Add kaizen agent project assets

Makefile

@@ -52,3 +52,17 @@ help:  ## Show this help message
 	@grep -Eh '^[a-zA-Z_-]+:.*?##' $(MAKEFILE_LIST) | \
 		awk 'BEGIN {FS = ":.*?## "}; {printf "  \033[36m%-24s\033[0m %s\n", $$1, $$2}' | \
 		sort
+
+# Agent Management Targets
+agents-list:
+	@echo "Installed agents:"
+	@ls agents/ 2>/dev/null | grep agent- | sed 's/agent-//g' | sed 's/.md//g' \
+	|| echo "No agents installed"
+
+agents-update:
+	@echo "Updating agents..."
+	@kaizen-agentic update
+
+agents-validate:
+	@echo "Validating agents..."
+	@kaizen-agentic validate agents/