docs(sponsor): enable GitHub Sponsors panel + README badge

Author: CoderDeltaLAN

.github/FUNDING.yml

@@ -1,3 +1,3 @@
-custom: ["https://www.paypal.com/donate/?hosted_button_id=YVENCBNCZWVPW"]
-# Si te unes a GitHub Sponsors, descomenta:
-# github: CoderDeltaLAN
+github: CoderDeltaLAN
+custom:
+  - https://www.paypal.com/donate/\?hosted_button_id\=YVENCBNCZWVPW

README.md

@@ -13,6 +13,7 @@ A lean, production-grade **Python CLI** that ingests **ai-patch-verifier (APV)**
 [![Release](https://img.shields.io/github/v/release/CoderDeltaLAN/diff-risk-dashboard?display_name=tag)](https://github.com/CoderDeltaLAN/diff-risk-dashboard/releases)
 [![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](LICENSE)
 
+[![Sponsor](https://img.shields.io/github/sponsors/CoderDeltaLAN?style=for-the-badge&label=Sponsor)](https://github.com/sponsors/CoderDeltaLAN)
 </div>
 
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