docs: add vibe coding credit

Author: fpr1m3

README.md

@@ -73,3 +73,7 @@ We provide scripts to verify the plugin in a pristine environment:
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 **Note**: This plugin is designed to work with the PAI ecosystem. While it auto-initializes a basic structure, you can customize your identity by editing `$PAI_DIR/skills/core/SKILL.md`.
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+---
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+Vibe coded with ❤️ by a mix of **Claude Code** and **OpenCode**.