docs: add instructions for downloading AGENT.md for Amp

Generated-by: aiautocommit

Author: iloveitaly

README.md

@@ -18,6 +18,9 @@ curl -sSL https://raw.githubusercontent.com/iloveitaly/llm-ide-prompts/master/do
 
 # Download .github rules
 curl -sSL https://raw.githubusercontent.com/iloveitaly/llm-ide-prompts/master/download.sh | sh -s github
+
+# Download AGENT.md (for Amp)
+curl -sSL https://raw.githubusercontent.com/iloveitaly/llm-ide-prompts/master/download.sh > AGENT.mdde
 ```
 
 ## Development