feat(inventory): 新增庫存分析模組

- 實作 InventoryAnalysisController 與 TurnoverService
- 新增庫存分析前端頁面 (Inventory/Analysis/Index.tsx)
- 整合路由與選單
- 統一分頁邏輯與狀態顯示
- 更新 UI Consistency Skill 文件

app/Modules/Inventory/Routes/web.php

@@ -14,6 +14,7 @@ use App\Modules\Inventory\Controllers\AdjustDocController;
 use App\Modules\Inventory\Controllers\InventoryReportController;
 
 use App\Modules\Inventory\Controllers\StockQueryController;
+use App\Modules\Inventory\Controllers\InventoryAnalysisController;
 
 Route::middleware('auth')->group(function () {
     
@@ -32,6 +33,11 @@ Route::middleware('auth')->group(function () {
         Route::get('/inventory/report/{product}', [InventoryReportController::class, 'show'])->name('inventory.report.show');
     });
 
+    // 庫存分析 (Inventory Analysis)
+    Route::middleware('permission:inventory_report.view')->group(function () {
+        Route::get('/inventory/analysis', [InventoryAnalysisController::class, 'index'])->name('inventory.analysis.index');
+    });
+
     // 類別管理 (用於商品對話框) - 需要商品權限
     Route::middleware('permission:products.view')->group(function () {
         Route::get('/categories', [CategoryController::class, 'index'])->name('categories.index');