Merge pull request #179 from vshn/update-billing-adr

Update BillingService CR definition

Author: zugao

docs/modules/ROOT/pages/adr/0033-event-based-billing-oddo.adoc

@@ -201,21 +201,33 @@ status:
       value: "3"
       timestamp: "2025-06-20T13:00:00Z"
       state: "sent|pending|failed"
+      itemDescription: "Human readable description"
+      itemGroupDescription: "My Item Group"
+      unitID: "yunit"
     - type: "scaled"
       productId: "Y"
       value: "3"
       timestamp: "2025-05-20T13:00:00Z"
       state: "sent|pending|failed"
+      itemDescription: "Human readable description"
+      itemGroupDescription: "My Item Group"
+      unitID: "yunit"
     - type: "scaled"
       productId: "Y"
       value: "2"
       timestamp: "2025-04-20T13:00:00Z"
       state: "sent|pending|failed"
+      itemDescription: "Human readable description"
+      itemGroupDescription: "My Item Group"
+      unitID: "yunit"
     - type: "created"
       productId: "X"
       value: "1"
       timestamp: "2025-03-20T13:00:00Z"
       state: "sent|pending|failed"
+      itemDescription: "Human readable description"
+      itemGroupDescription: "My Item Group"
+      unitID: "xunit"
   conditions:
     - lastTransitionTime: "2024-05-25T15:35:02Z"
       reason: ReconcileSuccess
@@ -238,6 +250,11 @@ status:
 <9> `spec.value` for a generic naming, as not all product quantities can be described as a size.
 <10> Events track the state of each of the products associated.
 
+[NOTE]
+====
+Because product items in `spec` can be deleted, we store the full item details in `status.events` to retain history.
+====
+
 [NOTE]
 ====
 For a complete reference of all fields in this CR, see the https://docs.central.vshn.ch/event-billing-ingestion.html[Odoo documentation].