Add optional service pricing matrix and fix admin catalog save.

Users pick per-service CPU/memory/storage at deploy; admins manage unit rates and deploy defaults. PATCH sends only fields accepted by the pricing-catalog DTO.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/src/billing/billing.service.ts

@@ -312,6 +312,12 @@ export class BillingService {
       ('enableCustomDomain' in app
         ? !!(app as CalculateCostDto).enableCustomDomain
         : !!(app as Application).customDomain);
+    const optionalRes =
+      'optionalServiceResources' in app
+        ? (app as Application).optionalServiceResources
+        : undefined;
+    const dtoExtras =
+      'redisResources' in app ? (app as CalculateCostDto) : undefined;
     return {
       runtime: app.runtime,
       databaseType: app.databaseType,
@@ -324,6 +330,8 @@ export class BillingService {
       enableRabbitmq: !!app.enableRabbitmq,
       enableElasticsearch: !!app.enableElasticsearch,
       enableCustomDomain,
+      redisResources: optionalRes?.redis ?? dtoExtras?.redisResources,
+      rabbitmqResources: optionalRes?.rabbitmq ?? dtoExtras?.rabbitmqResources,
     };
   }
 
@@ -467,6 +475,8 @@ export class BillingService {
       enableRabbitmq: config.enableRabbitmq,
       enableElasticsearch: config.enableElasticsearch,
       enableCustomDomain: config.enableCustomDomain,
+      redisResources: config.redisResources,
+      rabbitmqResources: config.rabbitmqResources,
     };
   }