feat(P02 W0): dynamodb L1 primitive — interface, terraform, registry, tests (REQ-322)

New L1 module modules/l1/dynamodb/ (stack type aws:dynamodb:table).
Terraform aws_dynamodb_table with PK + optional SK, PAY_PER_REQUEST
default, SSE-KMS + PITR + prevent_destroy per v1.8 NFR defaults.
Registry entry (kind l1), catalog row, test_adapter.py updated to
15 entries / 13 L1. 45 tests passing.

---ci---
project: acdl
phase: 2
milestone: v1.26
status: execute
phase_role: execution
wave: 0
requirements: [REQ-322]
---/ci---

modules/l1/dynamodb/README.md

@@ -0,0 +1,38 @@
+# DynamoDB L1 Primitive
+
+> Stack type: `aws:dynamodb:table` → Terraform `aws_dynamodb_table`
+
+## Description
+
+A DynamoDB table primitive with encryption + point-in-time recovery
+enabled by default (per v1.8 NFR defaults). Supports a partition key
+(required) + optional sort key. Default billing mode is
+`PAY_PER_REQUEST` (on-demand).
+
+## Inputs
+
+| Name | Type | Required | Default | Description |
+|---|---|---|---|---|
+| `table_name` | string | yes | — | Globally-unique table name |
+| `region` | string | yes | — | AWS region |
+| `pk` | string | yes | — | Partition key attribute name |
+| `sk` | string | no | `""` | Sort key attribute name |
+| `billing_mode` | string | no | `PAY_PER_REQUEST` | Billing mode |
+| `enabled` | boolean | no | `true` | Feature flag |
+
+## Outputs
+
+| Name | Type | Description |
+|---|---|---|
+| `table_arn` | arn | The table ARN |
+| `table_name` | string | The table name |
+
+## NFRs
+
+- **Encryption:** SSE-KMS enabled by default.
+- **Point-in-time recovery:** Enabled by default.
+- **Deletion protection:** `prevent_destroy = true` (Terraform lifecycle).
+
+## Examples
+
+See `examples/simple.yaml`.

modules/l1/dynamodb/examples/simple.yaml

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+table_name: nova-simple-ledger
+region: us-east-1
+pk: block_index
+billing_mode: PAY_PER_REQUEST

modules/l1/dynamodb/instance.json

@@ -0,0 +1,10 @@
+{
+  "module": "dynamodb",
+  "version": "1.0.0",
+  "inputs": {
+    "table_name": "nova-blockchain-ledger",
+    "region": "us-east-1",
+    "pk": "block_index",
+    "billing_mode": "PAY_PER_REQUEST"
+  }
+}

modules/l1/dynamodb/interface.json

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+{
+  "name": "dynamodb",
+  "version": "1.0.0",
+  "kind": "l1",
+  "type": "aws:dynamodb:table",
+  "description": "DynamoDB table primitive (engine-agnostic stack type aws:dynamodb:table; the Terraform adapter translates to aws_dynamodb_table). Encryption + PITR enabled per v1.8 NFR defaults.",
+  "inputs": {
+    "table_name": {
+      "type": "string",
+      "description": "Globally-unique DynamoDB table name.",
+      "required": true
+    },
+    "region": {
+      "type": "string",
+      "description": "AWS region the table is created in.",
+      "required": true
+    },
+    "pk": {
+      "type": "string",
+      "description": "Partition key attribute name.",
+      "required": true
+    },
+    "sk": {
+      "type": "string",
+      "description": "Sort key attribute name (optional).",
+      "required": false
+    },
+    "billing_mode": {
+      "type": "string",
+      "default": "PAY_PER_REQUEST",
+      "description": "Billing mode: PAY_PER_REQUEST or PROVISIONED."
+    },
+    "enabled": {
+      "type": "boolean",
+      "default": true,
+      "description": "Feature flag: enable/disable this module."
+    }
+  },
+  "outputs": {
+    "table_arn": {
+      "type": "arn",
+      "description": "The DynamoDB table ARN."
+    },
+    "table_name": {
+      "type": "string",
+      "description": "The table name (echoes the input)."
+    }
+  },
+  "nfrs": {
+    "encryption_enabled": {
+      "type": "boolean",
+      "description": "Enable server-side encryption (KMS).",
+      "default": true
+    },
+    "point_in_time_recovery": {
+      "type": "boolean",
+      "description": "Enable point-in-time recovery.",
+      "default": true
+    },
+    "deletion_protection": {
+      "type": "boolean",
+      "description": "Prevent resource destruction via Terraform lifecycle prevent_destroy.",
+      "default": true
+    }
+  }
+}

modules/l1/dynamodb/terraform/main.tf

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+resource "aws_dynamodb_table" "this" {
+  count        = var.enabled ? 1 : 0
+  name         = var.table_name
+  billing_mode = var.billing_mode
+
+  hash_key  = var.pk
+  range_key = var.sk != "" ? var.sk : null
+
+  attribute {
+    name = var.pk
+    type = "S"
+  }
+
+  dynamic "attribute" {
+    for_each = var.sk != "" ? [var.sk] : []
+    content {
+      name = attribute.value
+      type = "S"
+    }
+  }
+
+  point_in_time_recovery {
+    enabled = true
+  }
+
+  server_side_encryption {
+    enabled = true
+  }
+
+  tags = {
+    "nova:managed-by" = "platform"
+    "nova:module"     = "dynamodb"
+  }
+
+  lifecycle {
+    prevent_destroy = true
+  }
+}
+
+variable "table_name" {
+  type = string
+}
+
+variable "region" {
+  type    = string
+  default = "us-east-1"
+}
+
+variable "pk" {
+  type = string
+}
+
+variable "sk" {
+  type    = string
+  default = ""
+}
+
+variable "billing_mode" {
+  type    = string
+  default = "PAY_PER_REQUEST"
+}
+
+variable "enabled" {
+  type    = bool
+  default = true
+}
+
+output "table_arn" {
+  value = var.enabled ? aws_dynamodb_table.this[0].arn : ""
+}
+
+output "table_name" {
+  value = var.enabled ? aws_dynamodb_table.this[0].name : ""
+}