Add AI tool artifacts to gitignore

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: ofriw

.gitignore

@@ -27,3 +27,7 @@ credentials.json
 
 # Dependencies
 node_modules/
+
+# AI Tools
+.chunkhound/
+.chunkhound.json