7.40Better architecture: async recovery

Instead of:

HTTP request
 ↓
Salesforce
 ↓
Billing
 ↓
ERP
 ↓
wait for everything

perhaps:

HTTP request
 ↓
validate
 ↓
persist command/event
 ↓
202 Accepted

Then:

worker
 ↓
Salesforce
 ↓
Billing
 ↓
ERP

Failures can be retried independently.

That enters Module 10 territory—sync vs async architecture.