Cloudflare Worker integration for `any-auto-register`, specifically concerning custom domain management.

A user reports inconsistent behavior with Cloudflare Workers and custom domains within `any-auto-register`, specifically that the system randomly reuses previously configured domains instead of adhering to a fixed setting. This indicates a critical configuration or state management bug impacting the reliability of custom domain integration. For a tool designed for automation, unpredictable domain usage introduces significant operational instability and potential security or deliverability issues, especially in scenarios requiring consistent domain identity. This pain point directly undermines the perceived control and predictability users expect from an automation platform, necessitating a fix to ensure stable custom domain resolution.