新增进销存报表菜单入口 (#212)

在商品价格管理下新增进销存报表入口和只读空状态页面；NavigationTest 5 passed，53 assertions。

config/business_navigation.php

@@ -302,6 +302,17 @@ $navigation = [
         'pages' => [
             ['slug' => 'normal-products', 'title' => '普通商品资料'],
             ['slug' => 'online-daifa-price', 'title' => '线上代发价格'],
+            [
+                'slug' => 'inventory-report',
+                'title' => '进销存报表',
+                'directory' => [
+                    'icon' => 'inventory',
+                    'status' => '字段待定义',
+                    'description' => '进销存报表页面入口已建立，待确认报表字段和数据来源后接入正式数据。',
+                    'empty' => '进销存报表字段和数据来源尚未定义。',
+                    'fields' => [],
+                ],
+            ],
         ],
     ],
     [

tests/Feature/Settings/NavigationTest.php

@@ -18,7 +18,20 @@ class NavigationTest extends FeatureTestCase
             ->assertSeeText('商品价格管理')
             ->assertSee('/workspace/order-data/raw-data', false)
             ->assertSee('/workspace/refunds/non-jingxi-refund-data', false)
-            ->assertSee('/workspace/product-inventory/normal-products', false);
+            ->assertSee('/workspace/product-inventory/normal-products', false)
+            ->assertSee('/workspace/product-inventory/inventory-report', false);
+    }
+
+    public function testInventoryReportMenuPageIsAvailable(): void
+    {
+        $this->loginAs()
+            ->get(route('business.pages.show', [
+                'section' => 'product-inventory',
+                'page' => 'inventory-report',
+            ]))
+            ->assertOk()
+            ->assertSeeText('进销存报表')
+            ->assertSeeText('进销存报表字段和数据来源尚未定义。');
     }
 
     public function testGroupedNavigationKeepsRestrictedPagePermissions(): void
@@ -91,6 +104,7 @@ class NavigationTest extends FeatureTestCase
         $receivablesIndex = array_search('store-receivables', $slugs, true);
         $orderData = $navigation[$orderIndex] ?? null;
         $refund = $navigation[$refundIndex] ?? null;
+        $productInventory = $navigation[$productIndex] ?? null;
         $financialOperations = collect($navigation)->firstWhere('slug', 'financial-operations');
 
         $this->assertNotFalse($invoiceIndex);
@@ -148,6 +162,14 @@ class NavigationTest extends FeatureTestCase
             ['订单售后费用明细', '商品推广费用明细'],
             array_column($orderData['pages'][0]['tabs'], 'title')
         );
+        $this->assertSame(
+            ['normal-products', 'online-daifa-price', 'inventory-report'],
+            array_column($productInventory['pages'], 'slug')
+        );
+        $this->assertSame(
+            ['普通商品资料', '线上代发价格', '进销存报表'],
+            array_column($productInventory['pages'], 'title')
+        );
         $this->assertArrayNotHasKey('children', $orderData['pages'][0]);
         $this->assertSame(
             ['bill-offset'],