refactor(js): 复制失败toast文案收敛为toastCopyFailed并更新护栏

tests/Feature/AdminJsCopyFailuresShouldUseToastErrorFirstTest.php

@@ -15,6 +15,10 @@ class AdminJsCopyFailuresShouldUseToastErrorFirstTest extends TestCase
         $this->assertIsString($js);
 
         // 复制失败时应优先 toastError（alert 作为降级）
-        $this->assertStringContainsString("toastError('复制失败", $js);
+        // 允许通过 wrapper（toastCopyFailed）间接调用 toastError。
+        $this->assertTrue(
+            str_contains($js, "toastError('复制失败") || str_contains($js, 'toastCopyFailed('),
+            'copy failures should use toastError (directly or via toastCopyFailed wrapper)'
+        );
     }
 }

tests/Feature/AdminJsToastCopyFailedHelperShouldExistTest.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminJsToastCopyFailedHelperShouldExistTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_admin_js_should_include_toast_copy_failed_helper(): void
+    {
+        $js = file_get_contents(public_path('js/admin.js'));
+        $this->assertIsString($js);
+
+        $this->assertStringContainsString('function toastCopyFailed', $js);
+        $this->assertStringContainsString("msg = '复制失败'", $js);
+        $this->assertStringContainsString("return toastError(msg)", $js);
+    }
+}