Remove recipe name field; use product title internally

The recipe name input is dropped from the product form — the version
number alone identifies a recipe. The product title is stored as the
internal name to satisfy the NOT NULL constraint. The history table
no longer shows the name column.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/Filament/User/Resources/ProductResource/Pages/EditProduct.php

@@ -52,10 +52,9 @@ class EditProduct extends EditRecord
     protected function syncRecipe(): void
     {
         $product = $this->record;
-        $name    = $this->data['recipe_name'] ?? null;
         $spices  = $this->data['recipe_spices'] ?? [];
 
-        if (! $name) {
+        if (empty($spices)) {
             return;
         }
 
@@ -72,10 +71,7 @@ class EditProduct extends EditRecord
                 $s->id => (float) $s->pivot->amount_in_percent,
             ])->toArray();
 
-            $nameChanged   = $current->name !== $name;
-            $spicesChanged = $existingPivot != $newPivot;
-
-            if (! $nameChanged && ! $spicesChanged) {
+            if ($existingPivot == $newPivot) {
                 return;
             }
         }
@@ -83,7 +79,7 @@ class EditProduct extends EditRecord
         $nextVersion = Recipe::where('product_id', $product->id)->max('version') + 1;
 
         $recipe = Recipe::create([
-            'name'       => $name,
+            'name'       => $product->title,
             'product_id' => $product->id,
             'version'    => $nextVersion,
         ]);