feat(monitoring): add Laravel Nightwatch monitoring support

- Install laravel/nightwatch package for application monitoring
- Create Nightwatch console command to start the monitoring agent
- Add NIGHTWATCH_ENABLED and NIGHTWATCH_TOKEN environment variables
- Configure nightwatch settings in config/constants.php
- Set up Docker s6-overlay services for both development and production
- Disable Nightwatch by default in test environment

.env.development.example

@@ -24,6 +24,10 @@ RAY_ENABLED=false
 # Enable Laravel Telescope for debugging
 TELESCOPE_ENABLED=false
 
+# Enable Laravel Nightwatch monitoring
+NIGHTWATCH_ENABLED=false
+NIGHTWATCH_TOKEN=
+
 # Selenium Driver URL for Dusk
 DUSK_DRIVER_URL=http://selenium:4444