chore(logs): demote noisy native messaging logs to debug level

"Sending to native" and "Received from native" are emitted on every
poll cycle and clutter the logs panel. Moved both to debugLog so they
only appear when Debug Mode is enabled in Settings.

extension/background/native-messaging.js

@@ -32,7 +32,7 @@ function send(msg) {
   const id = msg.id || `req_${Date.now()}_${Math.random().toString(36).slice(2)}`;
   msg.id = id;
   debugLog('send: id=', id, 'type=', msg.type, 'payload=', msg.payload && JSON.stringify(msg.payload));
-  log('Sending to native:', msg.type, msg.payload?.swarmId || '', msg.payload?.connId || '');
+  debugLog('Sending to native:', msg.type, msg.payload?.swarmId || '', msg.payload?.connId || '');
   return new Promise((resolve, reject) => {
     if (!port) {
       debugLog('send: no port, rejecting');
@@ -140,7 +140,7 @@ function connect() {
 
   port.onMessage.addListener((msg) => {
     debugLog('onMessage: full msg=', JSON.stringify(msg));
-    log('Received from native:', msg.type, msg.event || '');
+    debugLog('Received from native:', msg.type, msg.event || '');
 
     if (msg.type === 'event') {
       const payload = msg.payload || {};