Merge getBySku into single SQL query with FOR JSON sub-queries

Replaces 6 round-trips (1 sequential resolve + 5 parallel detail)
with one query. Auth resolution, article detail, categories, photos,
eans, and prices are all fetched in a single round-trip.

src/store/article/getBySku.js

@@ -1,22 +1,70 @@
-import resolveArticleBySku from './resolveArticleBySku.js';
-import queryBySku from './queryBySku.js';
+import { GET_ARTICLE_BY_SKU_FULL } from '../../sql/article.js';
+
+function parseJsonArray(raw) {
+  if (!raw) return [];
+  const arr = typeof raw === 'string' ? JSON.parse(raw) : raw;
+  return Array.isArray(arr) ? arr : [];
+}
 
 export default function getBySku(pool) {
-  const resolve = resolveArticleBySku(pool);
-  const load = queryBySku(pool);
-
   return async (googleAuthId, sku) => {
-    let t0 = performance.now();
-    const { articleId, languageId } = await resolve(googleAuthId, sku);
-    console.log(`[getBySku] resolveArticleBySku ${(performance.now() - t0).toFixed(1)}ms`);
+    const t0 = performance.now();
+    const result = await pool
+      .request()
+      .input('sku', sku)
+      .input('googleAuthId', googleAuthId)
+      .query(GET_ARTICLE_BY_SKU_FULL);
+    console.log(`[getBySku] single query ${(performance.now() - t0).toFixed(1)}ms`);
 
-    t0 = performance.now();
-    const article = await load(articleId, languageId);
-    console.log(`[getBySku] queryBySku (parallel) ${(performance.now() - t0).toFixed(1)}ms`);
-    if (!article) {
+    const row = result.recordset[0];
+    if (!row) {
       throw new Error('Article not found');
     }
+    if (!row.articleId || !row.categoryId) {
+      throw new Error('Article not found');
+    }
+    if (!row.companyId || !row.rootCategoryId || !row.languageId) {
+      throw new Error('Parent not found');
+    }
+    if (!row.companyuserId) {
+      throw new Error('Not authorized');
+    }
 
-    return article;
+    const a = typeof row.articleJson === 'string' ? JSON.parse(row.articleJson) : row.articleJson;
+
+    return {
+      article: {
+        id: a.id,
+        sku: a.sku,
+        name: a.name,
+        slug: a.slug,
+        unitamount: a.unitamount,
+        weight: a.weight,
+        unit: {
+          si: a.unitSi,
+          basesi: a.unitBasesi,
+          basesifactor: a.unitBasesifactor,
+          symbol: a.unitSymbol ?? null,
+          name: a.unitName ?? null,
+        },
+        brand: a.brandName
+          ? {
+              name: a.brandName,
+              thumbW: a.brandThumbW,
+              thumbH: a.brandThumbH,
+              thumbHash: a.brandThumbHash,
+            }
+          : null,
+        categoryIds: parseJsonArray(a.categoryIdsJson).map((r) => r.category_id),
+        photos: parseJsonArray(a.photosJson),
+        eans: parseJsonArray(a.eansJson).map((r) => r.ean),
+        prices: parseJsonArray(a.pricesJson),
+        optionsCount: a.optionsCount,
+        articleListCount: a.articleListCount,
+        childCount: a.childCount,
+        fatherArticleId: a.fatherArticleId,
+        fatherSku: a.fatherSku,
+      },
+    };
   };
 }