Fixed critical bug where jq command was incomplete in save_config function,
causing configuration save to fail with jq usage error when configuring
rotation sites.
Issue: The jq -n command on lines 3476-3493 had all arguments but was
missing the JSON template/filter, causing jq to output its help text
instead of creating the config file.
Fix: Added complete JSON object template to jq command with all required
fields (unit, autoswitch, enableTouch, etc.) and empty tabs array.
Version bumped from 0.9.6-2 to 0.9.6-3.
