Replace expect.js with node:assert/strict

expect.js is unmaintained and unnecessary — Node's built-in assert
module covers all our assertion patterns. This also removes expect.js
from package.json dependencies.

Made-with: Cursor

test/test.js

@@ -8,7 +8,7 @@
 require('chromedriver');
 
 const execSync = require('child_process').execSync,
-    expect = require('expect.js'),
+    assert = require('node:assert/strict'),
     fs = require('fs'),
     path = require('path'),
     superagent = require('superagent'),
@@ -51,7 +51,7 @@ describe('Application life cycle test', function () {
 
         const currentUrl = await browser.getCurrentUrl();
         if (!currentUrl.includes(app.domain)) return;
-        expect(this.currentTest.title).to.be.a('string');
+        assert.strictEqual(typeof this.currentTest.title, 'string');
 
         const screenshotData = await browser.takeScreenshot();
         fs.writeFileSync(`./screenshots/${new Date().getTime()}-${this.currentTest.title.replaceAll(' ', '_')}.png`, screenshotData, 'base64');
@@ -65,7 +65,7 @@ describe('Application life cycle test', function () {
     function getAppInfo() {
         var inspect = JSON.parse(execSync('cloudron inspect'));
         app = inspect.apps.filter(function (a) { return a.location.indexOf(LOCATION) === 0; })[0];
-        expect(app).to.be.an('object');
+        assert.ok(app && typeof app === 'object');
     }
 
     async function confirmLicense() {
@@ -128,14 +128,14 @@ describe('Application life cycle test', function () {
 
     async function checkRedirect() {
         const response = await superagent.get(`https://${app.secondaryDomains[0].fqdn}`).set('User-Agent', 'Mozilla/5.0').redirects(0).ok(() => true);
-        expect(response.status).to.be(307);
-        expect(response.headers.location).to.be(`https://${app.fqdn}`);
+        assert.strictEqual(response.status, 307);
+        assert.strictEqual(response.headers.location, `https://${app.fqdn}`);
     }
 
     async function checkApi() {
         const response = await superagent.get(`https://${app.secondaryDomains[0].fqdn}`).ok(() => true);
-        expect(response.status).to.be(403);
-        expect(response.body.toString('utf8')).to.contain('<Code>AccessDenied</Code>');
+        assert.strictEqual(response.status, 403);
+        assert.ok(response.body.toString('utf8').includes('<Code>AccessDenied</Code>'));
     }
 
     async function changeAdminCredentials() {