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/email_manager.py

@@ -33,15 +33,25 @@ class EmailManager(BaseServiceManager):
         self.safe_makedirs(self.dovecot_dir)
         self.safe_makedirs(os.path.dirname(self.domain_config_file))
 
+    def _get_service_config(self) -> Dict[str, Any]:
+        """Read configured ports/domain from service config file."""
+        cfg = self.get_config()
+        if isinstance(cfg, dict) and 'error' not in cfg:
+            return cfg
+        return {}
+
     def get_status(self) -> Dict[str, Any]:
         """Get email service status"""
         try:
-            # Check if we're running in Docker environment
+            svc_cfg = self._get_service_config()
+            smtp_port = svc_cfg.get('smtp_port', 587)
+            imap_port = svc_cfg.get('imap_port', 993)
+            domain = svc_cfg.get('domain') or self._get_domain_config().get('domain', 'cell.local')
+
             import os
             is_docker = os.path.exists('/.dockerenv') or os.environ.get('DOCKER_CONTAINER') == 'true'
-            
+
             if is_docker:
-                # Check if email container is actually running
                 container_running = self._check_email_container_status()
                 status = {
                     'running': container_running,
@@ -49,24 +59,26 @@ class EmailManager(BaseServiceManager):
                     'smtp_running': container_running,
                     'imap_running': container_running,
                     'users_count': 0,
-                    'domain': 'cell.local',
+                    'domain': domain,
+                    'smtp_port': smtp_port,
+                    'imap_port': imap_port,
                     'timestamp': datetime.utcnow().isoformat()
                 }
             else:
-                # Check actual service status in production
                 smtp_running = self._check_smtp_status()
                 imap_running = self._check_imap_status()
-                
                 status = {
                     'running': smtp_running and imap_running,
                     'status': 'online' if (smtp_running and imap_running) else 'offline',
                     'smtp_running': smtp_running,
                     'imap_running': imap_running,
                     'users_count': len(self._load_users()),
-                    'domain': self._get_domain_config().get('domain', 'unknown'),
+                    'domain': domain,
+                    'smtp_port': smtp_port,
+                    'imap_port': imap_port,
                     'timestamp': datetime.utcnow().isoformat()
                 }
-            
+
             return status
         except Exception as e:
             return self.handle_error(e, "get_status")