Have to re-enter License & API Key after update

After installing a new update, both my Pro license key and my OpenRouter API key were gone and had to be re-entered manually.

Steps to reproduce:

1. Purchase a Pro license key

2. Install a new update

3. License key is no longer saved and must be re-entered

4. OpenRouter API key is also no longer saved and must be re-entered

Expected behavior: License key and API keys should persist across updates.