chore: add compiled binaries to .gitignore

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: grokify

.gitignore

@@ -5,4 +5,6 @@ _*
 coverage.txt
 debug.test
 main
-main.zip
+main.zip
+agentkit
+agent-cli