修复泥点弹窗透明问题

为泥点消耗确认弹窗补齐平台主题作用域和模态面板样式

让平台状态弹窗合并默认主题遮罩，避免自定义遮罩覆盖主题变量

补充弹窗默认样式测试和团队排障记录

src/components/common/PlatformMudPointConfirmDialog.test.tsx

@@ -51,3 +51,27 @@ test('supports extra detail copy and close button override', () => {
   expect(within(dialog).getByText('本次会覆盖当前待确认素材。')).toBeTruthy();
   expect(screen.queryByRole('button', { name: '关闭' })).toBeNull();
 });
+
+test('applies the stronger default overlay and panel chrome', () => {
+  render(
+    <PlatformMudPointConfirmDialog
+      open
+      points={10}
+      onClose={() => {}}
+      onConfirm={() => {}}
+      portal={false}
+    />,
+  );
+
+  const dialog = screen.getByRole('dialog', { name: '确认消耗泥点' });
+  const overlay = dialog.parentElement as HTMLElement;
+
+  expect(overlay.className).toContain('platform-modal-backdrop');
+  expect(overlay.className).toContain('platform-theme--light');
+  expect(overlay.className).toContain('!bg-black/45');
+  expect(dialog.className).toContain('platform-modal-shell');
+  expect(dialog.className).toContain('max-w-xs');
+  expect(dialog.className).toContain(
+    'shadow-[0_24px_70px_rgba(15,23,42,0.22)]',
+  );
+});