[REFACTOR] 優化資料庫查詢效能：在多個 Service 與 Controller 中加入 select 欄位限制，並新增租戶資料表索引 Migration。

app/Modules/Inventory/Services/InventoryService.php

@@ -13,7 +13,7 @@ class InventoryService implements InventoryServiceInterface
 {
     public function getAllWarehouses()
     {
-        return Warehouse::all();
+        return Warehouse::select('id', 'name', 'code', 'type')->get();
     }
 
     public function getTopInventoryValue(int $limit = 5): \Illuminate\Support\Collection
@@ -38,12 +38,14 @@ class InventoryService implements InventoryServiceInterface
 
     public function getAllProducts()
     {
-        return Product::with(['baseUnit', 'largeUnit'])->get();
+        return Product::select('id', 'name', 'code', 'base_unit_id', 'large_unit_id')
+            ->with(['baseUnit:id,name', 'largeUnit:id,name'])
+            ->get();
     }
 
     public function getUnits()
     {
-        return \App\Modules\Inventory\Models\Unit::all();
+        return \App\Modules\Inventory\Models\Unit::select('id', 'name')->get();
     }
 
     public function getInventoriesByIds(array $ids, array $with = [])