5c43fe8"
+          }
+        ]
+      }
+    ]
   }
 }

lib/constructs/bedrock-agent.ts

@@ -4,6 +4,7 @@ import * as iam from 'aws-cdk-lib/aws-iam';
 import * as lambda from 'aws-cdk-lib/aws-lambda';
 import * as lambdaNodejs from 'aws-cdk-lib/aws-lambda-nodejs';
 import * as dynamodb from 'aws-cdk-lib/aws-dynamodb';
+import * as ec2 from 'aws-cdk-lib/aws-ec2';
 import * as secretsmanager from 'aws-cdk-lib/aws-secretsmanager';
 import * as bedrock from 'aws-cdk-lib/aws-bedrock';
 import * as path from 'path';
@@ -13,6 +14,8 @@ export interface BedrockAgentProps {
   region: string;
   knowledgeBaseId: string;
   knowledgeBaseArn: string;
+  vpc: ec2.IVpc;
+  lambdaSecurityGroup: ec2.ISecurityGroup;
 }
 
 export class BedrockAgentConstruct extends Construct {
@@ -51,6 +54,9 @@ export class BedrockAgentConstruct extends Construct {
       timeout: cdk.Duration.seconds(30),
       memorySize: 256,
       environment: { QBO_SECRET_ARN: qboSecret.secretArn },
+      vpc: props.vpc,
+      vpcSubnets: { subnetType: ec2.SubnetType.PRIVATE_WITH_EGRESS },
+      securityGroups: [props.lambdaSecurityGroup],
       bundling,
     });
     qboSecret.grantRead(this.qboLambda);

lib/constructs/slack-handler.ts

@@ -5,6 +5,7 @@ import * as lambdaNodejs from 'aws-cdk-lib/aws-lambda-nodejs';
 import * as apigatewayv2 from 'aws-cdk-lib/aws-apigatewayv2';
 import { HttpLambdaIntegration } from 'aws-cdk-lib/aws-apigatewayv2-integrations';
 import * as dynamodb from 'aws-cdk-lib/aws-dynamodb';
+import * as ec2 from 'aws-cdk-lib/aws-ec2';
 import * as iam from 'aws-cdk-lib/aws-iam';
 import * as secretsmanager from 'aws-cdk-lib/aws-secretsmanager';
 import * as route53 from 'aws-cdk-lib/aws-route53';
@@ -19,6 +20,8 @@ export interface SlackHandlerProps {
   agentAliasId: string;
   conversationTable: dynamodb.Table;
   wildcardCertArn: string;
+  vpc: ec2.IVpc;
+  lambdaSecurityGroup: ec2.ISecurityGroup;
 }
 
 export class SlackHandlerConstruct extends Construct {
@@ -124,6 +127,9 @@ export class SlackHandlerConstruct extends Construct {
         QBO_CLIENT_SECRET: '{{resolve:secretsmanager:seahaven/qbo/oauth:SecretString:clientSecret}}',
         REDIRECT_URI: 'https://bot.seahaven.com/qbo/callback',
       },
+      vpc: props.vpc,
+      vpcSubnets: { subnetType: ec2.SubnetType.PRIVATE_WITH_EGRESS },
+      securityGroups: [props.lambdaSecurityGroup],
       bundling: {
         externalModules: ['@aws-sdk/*'],
         minify: true,

lib/seahaven-slack-bot-stack.ts

@@ -1,4 +1,5 @@
 import * as cdk from 'aws-cdk-lib';
+import * as ec2 from 'aws-cdk-lib/aws-ec2';
 import { Construct } from 'constructs';
 import { ConversationLogConstruct } from './constructs/conversation-log';
 import { KnowledgeBaseConstruct } from './constructs/knowledge-base';
@@ -21,6 +22,16 @@ export class SeahavenSlackBotStack extends cdk.Stack {
       );
     }
 
+    // ── VPC (existing) — QBO Lambdas run here for static outbound IP ──────────
+    const vpc = ec2.Vpc.fromLookup(this, 'SeahavenVpc', { vpcId: 'vpc-0d3d4b67bd0cf8a68' });
+
+    const lambdaSecurityGroup = new ec2.SecurityGroup(this, 'QBOLambdaSG', {
+      vpc,
+      securityGroupName: 'seahaven-qbo-lambda',
+      description: 'QBO Lambdas - outbound HTTPS only',
+      allowAllOutbound: true,
+    });
+
     // ── Conversation history (DynamoDB) ───────────────────────────────────────
     const conversationLog = new ConversationLogConstruct(this, 'ConversationLog');
 
@@ -36,6 +47,8 @@ export class SeahavenSlackBotStack extends cdk.Stack {
       region: this.region,
       knowledgeBaseId: knowledgeBase.knowledgeBase.knowledgeBaseId,
       knowledgeBaseArn: knowledgeBase.knowledgeBase.knowledgeBaseArn,
+      vpc,
+      lambdaSecurityGroup,
     });
 
     // ── Notion → KB daily sync (EventBridge + Lambda) ────────────────────────
@@ -70,6 +83,8 @@ export class SeahavenSlackBotStack extends cdk.Stack {
       agentAliasId: bedrockAgent.agentAlias.attrAgentAliasId,
       conversationTable: conversationLog.table,
       wildcardCertArn,
+      vpc,
+      lambdaSecurityGroup,
     });
 
     // ── Stack outputs ─────────────────────────────────────────────────────────