fix: propagate Settings config changes to service managers and live pages

- PUT /api/config now calls service_manager.update_config() for each service
  so changes write to the service's own config file, not just cell_config.json
- email_manager.get_status() now reads smtp_port/imap_port/domain from its
  config file (defaults: 587/993/cell.local) and includes them in the response
- calendar_manager.get_status() includes configured port (default 5232)
- file_manager.get_status() uses configured port from service config
- Email.jsx reads imap_port/smtp_port from API status instead of hardcoding
- Settings service sections show "port changes require container restart" note

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

api/calendar_manager.py

@@ -29,19 +29,27 @@ class CalendarManager(BaseServiceManager):
         self.safe_makedirs(self.calendar_data_dir)
         self.safe_makedirs(self.radicale_dir)
 
+    def _get_configured_port(self) -> int:
+        cfg = self.get_config()
+        if isinstance(cfg, dict) and 'error' not in cfg:
+            return cfg.get('port', 5232)
+        return 5232
+
     def get_status(self) -> Dict[str, Any]:
         """Get calendar service status"""
         try:
+            port = self._get_configured_port()
             # Check if we're running in Docker environment
             import os
             is_docker = os.path.exists('/.dockerenv') or os.environ.get('DOCKER_CONTAINER') == 'true'
-            
+
             if is_docker:
                 # Check if calendar container is actually running
                 container_running = self._check_calendar_container_status()
                 status = {
                     'running': container_running,
                     'status': 'online' if container_running else 'offline',
+                    'port': port,
                     'users_count': 0,
                     'calendars_count': 0,
                     'events_count': 0,
@@ -53,16 +61,17 @@ class CalendarManager(BaseServiceManager):
                 users = self._load_users()
                 calendars = self._load_calendars()
                 events = self._load_events()
-                
+
                 status = {
                     'running': service_running,
                     'status': 'online' if service_running else 'offline',
+                    'port': port,
                     'users_count': len(users),
                     'calendars_count': len(calendars),
                     'events_count': len(events),
                     'timestamp': datetime.utcnow().isoformat()
                 }
-            
+
             return status
         except Exception as e:
             return self.handle_error(e, "get_status")