refactor: simplify pre-push hook by removing unnecessary lines

Author: kjanat

.husky/pre-push

@@ -1,6 +1,3 @@
-#!/usr/bin/env sh
-. "$(dirname -- "$0")/_/husky.sh"
-
 # Cross-platform friendly hook for both Linux and Windows
 echo "🧪 Running all tests before push..."
 npx cross-env npm test