chore(openspec): archive engineering-docs and phase-2-production-ready changes

- engineering-docs → archive/2026-03-29-engineering-docs (63/63 tasks complete)
- phase-2-production-ready → archive/2026-03-29-phase-2-production-ready (89/89 tasks complete)
- openspec/specs/ synced with all Phase 1 + Phase 2 + engineering-docs capabilities (22 specs total)

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

openspec/specs/deployment/spec.md

@@ -0,0 +1,44 @@
+# Spec: Multi-Region Deployment (Terraform)
+
+**Status**: Pending CEO approval
+**Workstream**: 8 of 8
+
+## Scope
+- `terraform/` directory at project root
+- Shared `agentidp` module (compute, networking, secrets)
+- `environments/aws/` — ECS Fargate + RDS PostgreSQL + ElastiCache Redis
+- `environments/gcp/` — Cloud Run + Cloud SQL + Memorystore Redis
+- Deployment guide: `docs/devops/deployment.md`
+
+## Module structure
+
+```
+terraform/
+  modules/
+    agentidp/
+      main.tf       — compute (ECS task or Cloud Run service)
+      networking.tf — VPC, subnets, security groups
+      variables.tf  — all configurable inputs
+      outputs.tf    — service URL, DB endpoint, Redis endpoint
+    rds/            — managed PostgreSQL
+    redis/          — managed Redis
+    lb/             — ALB (AWS) or Cloud LB (GCP), TLS cert
+  environments/
+    aws/
+      main.tf       — calls modules, sets AWS-specific vars
+      variables.tf
+      terraform.tfvars.example
+    gcp/
+      main.tf
+      variables.tf
+      terraform.tfvars.example
+```
+
+## Acceptance Criteria
+- [ ] `terraform validate` passes for both aws and gcp environments
+- [ ] `terraform plan` produces no errors against a live AWS/GCP account (test in dev env)
+- [ ] JWT_PRIVATE_KEY and JWT_PUBLIC_KEY injected as environment secrets (not hardcoded)
+- [ ] TLS termination at load balancer — HTTPS only in production modules
+- [ ] PostgreSQL and Redis not publicly accessible — VPC-internal only
+- [ ] `docs/devops/deployment.md` — end-to-end deployment walkthrough for AWS and GCP
+- [ ] `terraform.tfvars.example` provided for both environments — no secrets in version control