feat(phase-2): workstream 8 — Multi-Region Terraform Deployment

AWS environment:
- VPC (3-AZ, public + private subnets, NAT gateways, VPC endpoints for ECR/SM/CW)
- ECS Fargate service (sentryagent/agentidp) — secrets from Secrets Manager
- RDS PostgreSQL 14 (Multi-AZ, encrypted, VPC-internal, storage autoscaling)
- ElastiCache Redis 7 (primary + replica, at-rest + in-transit encryption)
- ALB with HTTPS/443, HTTP→HTTPS redirect, ACM certificate
- Route 53 alias record

GCP environment:
- VPC + private services access + Serverless VPC connector
- Cloud Run service — secrets from Secret Manager
- Cloud SQL PostgreSQL 14 (private IP, no public endpoint)
- Cloud Memorystore Redis 7 (VPC-internal, AUTH enabled)

Shared:
- 4 reusable modules: agentidp (dual AWS/GCP), rds, redis, lb
- No hardcoded secrets; all sensitive vars marked sensitive=true
- terraform.tfvars.example for both environments
- docs/devops/deployment.md — AWS + GCP step-by-step walkthrough, rollback procedures

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

terraform/modules/rds/outputs.tf

@@ -0,0 +1,44 @@
+################################################################################
+# Module: rds
+# Outputs
+################################################################################
+
+output "endpoint" {
+  description = "RDS instance endpoint hostname (without port). Use to construct DATABASE_URL."
+  value       = aws_db_instance.main.address
+}
+
+output "port" {
+  description = "Port the RDS instance listens on (always 5432)."
+  value       = aws_db_instance.main.port
+}
+
+output "db_name" {
+  description = "Name of the database created on the RDS instance."
+  value       = aws_db_instance.main.db_name
+}
+
+output "db_username" {
+  description = "Master username for the RDS instance."
+  value       = aws_db_instance.main.username
+}
+
+output "instance_id" {
+  description = "RDS instance identifier."
+  value       = aws_db_instance.main.identifier
+}
+
+output "instance_arn" {
+  description = "ARN of the RDS instance."
+  value       = aws_db_instance.main.arn
+}
+
+output "security_group_id" {
+  description = "Security group ID attached to the RDS instance. Use to add further ingress rules if needed."
+  value       = aws_security_group.rds.id
+}
+
+output "db_subnet_group_name" {
+  description = "Name of the DB subnet group."
+  value       = aws_db_subnet_group.main.name
+}