docs(readme): link to @KIAN-IRANI's comprehensive Persian setup guide under the video

Adds a centered link below the video pointing to https://kian-irani.github.io/mhrv-setup-full-tunell/, with credit to @KIAN-IRANI (https://github.com/KIAN-IRANi). Both links open in a new tab. Persian-speaking users now have three escalating depths of guide right at the top of the README: the 5-min Quick Start, the YouTube walk-through, and Kian Irani's full long-form guide.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: therealaleph

README.md

@@ -18,6 +18,11 @@
     <img src="https://img.youtube.com/vi/voCwxgvWR5U/maxresdefault.jpg" alt="راهنمای راه اندازی mhrv-rs به فارسی" width="560">
   </a>
 </p>
+<p align="center">
+  <a href="https://kian-irani.github.io/mhrv-setup-full-tunell/" target="_blank" rel="noopener noreferrer">راهنمای جامع راه اندازی به زبان فارسی با تشکر از Kian Irani</a>
+  <br>
+  <sub>(<a href="https://github.com/KIAN-IRANi" target="_blank" rel="noopener noreferrer">github.com/KIAN-IRANi</a>)</sub>
+</p>
 
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