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Jon Chery 3508671377 refactor(modules): remove thin-composition layer; rewrite all module READMEs

The L2 thin-composition layer (composition.json + contract_resolver.py +
contract schema + sample contracts) has been removed completely. The
implementation was unsatisfactory and is deferred for a later redesign.

- Delete: composition.json x2, contract_resolver.py, contracts/ x2,
  contract.schema.json
- Patch: run_platform.sh now loads a pre-existing IR instance instead of
  resolving a contract (the downstream adapter/checkov/confidence/outbox
  pipeline is unchanged)
- Prune: L2 entries removed from registry.json (L1 entries unchanged)
- Rewrite: all 7 L1 module READMEs in plain language (no jargon), each
  with Resources/Inputs/Outputs/Usage/Compliance-extension-points/Versioning
  sections derived from interface.json
- Add: 2 L2 placeholder READMEs noting the composition is under redesign
- Add: modules-ir/README.md catalog index + README-TEMPLATE.md

---ci---
project: acdl
phase: 17
milestone: v1.3
status: execute
---/ci---

2026-07-22 13:54:40 +00:00

interface.json

docs(P13): plan-as-execute + verify (v1.2.3)

2026-07-21 21:05:48 +00:00

README.md

refactor(modules): remove thin-composition layer; rewrite all module READMEs

2026-07-22 13:54:40 +00:00

README.md

l1-ecs-cluster — ECS Fargate cluster

Module kind: L1 primitive | Version: 1.0.0

An ECS Fargate cluster. The simplest ECS module — one resource, two inputs, two outputs. The cluster is the container orchestration boundary that l1-ecs-service references for task placement.

Resources

Resource	Type	Purpose
cluster	`aws_ecs_cluster`	The ECS Fargate cluster

Inputs

Name	Type	Required	Default	Description
`name`	string	yes	—	The ECS cluster name
`region`	string	yes	—	AWS region the cluster is created in

Outputs

Name	Type	Description
`cluster_arn`	arn	The ECS cluster ARN
`cluster_id`	string	The ECS cluster id (name)

Usage

{
  "id": "cluster",
  "type": "aws:ecs:cluster",
  "module": "l1-ecs-cluster@1.0.0",
  "inputs": {
    "name": "acdl-microservice",
    "region": "us-east-1"
  }
}

The cluster_arn output is referenced by l1-ecs-service as its cluster_arn input.

Compliance extension points

Container Insights — add configuration { container_insights = "enabled" } for observability (SOC2 CC7.3, DORA ICT risk monitoring).
CloudWatch Logs — add a log group with retention policy for cluster-level audit logs (SOX, SOC2 CC7.2, HIPAA §164.312(b)).
Encryption — add settings { name = "containerInsights", value = "enabled" } and KMS-based encryption for container data (HIPAA §164.312(a)(2)(iv), GDPR Art.32).

Versioning

1.0.0 — interface MAJOR, behavior MINOR, lifecycle PATCH. MAJOR bumps require a new registry entry (immutable publication); old entries enter a 12-month deprecation window.