feat: modernize dashboard widgets

apps/docs/docs/widgets/ups/index.mdx

@@ -4,6 +4,8 @@ description: "Monitor the status of your UPS devices through a NUT server."
 hide_title: true
 ---
 
+import { WidgetInteractionGuide } from "@site/src/components/widgets/interactions";
+
 import { WidgetHeader } from "@site/src/components/widgets/header";
 import { AddingWidget } from "@site/src/components/widgets/adding";
 import { WidgetConfig } from "@site/src/components/widgets/configuration";
@@ -17,6 +19,10 @@ This widget displays the status of the UPS devices reported by a Network UPS Too
 status (online, on battery, charging or low battery), battery charge and estimated runtime, output load, and input and
 output voltage.
 
+Every device keeps an integration-scoped identity. Advanced view always labels each device with its owning integration, while compact layouts add the source label only when multiple healthy integrations are present.
+
+When multiple UPS integrations are selected, devices from healthy sources remain visible if another source fails. A warning indicator identifies each unavailable integration without exposing private request details. If every selected integration fails, the widget reports an error; if cached data remains visible after a later total failure, a stale-data warning is shown.
+
 ### Layouts
 
 import screenshotFull from "./img/screenshot.png";
@@ -41,6 +47,8 @@ The widget adapts to the size of the tile, so it stays readable from a full dash
   ]}
 />
 
+<WidgetInteractionGuide />
+
 ### Adding the widget
 
 <AddingWidget />