Where is 'RSS-Bridge URL' stored?

I have been on a wild goose chase with various AIs for hours trying to find out where to put the localhost address for my instance of BridgeRSS. I have opened an endless stream of config files both in the FreshRSS and the RSSBridge directories.

Help me, Obi Wan.

<img width="1962" height="500" alt="Image" src="https://github.com/user-attachments/assets/95a72927-4ff8-4177-ad75-ef20f876e42c" />