Document RetroBat web API access and localhost configuration for Zaparoo.

*Issue created from Discord*

**Source:** [Zaparoo / #general](https://discord.com/channels/1136235625486487622/1141916590242279495/1504882772374982666)

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### Reported Message

**>>> Target Message:**
> **Reporter** - 2026-05-15 16:26 UTC
> 
> Got it working with help in the retrobat discord, needed to turn on the web api access in retrobat settings and add localhost to my hosts file,
