Remove some stripe proxy methods

backend/src/routes/invoices.rs

@@ -14,8 +14,8 @@ pub async fn list_tenant_invoices(
     let tenant = api.get_tenant_or_404(&pubkey).await?;
 
     let invoices = api
-        .billing
-        .stripe_list_invoices(&tenant.stripe_customer_id)
+        .stripe
+        .list_invoices(&tenant.stripe_customer_id)
         .await
         .map_err(internal)?;
     ok(invoices)

backend/src/routes/stripe.rs

@@ -25,8 +25,8 @@ pub async fn create_stripe_session(
     let tenant = api.get_tenant_or_404(&pubkey).await?;
 
     let url = api
-        .billing
-        .stripe_create_portal_session(&tenant.stripe_customer_id, params.return_url.as_deref())
+        .stripe
+        .create_portal_session(&tenant.stripe_customer_id, params.return_url.as_deref())
         .await
         .map_err(internal)?;
     ok(serde_json::json!({ "url": url }))

backend/src/routes/tenants.rs

@@ -65,9 +65,15 @@ pub async fn create_tenant(
         return ok(TenantResponse::from(t));
     }
 
+    let display_name = api
+        .robot
+        .fetch_nostr_name(&pubkey)
+        .await
+        .unwrap_or(pubkey.chars().take(8).collect());
+
     let stripe_customer_id = api
-        .billing
-        .stripe_create_customer(&pubkey)
+        .stripe
+        .create_customer(&pubkey, &display_name)
         .await
         .map_err(internal)?;