Restaurant mode Phase 2: menu depth — categories, stations, modifiers, courses

Builds on Phase 1 with the menu structure restaurants need:
- Menu setup page (restaurant mode): categories, kitchen stations, and modifier
  groups with options (price deltas).
- Products gain category, kitchen station, default course, and attached modifier
  groups (managed on the product form).
- Ordering: the ticket groups the catalog by category and, when a product has
  modifier groups, opens a picker (respects min/max select) for options + notes +
  course before adding. Effective price = base + modifier deltas (resolved
  server-side; client prices are never trusted).
- Fire-by-course: send the whole tab or just one course to the kitchen.
- KDS: filter by station; each item shows its station, course, modifiers and notes.

Schema additive (pos_categories, pos_stations, pos_modifier_groups, pos_modifiers,
product↔group pivot, pos_sale_line_modifiers; category/station/course columns on
products and lines). PosRestaurantTest covers modifiers, course and station routing;
suite green (11 passed).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/Http/Controllers/Pos/ProductController.php

@@ -4,7 +4,12 @@ namespace App\Http\Controllers\Pos;
 
 use App\Http\Controllers\Controller;
 use App\Http\Controllers\Pos\Concerns\ScopesToAccount;
+use App\Models\PosCategory;
+use App\Models\PosLocation;
+use App\Models\PosModifierGroup;
 use App\Models\PosProduct;
+use App\Models\PosSaleLine;
+use App\Models\PosStation;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
 use Illuminate\View\View;
@@ -16,6 +21,7 @@ class ProductController extends Controller
     public function index(Request $request): View
     {
         $products = PosProduct::owned($this->ownerRef($request))
+            ->with('category')
             ->orderBy('name')
             ->paginate(30)
             ->withQueryString();
@@ -23,20 +29,25 @@ class ProductController extends Controller
         return view('pos.products.index', compact('products'));
     }
 
-    public function create(): View
+    public function create(Request $request): View
     {
-        return view('pos.products.create', ['product' => new PosProduct([
-            'currency' => config('pos.default_currency', 'GHS'),
-            'is_active' => true,
-        ])]);
+        return view('pos.products.create', [
+            'product' => new PosProduct([
+                'currency' => config('pos.default_currency', 'GHS'),
+                'is_active' => true,
+            ]),
+            'selectedGroups' => [],
+            ...$this->formOptions($request),
+        ]);
     }
 
     public function store(Request $request): RedirectResponse
     {
-        PosProduct::create([
+        $product = PosProduct::create([
             ...$this->validated($request),
             'owner_ref' => $this->ownerRef($request),
         ]);
+        $product->modifierGroups()->sync($this->groupIds($request));
 
         return redirect()->route('pos.products.index')->with('success', 'Product added.');
     }
@@ -45,13 +56,18 @@ class ProductController extends Controller
     {
         $this->authorizeOwner($request, $product);
 
-        return view('pos.products.edit', compact('product'));
+        return view('pos.products.edit', [
+            'product' => $product,
+            'selectedGroups' => $product->modifierGroups()->pluck('pos_modifier_groups.id')->all(),
+            ...$this->formOptions($request),
+        ]);
     }
 
     public function update(Request $request, PosProduct $product): RedirectResponse
     {
         $this->authorizeOwner($request, $product);
         $product->update($this->validated($request));
+        $product->modifierGroups()->sync($this->groupIds($request));
 
         return redirect()->route('pos.products.index')->with('success', 'Product updated.');
     }
@@ -64,23 +80,58 @@ class ProductController extends Controller
         return redirect()->route('pos.products.index')->with('success', 'Product removed.');
     }
 
+    /** @return array<string, mixed> */
+    private function formOptions(Request $request): array
+    {
+        $owner = $this->ownerRef($request);
+
+        return [
+            'restaurant' => PosLocation::owned($owner)->where('service_style', PosLocation::STYLE_RESTAURANT)->exists(),
+            'categories' => PosCategory::owned($owner)->orderBy('name')->get(),
+            'stations' => PosStation::owned($owner)->orderBy('name')->get(),
+            'modifierGroups' => PosModifierGroup::owned($owner)->orderBy('name')->get(),
+        ];
+    }
+
+    /** @return list<int> */
+    private function groupIds(Request $request): array
+    {
+        $owner = $this->ownerRef($request);
+        $ids = array_map('intval', (array) $request->input('modifier_group_ids', []));
+
+        return PosModifierGroup::owned($owner)->whereIn('id', $ids)->pluck('id')->all();
+    }
+
     /** @return array<string, mixed> */
     private function validated(Request $request): array
     {
+        $owner = $this->ownerRef($request);
+
         $data = $request->validate([
             'name' => ['required', 'string', 'max:200'],
             'sku' => ['nullable', 'string', 'max:80'],
             'price' => ['required', 'numeric', 'min:0.01'],
             'currency' => ['nullable', 'string', 'size:3'],
             'is_active' => ['sometimes', 'boolean'],
+            'category_id' => ['nullable', 'integer'],
+            'station_id' => ['nullable', 'integer'],
+            'course' => ['nullable', 'in:'.implode(',', array_keys(PosSaleLine::COURSES))],
         ]);
 
+        $categoryId = ($data['category_id'] ?? null) && PosCategory::owned($owner)->whereKey($data['category_id'])->exists()
+            ? (int) $data['category_id'] : null;
+        $stationId = ($data['station_id'] ?? null) && PosStation::owned($owner)->whereKey($data['station_id'])->exists()
+            ? (int) $data['station_id'] : null;
+
         return [
             'name' => $data['name'],
             'sku' => $data['sku'] ?? null,
             'price_minor' => (int) round(((float) $data['price']) * 100),
             'currency' => strtoupper($data['currency'] ?? config('pos.default_currency', 'GHS')),
             'is_active' => $request->boolean('is_active', true),
+            'category_id' => $categoryId,
+            'station_id' => $stationId,
+            'course' => $data['course'] ?? null,
         ];
     }
 }