refactor(inventory): 重構倉庫管理邏輯，移除 is_sellable 欄位並改由類型判定可用庫存

resources/js/Components/Warehouse/WarehouseCard.tsx

@@ -100,12 +100,18 @@ export default function WarehouseCard({
 
           {/* 統計區塊 - 狀態標籤 */}
           <div className="space-y-3">
-            {/* 銷售狀態 */}
+            {/* 銷售狀態與可用性說明 */}
             <div className="flex items-center justify-between">
-              <span className="text-sm text-gray-500">銷售狀態</span>
-              <Badge variant={warehouse.is_sellable ? "default" : "secondary"} className={warehouse.is_sellable ? "bg-green-600" : "bg-gray-400"}>
-                {warehouse.is_sellable ? "可銷售" : "暫停銷售"}
-              </Badge>
+              <span className="text-sm text-gray-500">庫存可用性</span>
+              {warehouse.type === 'quarantine' ? (
+                <Badge variant="secondary" className="bg-red-100 text-red-700 border-red-200">
+                  不計入可用
+                </Badge>
+              ) : (
+                <Badge variant="default" className="bg-green-600">
+                  計入可用
+                </Badge>
+              )}
             </div>
 
             {/* 低庫存警告狀態 */}