fix: create clash_provide_config file and update subscription settings

- Improved comments in settings.ini for better clarity on renew behavior and subscription URL usage.

box/scripts/box.tool

@@ -391,6 +391,9 @@ upsubs() {
           log Debug "Downloading ${update_file_name}"
           if upfile "${update_file_name}" "${subscription_url_clash}"; then
             log Info "${update_file_name} saved"
+            # Make sure the folder exists
+            mkdir -p "$(dirname "$clash_provide_config")"
+            touch "$clash_provide_config"
             # If there is a yq command, extract the proxy information from the yml and output it to the clash_provide_config file
             if [ "${enhanced}" = "true" ]; then
               if ${yq} 'has("proxies")' "${update_file_name}" | grep -q "true"; then

box/settings.ini

@@ -74,12 +74,12 @@ run_crontab="false"
 # Type "su -c /data/adb/box/scripts/box.tool geox" to update geox
 update_geo="false"
 
-# If "renew=true" it will update config.yaml not the subscription configuration. Type "su -c /data/adb/box/scripts/box.tool subs" to update subscription
-renew=false
+# If "renew=true", it will update $name_clash_config; if false, it will only retrieve proxies: [] for proxy-providers: [].
+# Type "su -c /data/adb/box/scripts/box.tool subs" to update subscription
+renew="true"
 update_subscription="false"
-
-# Example: clash subscription URL
-subscription_url_clash='https://proxy-list.cloudaccess.host/vless/api?cc=ID,US,JP,SG&cdn=true&tls=true&limit=10&format=clash' # This is just an example.
+# Source subscription URL for Clash configuration
+subscription_url_clash='http://127.0.0.1:12345/api/file/clash.yaml'
 
 # Clash configuration
 name_clash_config="config.yaml"
@@ -90,6 +90,7 @@ name_provide_clash_config="subscription.yaml"
 clash_provide_config="${box_dir}/clash/provide/${name_provide_clash_config}"
 
 # Support rules specified in subscriptions. This is useful when the subscription contains customized rules as well.
+# It will fetch rules: [] from the $subscription_url_clash configuration and add them to $name_clash_config; this has no effect if renew=true.
 custom_rules_subs="false"
 name_provide_clash_rules="rules.yaml"
 clash_provide_rules="${box_dir}/clash/provide/${name_provide_clash_rules}"