feat(P4): Nova rebrand — AWS resource migration (REQ-163)

Rename all acdl-* AWS resources → nova-* across terraform (DynamoDB,
Secrets Manager, Lambda, SNS, SG, KMS alias, ECS, ECR, IAM user/policy,
state bucket, ALB, VPC/subnet names). Lambda default table names → nova-*
(D-111). State bucket backend → nova-tfstate (-migrate-state documented).
New docs/NOVA_AWS_MIGRATION.md runbook (staged migration + rollback).
New scripts/migrate_dynamodb_data.py (scan+copy, dry-run default).
acdl-deploy- → nova-deploy- role ARN in deploy workflows. Test fixtures
updated; terraform validate + pytest + run_ci.sh PASS.

---ci---
project: acdl
phase: 4
milestone: v1.15
status: execute
---/ci---

modules/l2/microservice/composition.json

@@ -18,7 +18,7 @@
   "wires": [
     {"from": "contract.inputs.name", "to": "alb.inputs.name", "default": "app"},
     {"from": "contract.inputs.name", "to": "ecr.inputs.name", "default": "app-repo"},
-    {"from": "contract.inputs.name", "to": "roles.inputs.role_name", "default": "acdl-app-role"},
+    {"from": "contract.inputs.name", "to": "roles.inputs.role_name", "default": "nova-app-role"},
     {"from": "contract.inputs.region", "to": "cluster.inputs.region"},
     {"from": "contract.inputs.region", "to": "ecr.inputs.region"},
     {"from": "contract.inputs.region", "to": "roles.inputs.region"},