add in user/admin a note about the security update warning and in the…

docs/admin/configuration/frontend-update-check.md

@@ -10,7 +10,14 @@ draft: false
 
 By default, OpenCloud performs a frontend check to verify if you are running the latest version.
 
+:::note
+
+When the frontend update check detects a security-critical upgrade, administrators may see a warning in the lower-left corner of the web interface. This warning indicates that the available upgrade should be reviewed and applied with priority.
+
+:::
+
 <img src={require("./img/frontend-update-check/check-true.png").default} alt="check is true" width="520"/>
+<img src={require("./img/frontend-update-check/check-true-critical.png").default} alt="critical check is true" width="520"/>
 
 ## Edit the `.env` File
 

docs/user/admin/settings.md

@@ -19,6 +19,7 @@ The admin area of OpenCloud provides the main tools for managing your organizati
   <img src={require("./img/settings/admin_general.png").default} alt="Admin general" width="1920"/>
 
 :::note
+If a security-critical upgrade is available, administrators may also see a warning in the lower-left corner of the web interface.
 An administrator may disable the version check. If this option is turned off, information about newer versions will not be displayed.
 :::
 

i18n/de/docusaurus-plugin-content-docs/current/user/admin/settings.md

@@ -18,6 +18,7 @@ Im Admin-Bereich von OpenCloud haben Sie umfangreiche Verwaltungsoptionen für I
   <img src={require("./img/settings/allgemein.png").default} alt="Admin general" width="1920"/>
 
 :::note
+Wenn ein sicherheitskritisches Upgrade verfügbar ist, können Administratoren zusätzlich eine Warnung unten links in der Weboberfläche sehen.
 Die Versionsprüfung kann von einem Administrator deaktiviert worden sein.
 Wenn diese Option ausgeschaltet ist, werden Informationen über neuere Versionen nicht angezeigt.
 :::