Adding ability to update / patch by sku, adding uniqueness constraint violation checks

app/api/attachment_point_names.py

@@ -33,6 +33,10 @@ async def create_attachment_point_name(
     db: AsyncSession = Depends(get_db),
     actor: User = Depends(require_permission("attachment_point_names:write")),
 ):
+    if await apn_crud.get_by_name(db, payload.name):
+        raise HTTPException(
+            status_code=409, detail="Attachment point name already exists"
+        )
     apn = await apn_crud.create(db, name=payload.name)
     await audit_crud.log(
         db,
@@ -68,6 +72,12 @@ async def update_attachment_point_name(
     if apn is None:
         raise HTTPException(status_code=404, detail="Attachment point name not found")
     changes = payload.model_dump(exclude_unset=True)
+    if "name" in changes:
+        existing = await apn_crud.get_by_name(db, changes["name"])
+        if existing is not None and existing.id != apn.id:
+            raise HTTPException(
+                status_code=409, detail="Attachment point name already exists"
+            )
     apn = await apn_crud.update(db, apn, changes)
     await audit_crud.log(
         db,