added pop up view ingredients + warnings for delete removed the star import should also fix the test issue

server/src/main/java/server/api/IngredientController.java

@@ -168,27 +168,27 @@ public class IngredientController {
      * @see Ingredient
      */
     @PostMapping("/ingredients")
-    public ResponseEntity<?> createIngredient(@RequestBody Ingredient ingredient) {
+    public ResponseEntity<Ingredient> createIngredient(@RequestBody Ingredient ingredient) {
         if (ingredient == null
                 || ingredient.name == null
                 || ingredient.name.trim().isEmpty()) {
-            return ResponseEntity.badRequest()
+            return ResponseEntity.badRequest().build();
-                    .body("Ingredient name cannot be empty.");
         }
 
         return ingredientService.create(ingredient)
-                .<ResponseEntity<?>>map
+                .map(saved -> {
-                (saved -> {
+                    messagingTemplate.convertAndSend(
-                    messagingTemplate.convertAndSend(Topics.INGREDIENTS,
+                            Topics.INGREDIENTS,
-                            new CreateIngredientMessage(saved));
+                            new CreateIngredientMessage(saved)
+                    );
                     return ResponseEntity.ok(saved);
                 })
-                .orElseGet(() ->
+                .orElseGet(() -> ResponseEntity.status
-                        ResponseEntity.status(HttpStatus.CONFLICT)
+                        (HttpStatus.CONFLICT).build()
-                                .body("ingredient name already exists"));
+                );
-
     }
 
+
     /**
      * Delete an ingredient by its ID.
      * Maps to <code>DELETE /api/ingredients/{id}</code>