refactor: reduce all_brief payload to first image's alt and mediapath

Only include the necessary image fields for Card.svelte instead of
the entire images array to reduce API response size.

src/routes/api/recipes/items/all_brief/+server.ts

@@ -14,6 +14,7 @@ export const GET: RequestHandler = async ({params}) => {
 	).lean();
 
 	// Map to brief format with English data
+	// Only include first image's alt and mediapath to reduce payload
 	const found_brief = recipes.map((recipe: any) => ({
 		_id: recipe._id,
 		name: recipe.translations.en.name,
@@ -25,7 +26,9 @@ export const GET: RequestHandler = async ({params}) => {
 		season: recipe.season || [],
 		dateModified: recipe.dateModified,
 		germanShortName: recipe.short_name, // For language switcher
-		images: recipe.images || []
+		images: recipe.images?.[0]
+			? [{ alt: recipe.images[0].alt, mediapath: recipe.images[0].mediapath }]
+			: []
 	})) as BriefRecipeType[];
 
 	return json(JSON.parse(JSON.stringify(rand_array(found_brief))));

src/routes/api/rezepte/items/all_brief/+server.ts

@@ -17,7 +17,15 @@ export const GET: RequestHandler = async ({params}) => {
   } else {
     // Cache miss - fetch from DB
     await dbConnect();
-    recipes = await Recipe.find({}, 'name short_name tags category icon description season dateModified images').lean() as BriefRecipeType[];
+    const dbRecipes = await Recipe.find({}, 'name short_name tags category icon description season dateModified images').lean() as BriefRecipeType[];
+
+    // Only include first image's alt and mediapath to reduce payload
+    recipes = dbRecipes.map(recipe => ({
+      ...recipe,
+      images: recipe.images?.[0]
+        ? [{ alt: recipe.images[0].alt, mediapath: recipe.images[0].mediapath }]
+        : []
+    })) as BriefRecipeType[];
 
     // Store in cache (1 hour TTL)
     await cache.set(cacheKey, JSON.stringify(recipes), 3600);