i18n(hemskärm): översätt rekommendationstitlar + ingrediensnamn + hårdkodade strängar

- what-to-eat översätter nu recepttitlar (resolveRecipeTitles, batch) + ⏳/saknas-
  ingrediensnamn (via allIngredients-id-karta + resolveIngredientNames)
- index.tsx använder rec.title/item.name; hårdkodat -> t(): sökfält, Rekommenderat,
  Toppval, Menade du, Baka (kategori), tomma-lägen
- 7 nya nycklar (wte.searchPlaceholder/recommended/topPick/didYouMean/emptySearch/
  emptyHoliday, cat.baking) i alla 12 språk
- KVAR (separat): whySv-prosan (kräver strukturerade skäl), säsongsval (region), meal-box-titlar

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

apps/api/src/lib/contentLanguage.ts

@@ -72,6 +72,40 @@ export async function resolveRecipeTranslation(
   };
 }
 
+/**
+ * Publicerade recepttitlar för flera recept på en gång: Map recipeId -> titel.
+ * För listor/rekommendationer där vi bara behöver titeln (inte hela receptet).
+ * Saknade id:n utelämnas (anroparen faller tillbaka på svensk titel).
+ */
+export async function resolveRecipeTitles(
+  db: Database,
+  recipeIds: string[],
+  languageTag: string,
+): Promise<Map<string, string>> {
+  const candidates = languageCandidates(languageTag);
+  if (candidates.includes("sv") || recipeIds.length === 0) return new Map();
+  const rows = await db
+    .select({
+      recipeId: schema.recipeTranslations.recipeId,
+      languageTag: schema.recipeTranslations.languageTag,
+      title: schema.recipeTranslations.title,
+    })
+    .from(schema.recipeTranslations)
+    .where(
+      and(
+        inArray(schema.recipeTranslations.recipeId, recipeIds),
+        inArray(schema.recipeTranslations.languageTag, candidates),
+        eq(schema.recipeTranslations.status, "published"),
+      ),
+    );
+  const out = new Map<string, string>();
+  // Exakt språk (candidates[0]) vinner över primärt (candidates[1]).
+  for (const candidate of [...candidates].reverse()) {
+    for (const r of rows) if (r.languageTag === candidate) out.set(r.recipeId, r.title);
+  }
+  return out;
+}
+
 /**
  * Ingrediensnamn för användarens språk: Map ingredientId -> namn.
  * Saknade id:n behåller svenskt namn (fallback sker hos anroparen).

apps/api/src/routes/recommendations.ts

@@ -26,6 +26,7 @@ import { DEFAULT_TARGETS, computeDailyTargets, summarizeDay } from "@app/nutriti
 import { parse } from "../lib/errors.js";
 import { getActiveHouseholdId, todayIso } from "../lib/helpers.js";
 import { loadLocalePreferences } from "../lib/localeContext.js";
+import { resolveIngredientNames, resolveRecipeTitles } from "../lib/contentLanguage.js";
 
 /**
  * "Vad ska vi äta?" (spec §18) – appens viktigaste endpoint.
@@ -604,6 +605,27 @@ export async function recommendationRoutes(app: FastifyInstance) {
         ? await computeSearchSuggestion(app, q.search)
         : null;
 
+    // --- i18n: översätt titlar + ingrediensnamn till användarens språk (svensk källa = fallback) ---
+    const languageTag = localePrefs.languageTag;
+    const titleByRecipe = await resolveRecipeTitles(
+      app.db,
+      recommendations.map((r) => r.recipeId),
+      languageTag,
+    );
+    const localizedById = await resolveIngredientNames(
+      app.db,
+      allIngredients
+        .map((i) => i.canonicalIngredientId)
+        .filter((id): id is string => id != null),
+      languageTag,
+    );
+    const svToLocalized = new Map<string, string>();
+    for (const i of allIngredients) {
+      const loc = i.canonicalIngredientId ? localizedById.get(i.canonicalIngredientId) : undefined;
+      if (loc) svToLocalized.set(i.displayNameSv, loc);
+    }
+    const localizeName = (n: string): string => svToLocalized.get(n) ?? n;
+
     return {
       mealType: q.mealType,
       context: {
@@ -622,6 +644,9 @@ export async function recommendationRoutes(app: FastifyInstance) {
       mealBoxSuggestions,
       recommendations: recommendations.map((r) => ({
         ...r,
+        title: titleByRecipe.get(r.recipeId) ?? r.titleSv,
+        usesExpiring: r.usesExpiring.map((u) => ({ ...u, name: localizeName(u.nameSv) })),
+        missingIngredients: r.missingIngredients.map(localizeName),
         ratingAverage: ratingByRecipe.get(r.recipeId)?.average ?? null,
         ratingCount: ratingByRecipe.get(r.recipeId)?.count ?? 0,
       })),