refactor: merge api/recipes and api/rezepte into unified recipeLang route

Consolidate duplicate recipe API routes into a single
api/[recipeLang=recipeLang]/ structure. Both /api/recipes/ and
/api/rezepte/ URLs continue to work via the param matcher. Shared
read endpoints now serve both languages with caching for both.

Also: remove dead code (5 unused components, cookie.js) and the
redundant cron-execute recurring payment route.

src/routes/[recipeLang=recipeLang]/+page.server.ts

@@ -2,8 +2,7 @@ import type { PageServerLoad } from "./$types";
 import { getUserFavorites, addFavoriteStatusToRecipes } from "$lib/server/favorites";
 
 export const load: PageServerLoad = async ({ fetch, locals, params }) => {
-    const isEnglish = params.recipeLang === 'recipes';
-    const apiBase = isEnglish ? '/api/recipes' : '/api/rezepte';
+    const apiBase = `/api/${params.recipeLang}`;
 
     let current_month = new Date().getMonth() + 1
     const res_season = await fetch(`${apiBase}/items/in_season/` + current_month);

src/routes/[recipeLang=recipeLang]/[name]/+page.server.ts

@@ -4,7 +4,7 @@ import { stripHtmlTags } from '$lib/js/stripHtmlTags';
 
 export const load: PageServerLoad = async ({ fetch, params, locals }) => {
     const isEnglish = params.recipeLang === 'recipes';
-    const apiBase = isEnglish ? '/api/recipes' : '/api/rezepte';
+    const apiBase = `/api/${params.recipeLang}`;
 
     const res = await fetch(`${apiBase}/items/${params.name}`);
 

src/routes/[recipeLang=recipeLang]/category/+page.ts

@@ -5,7 +5,7 @@ import { getAllCategories, isOfflineDataAvailable } from '$lib/offline/db';
 
 export const load: PageLoad = async ({ fetch, params }) => {
     const isEnglish = params.recipeLang === 'recipes';
-    const apiBase = isEnglish ? '/api/recipes' : '/api/rezepte';
+    const apiBase = `/api/${params.recipeLang}`;
 
     // Check if we should use offline data
     if (browser && isOffline() && canUseOfflineData()) {

src/routes/[recipeLang=recipeLang]/category/[category]/+page.server.ts

@@ -2,8 +2,7 @@ import type { PageServerLoad } from "./$types";
 import { getUserFavorites, addFavoriteStatusToRecipes } from "$lib/server/favorites";
 
 export const load: PageServerLoad = async ({ fetch, locals, params }) => {
-    const isEnglish = params.recipeLang === 'recipes';
-    const apiBase = isEnglish ? '/api/recipes' : '/api/rezepte';
+    const apiBase = `/api/${params.recipeLang}`;
 
     const res = await fetch(`${apiBase}/items/category/${params.category}`);
     const items = await res.json();

src/routes/[recipeLang=recipeLang]/favorites/+page.server.ts

@@ -2,8 +2,7 @@ import type { PageServerLoad } from "./$types";
 import { redirect } from '@sveltejs/kit';
 
 export const load: PageServerLoad = async ({ fetch, locals, params }) => {
-    const isEnglish = params.recipeLang === 'recipes';
-    const apiBase = isEnglish ? '/api/recipes' : '/api/rezepte';
+    const apiBase = `/api/${params.recipeLang}`;
     const session = await locals.auth();
 
     if (!session?.user?.nickname) {

src/routes/[recipeLang=recipeLang]/icon/[icon]/+page.server.ts

@@ -2,8 +2,7 @@ import type { PageServerLoad } from "./$types";
 import { getUserFavorites, addFavoriteStatusToRecipes } from "$lib/server/favorites";
 
 export const load: PageServerLoad = async ({ fetch, locals, params }) => {
-    const isEnglish = params.recipeLang === 'recipes';
-    const apiBase = isEnglish ? '/api/recipes' : '/api/rezepte';
+    const apiBase = `/api/${params.recipeLang}`;
 
     const res_season = await fetch(`${apiBase}/items/icon/` + params.icon);
     const res_icons = await fetch(`/api/rezepte/items/icon`); // Icons are shared across languages

src/routes/[recipeLang=recipeLang]/search/+page.server.ts

@@ -2,8 +2,7 @@ import type { PageServerLoad } from './$types';
 import { getUserFavorites, addFavoriteStatusToRecipes } from "$lib/server/favorites";
 
 export const load: PageServerLoad = async ({ url, fetch, params, locals }) => {
-    const isEnglish = params.recipeLang === 'recipes';
-    const apiBase = isEnglish ? '/api/recipes' : '/api/rezepte';
+    const apiBase = `/api/${params.recipeLang}`;
 
     const query = url.searchParams.get('q') || '';
     const category = url.searchParams.get('category');

src/routes/[recipeLang=recipeLang]/season/+page.server.ts

@@ -2,8 +2,7 @@ import type { PageServerLoad } from "./$types";
 import { getUserFavorites, addFavoriteStatusToRecipes } from "$lib/server/favorites";
 
 export const load: PageServerLoad = async ({ fetch, locals, params }) => {
-    const isEnglish = params.recipeLang === 'recipes';
-    const apiBase = isEnglish ? '/api/recipes' : '/api/rezepte';
+    const apiBase = `/api/${params.recipeLang}`;
 
     let current_month = new Date().getMonth() + 1
     const res_season = await fetch(`${apiBase}/items/in_season/` + current_month);

src/routes/[recipeLang=recipeLang]/season/[month]/+page.server.ts

@@ -2,8 +2,7 @@ import type { PageServerLoad } from "./$types";
 import { getUserFavorites, addFavoriteStatusToRecipes } from "$lib/server/favorites";
 
 export const load: PageServerLoad = async ({ fetch, locals, params }) => {
-    const isEnglish = params.recipeLang === 'recipes';
-    const apiBase = isEnglish ? '/api/recipes' : '/api/rezepte';
+    const apiBase = `/api/${params.recipeLang}`;
 
     const res_season = await fetch(`${apiBase}/items/in_season/` + params.month);
     const item_season = await res_season.json();

src/routes/[recipeLang=recipeLang]/tag/+page.ts

@@ -5,7 +5,7 @@ import { getAllTags, isOfflineDataAvailable } from '$lib/offline/db';
 
 export const load: PageLoad = async ({ fetch, params }) => {
     const isEnglish = params.recipeLang === 'recipes';
-    const apiBase = isEnglish ? '/api/recipes' : '/api/rezepte';
+    const apiBase = `/api/${params.recipeLang}`;
 
     // Check if we should use offline data
     if (browser && isOffline() && canUseOfflineData()) {

src/routes/[recipeLang=recipeLang]/tag/[tag]/+page.server.ts

@@ -2,8 +2,7 @@ import type { PageServerLoad} from "./$types";
 import { getUserFavorites, addFavoriteStatusToRecipes } from "$lib/server/favorites";
 
 export const load: PageServerLoad = async ({ fetch, locals, params }) => {
-    const isEnglish = params.recipeLang === 'recipes';
-    const apiBase = isEnglish ? '/api/recipes' : '/api/rezepte';
+    const apiBase = `/api/${params.recipeLang}`;
 
     const res_tag = await fetch(`${apiBase}/items/tag/${params.tag}`);
     const items_tag = await res_tag.json();