Optimize settings save by skipping unchanged values

- Compare WiFi networks before running reconfigure_wifi
- Skip saving other settings that haven't changed
- Add diagnostic logs to track when settings are changed

🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>

Author: dbieber

gonotego/settings/server.py

@@ -175,12 +175,26 @@ def do_POST(self):
           try:
             # Handle WiFi networks specially
             if key == 'WIFI_NETWORKS':
-              wifi.save_networks(value)
-              wifi.update_wpa_supplicant_config()
-              wifi.reconfigure_wifi()
+              # Get current networks before saving the new ones
+              current_networks = wifi.get_networks()
+              
+              # Compare current and new networks
+              if json.dumps(current_networks) != json.dumps(value):
+                # Only save and reconfigure if networks have actually changed
+                wifi.save_networks(value)
+                wifi.update_wpa_supplicant_config()
+                wifi.reconfigure_wifi()
+                print("WiFi networks changed, reconfigured WiFi")
+              else:
+                print("WiFi networks unchanged, skipping reconfiguration")
             else:
-              # For all other settings, just use settings.set
-              settings.set(key, value)
+              # For all other settings, only save if changed
+              current_value = settings.get(key)
+              if str(current_value) != str(value):
+                settings.set(key, value)
+                print(f"Setting {key} changed, saved new value")
+              else:
+                print(f"Setting {key} unchanged, skipping save")
           except Exception as e:
             print(f"Error setting {key}: {e}")