Fix cursor closed error, improve feed parsing, and update worker counts

bin/pip3.12

@@ -0,0 +1,8 @@
+#!/home/x/rss/bin/python3
+# -*- coding: utf-8 -*-
+import re
+import sys
+from pip._internal.cli.main import main
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())