feat: Speiseplan-Inhalte variabel mehrsprachig (Teil 2)

Gerichtnamen, Essenszeiten und Allergen-/Zusatzstoff-Bezeichnungen sind
jetzt genauso dynamisch mehrsprachig wie die Bedienoberfläche aus
v1.10.0, statt fest auf Englisch/Polnisch begrenzt zu sein. Neue
Übersetzungstabellen ersetzen die alten name_en/name_pl-Spalten,
DeepL-Auto-Übersetzung und CSV-Import/-Export unterstützen jetzt
beliebig viele aktive Sprachen.

app/api/allergens/export/route.ts

@@ -1,14 +1,19 @@
 import { listCodes } from "@/lib/db/code-lists";
+import { listActiveLanguageCodes } from "@/lib/db/languages";
 import { authErrorResponse, requireRole } from "@/lib/auth/session";
 import { toCsv } from "@/lib/csv";
 
 export async function GET() {
   try {
     await requireRole(["staff", "admin"]);
-    const items = await listCodes("allergens");
+    const [items, activeCodes] = await Promise.all([
+      listCodes("allergens"),
+      listActiveLanguageCodes(),
+    ]);
+    const langCodes = activeCodes.filter((c) => c !== "de");
     const rows = [
-      ["code", "name", "name_en", "name_pl"],
-      ...items.map((i) => [i.code, i.name, i.name_en ?? "", i.name_pl ?? ""]),
+      ["code", "name", ...langCodes.map((c) => `name_${c}`)],
+      ...items.map((i) => [i.code, i.name, ...langCodes.map((c) => i.translations[c] ?? "")]),
     ];
     return new Response(toCsv(rows), {
       headers: {

app/api/allergens/import/route.ts

@@ -1,5 +1,6 @@
 import { NextResponse } from "next/server";
 import { importCodes, type CodeImportRow } from "@/lib/db/code-lists";
+import { listActiveLanguageCodes } from "@/lib/db/languages";
 import { authErrorResponse, requireRole } from "@/lib/auth/session";
 import { isSameOrigin } from "@/lib/origin";
 import { parseCsvWithHeader } from "@/lib/csv";
@@ -22,8 +23,10 @@ export async function POST(request: Request) {
     if (codeIdx === -1 || nameIdx === -1) {
       return NextResponse.json({ error: "missing_columns" }, { status: 400 });
     }
-    const nameEnIdx = header.indexOf("name_en");
-    const namePlIdx = header.indexOf("name_pl");
+    const activeCodes = (await listActiveLanguageCodes()).filter((c) => c !== "de");
+    const langCols = activeCodes
+      .map((code) => ({ code, idx: header.indexOf(`name_${code}`) }))
+      .filter((c) => c.idx !== -1);
 
     const rows: CodeImportRow[] = [];
     const skipped: { row: number; reason: string }[] = [];
@@ -35,12 +38,12 @@ export async function POST(request: Request) {
         skipped.push({ row: rowNum, reason: "Kürzel oder Bezeichnung fehlt" });
         return;
       }
-      rows.push({
-        code,
-        name,
-        name_en: nameEnIdx >= 0 ? c[nameEnIdx]?.trim() || null : null,
-        name_pl: namePlIdx >= 0 ? c[namePlIdx]?.trim() || null : null,
-      });
+      const translations: Record<string, string> = {};
+      for (const { code: lang, idx } of langCols) {
+        const value = c[idx]?.trim();
+        if (value) translations[lang] = value;
+      }
+      rows.push({ code, name, translations });
     });
 
     const result = rows.length > 0 ? await importCodes("allergens", rows) : { created: 0, updated: 0 };