feat: expose brands list per source via /pipeline/sources API

Each source module now exports a brands[] array:
- motousher: 44 brands (full list from brands.js)
- dirtstreet: 5 brands (SC Project, Evotech, etc.)
- retrorides: 10 bike brands (BMW, Ducati, Aprilia, etc.)
- kyt: KYT
- brocks-performance: Brock's Performance
- yuasa: Yuasa

listSources() passes brands[] through in the API response so the
frontend can render the per-source brand list without a separate call.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/business-logic/import-pipeline/sources/brocks-performance/index.js

@@ -206,6 +206,7 @@ async function fetchWebsiteData({ paths: runPaths }) {
 module.exports = {
   sourceKey,
   label,
+  brands: ["Brock's Performance"],
   defaultBrand: "Brock's Performance",
   defaultImageBaseUrl: "",
   envImageBaseUrl: "BROCKS_PERFORMANCE_IMAGE_BASE_URL",

src/business-logic/import-pipeline/sources/dirtstreet/index.js

@@ -155,6 +155,7 @@ function convertToShopifyProducts(input, options = {}) {
 module.exports = {
   sourceKey,
   label,
+  brands: BRANDS.map((b) => b.name),
   defaultBrand: "Dirtstreet",
   defaultImageBaseUrl: "",
   envImageBaseUrl: "DIRTSTREET_IMAGE_BASE_URL",

src/business-logic/import-pipeline/sources/index.js

@@ -32,6 +32,7 @@ function listSources() {
   return Object.values(sources).map((source) => ({
     sourceKey: source.sourceKey,
     label: source.label,
+    brands: Array.isArray(source.brands) ? source.brands : [],
   }));
 }
 

src/business-logic/import-pipeline/sources/kyt/index.js

@@ -39,6 +39,7 @@ function convertToShopifyProducts(input, options = {}) {
 module.exports = {
   sourceKey,
   label,
+  brands: ["KYT"],
   defaultBrand: "KYT",
   defaultImageBaseUrl: "https://kytindia.com/server/public/uploads",
   envImageBaseUrl: "KYT_IMAGE_BASE_URL",

src/business-logic/import-pipeline/sources/motousher/index.js

@@ -157,6 +157,7 @@ function convertToShopifyProducts(input, options = {}) {
 module.exports = {
   sourceKey,
   label,
+  brands: BRANDS.map((b) => b.name),
   defaultBrand: "Motousher",
   defaultImageBaseUrl: "",
   envImageBaseUrl: "MOTOUSHER_IMAGE_BASE_URL",

src/business-logic/import-pipeline/sources/retrorides/index.js

@@ -126,6 +126,7 @@ function convertToShopifyProducts(input, options = {}) {
 module.exports = {
   sourceKey,
   label,
+  brands: ["BMW", "Ducati", "Aprilia", "Honda", "Kawasaki", "Triumph", "Suzuki", "Yamaha", "KTM", "Husqvarna"],
   defaultBrand: "Retro Rides",
   defaultImageBaseUrl: "",
   envImageBaseUrl: "RETRORIDES_IMAGE_BASE_URL",

src/business-logic/import-pipeline/sources/yuasa/index.js

@@ -135,6 +135,7 @@ function convertToShopifyProducts(input, options = {}) {
 module.exports = {
   sourceKey,
   label,
+  brands: ["Yuasa"],
   defaultBrand: "Yuasa",
   defaultImageBaseUrl: "",
   envImageBaseUrl: "YUASA_IMAGE_BASE_URL",