fix: add null checks in meal-plans test cleanup

- Add conditional checks for testUserId, testRecipeId, and otherUserId
- Prevents Prisma validation errors when cleanup runs after failed setup
- Ensures test cleanup only attempts to delete records that were created

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

packages/api/src/routes/meal-plans.routes.real.test.ts

@@ -45,15 +45,21 @@ describe('Meal Plans Routes - Real Integration Tests', () => {
 
   afterAll(async () => {
     // Cleanup in order: meal plans (cascade deletes meals), recipes, user
-    await prisma.mealPlan.deleteMany({ where: { userId: testUserId } });
+    if (testUserId) {
+      await prisma.mealPlan.deleteMany({ where: { userId: testUserId } });
+    }
 
-    // Delete recipe and its relations
-    await prisma.ingredient.deleteMany({ where: { recipeId: testRecipeId } });
-    await prisma.instruction.deleteMany({ where: { recipeId: testRecipeId } });
-    await prisma.recipe.delete({ where: { id: testRecipeId } });
+    // Delete recipe and its relations (only if recipe was created)
+    if (testRecipeId) {
+      await prisma.ingredient.deleteMany({ where: { recipeId: testRecipeId } });
+      await prisma.instruction.deleteMany({ where: { recipeId: testRecipeId } });
+      await prisma.recipe.delete({ where: { id: testRecipeId } });
+    }
 
-    // Delete user
-    await prisma.user.delete({ where: { id: testUserId } });
+    // Delete user (only if user was created)
+    if (testUserId) {
+      await prisma.user.delete({ where: { id: testUserId } });
+    }
   });
 
   beforeEach(async () => {
@@ -493,9 +499,11 @@ describe('Meal Plans Routes - Real Integration Tests', () => {
     });
 
     afterAll(async () => {
-      // Cleanup other user
-      await prisma.mealPlan.deleteMany({ where: { userId: otherUserId } });
-      await prisma.user.delete({ where: { id: otherUserId } });
+      // Cleanup other user (only if created)
+      if (otherUserId) {
+        await prisma.mealPlan.deleteMany({ where: { userId: otherUserId } });
+        await prisma.user.delete({ where: { id: otherUserId } });
+      }
     });
 
     beforeEach(async () => {