add AGENTS.md with git config instructions for AI agents

AGENTS.md

@@ -0,0 +1,16 @@
+# Agent Instructions
+
+## Git Configuration
+Before making any commits, always run:
+
+```bash
+git config user.name "Celestia Ludenberg"
+git config user.email "ash8820@proton.me"
+```
+
+This must be done in **every session** before committing or pushing. Do not use any default git identity.
+
+## Repository
+- Arch Linux live ISO based on EndeavourOS-ISO
+- Provides KDE Plasma live environment with Cnchi installer
+- Build with: `./prepare.sh && sudo ./mkarchiso -v "."`