Remove the enable/disable toggle from the server UI, logs page, and
Sentinel API so is_sentinel_enabled is derived and read-only. Enable
existing regular servers via migration, start Sentinel after validate-
and-install, and drop the daily ServerManagerJob restart.
Ensure a Sentinel endpoint from instance FQDN/IP when enabling, use process dialogs for validation with install state, and tidy server create, boarding, metrics empty state, and log timestamps.
Dispatch server show refreshes after Sentinel and metrics toggles, preserve editable Sentinel form fields during restart events, and gate custom image editing by update permission.
