admin: 单笔标记支付并生效回执差额安全阀按容差配置化对齐

app/Http/Controllers/Admin/PlatformOrderController.php

@@ -463,7 +463,12 @@ class PlatformOrderController extends Controller
         $expectedPaid = (float) (($order->paid_amount ?? 0) > 0 ? $order->paid_amount : $order->payable_amount);
         $receiptCents = (int) round($receiptTotal * 100);
         $expectedCents = (int) round($expectedPaid * 100);
-        if ($receiptCents > 0 && abs($receiptCents - $expectedCents) >= 1) {
+
+        $tol = (float) config('saasshop.amounts.tolerance', 0.01);
+        $tolCents = (int) round($tol * 100);
+        $tolCents = max(1, $tolCents);
+
+        if ($receiptCents > 0 && abs($receiptCents - $expectedCents) >= $tolCents) {
             return redirect()->back()->with('warning', '当前订单已存在支付回执，但回执总额与订单金额不一致。为避免带病推进，请先补齐/修正支付回执后再执行「标记支付并生效」。');
         }