---ci---
project: acdl
phase: 10
milestone: v1.1
status: plan-as-execute
persona: backend-engineer
task: [T-10.4, T-10.5, T-10.7]
requirements.covered: [REQ-27]
---/ci---
Wave 2: contract + resolver + outbox writer.
- T-10.4: contracts/spike.yaml - the spike contract (stack:
l2-static-asset, environment: dev, inputs bucket_name + region). D-P10-2:
YAML consumer surface; the resolver parses YAML -> validates against the
JSON contract schema.
- T-10.5: acdl_platform/contract_resolver.py - resolve(contract_path) ->
IR instance. 7 steps: load YAML, validate contract schema, look up L2 in
registry, load composition.json, map inputs through wires, emit IR
instance, validate IR against ir.schema.json. Verified end-to-end:
spike.yaml -> IR instance with kind=l2, one l1-s3 resource, validates
against ir.schema.json.
- T-10.7: acdl_platform/outbox_writer.py - write_event(event) ->
DynamoDB put_item. SHA-256 over canonical JSON, prev_event_hash=GENESIS
for the first event (D-P10-3), PK contractId, SK eventType#eventTs, TTL
expire_at = now + 365d (D-044). stdlib + boto3.
Also regenerated terraform/spike/{main.tf,terraform.tf} by running the
adapter against the resolved L2 IR (the backend key is now
spike/l2-static-asset/terraform.tfstate, derived from the stack name per
D-P10-1).
Jon Chery