feat: add configurable operation delay

tests/operation-delay-docs.test.js

@@ -0,0 +1,15 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+
+for (const file of ['README.md', 'docs/使用教程/使用教程.md']) {
+  test(`${file} documents operation delay`, () => {
+    const source = fs.readFileSync(file, 'utf8');
+    assert.match(source, /操作间延迟/);
+    assert.match(source, /默认开启/);
+    assert.match(source, /2\s*秒/);
+    assert.match(source, /分格|OTP|验证码/);
+    assert.match(source, /邮箱|短信|轮询/);
+    assert.match(source, /confirm-oauth|platform-verify/);
+  });
+}