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/Controllers/InventoryAnalysisController.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Modules\Inventory\Controllers;
+
+use App\Http\Controllers\Controller;
+use App\Modules\Inventory\Models\Category;
+use App\Modules\Inventory\Models\Warehouse;
+use App\Modules\Inventory\Services\TurnoverService;
+use Illuminate\Http\Request;
+use Inertia\Inertia;
+
+class InventoryAnalysisController extends Controller
+{
+    protected $turnoverService;
+
+    public function __construct(TurnoverService $turnoverService)
+    {
+        $this->turnoverService = $turnoverService;
+    }
+
+    public function index(Request $request)
+    {
+        $filters = $request->only([
+            'warehouse_id', 'category_id', 'search', 'per_page', 'sort_by', 'sort_order', 'status'
+        ]);
+
+        $analysisData = $this->turnoverService->getAnalysisData($filters, $request->input('per_page', 10));
+        $kpis = $this->turnoverService->getKPIs($filters);
+
+        return Inertia::render('Inventory/Analysis/Index', [
+            'analysisData' => $analysisData,
+            'kpis' => $kpis,
+            'warehouses' => Warehouse::select('id', 'name')->get(),
+            'categories' => Category::select('id', 'name')->get(),
+            'filters' => $filters,
+        ]);
+    }
+}