Add Artfight AI policy disclaimer to README

Notes the ambiguity around AI-assisted HTML vs AI-generated art,
flags that staff have been contacted for clarification, and advises
users on keeping their artwork within Artfight's rules.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -26,6 +26,20 @@ Everything here is **free to use and modify** for your own Artfight pages.
 
 ---
 
+## ⚠️ Artfight's AI Policy & This Repo
+
+Artfight does not allow AI-generated content to be submitted as attacks or used in character art. This repo uses AI (Claude) to help **write HTML code** — not to generate any artwork or images.
+
+I believe these are different things, but Artfight's rules are broad and Claude is explicitly named. **I have reached out to Artfight staff for clarification** and will update this section once I have an answer.
+
+In the meantime:
+
+- **Do not** use AI to generate any artwork for your Artfight characters or attacks
+- This repo is **code only** — all art on your profile is your responsibility to keep within Artfight's rules
+- If Artfight rules that AI-assisted HTML also falls under their policy, I will update this repo accordingly
+
+---
+
 ## 🤖 AI Transparency
 
 I use AI (Claude Code) as a coding assistant when building some of these files. Because art communities have valid concerns about AI, I believe in being fully transparent: