fix(router): adjust type check for extra parameter in navigation

fix(import): ensure correct typing for passing markdown and imageUrl
fix(recipes): delete local image file on recipe deletion to avoid orphan files

backend/src/recipes/recipes.service.ts

@@ -1,5 +1,7 @@
 import { Injectable, NotFoundException } from '@nestjs/common';
 import { Prisma } from '@prisma/client';
+import * as fs from 'node:fs/promises';
+import * as path from 'node:path';
 import { PrismaService } from '../prisma/prisma.service';
 import { CreateRecipeDto } from './dto/create-recipe.dto';
 import { ParseMarkdownDto } from './dto/parse-markdown.dto';
@@ -272,6 +274,15 @@ export class RecipesService {
 
     await this.prisma.recipeIngredient.deleteMany({ where: { recipeId: id } });
     await this.prisma.recipe.delete({ where: { id } });
+
+    // Radera lokal bildfil om den finns (undviker orphan-filer på disk).
+    if (existingRecipe.imageUrl?.startsWith('/images/')) {
+      const filename = path.basename(existingRecipe.imageUrl);
+      const filePath = path.join(IMAGE_DEST_DIR, filename);
+      await fs.unlink(filePath).catch(() => {
+        // Filen kanske redan är borttagen — ignorera felet.
+      });
+    }
   }
 
   async updateImage(id: number, sourceUrl: string) {