feat: harden content workflows and staging smoke tests

scripts/test-content-editor-save.js

@@ -0,0 +1,24 @@
+#!/usr/bin/env node
+
+const assert = require('assert/strict');
+const fs = require('fs');
+const os = require('os');
+const path = require('path');
+const { backupAndWriteAtomically } = require('../content-editor');
+
+const tempDir = fs.mkdtempSync(path.join(os.tmpdir(), 'mozdit-content-save-'));
+try {
+  const target = path.join(tempDir, 'home.json');
+  const backupDir = path.join(tempDir, 'backups');
+  const original = { title: 'Eredeti', enabled: true };
+  const replacement = { title: 'Új', enabled: false };
+  fs.writeFileSync(target, JSON.stringify(original) + '\n');
+
+  const backupFile = backupAndWriteAtomically(target, replacement, backupDir);
+  assert.deepEqual(JSON.parse(fs.readFileSync(target, 'utf8')), replacement);
+  assert.deepEqual(JSON.parse(fs.readFileSync(backupFile, 'utf8')), original);
+  assert.equal(fs.readdirSync(tempDir).some(name => name.endsWith('.tmp')), false);
+  console.log('Content Editor atomic save test: OK');
+} finally {
+  fs.rmSync(tempDir, { recursive: true, force: true });
+}