feat(app): add running status ring and lighten status dots

Keep the animated ring phase-locked across hosts and derive its knockout surface from each host's actual interaction state. Align filled status circles at 6px while preserving the larger needs-input alert.

Co-authored-by: Christoph Leiter <christoph@leiter.io>

packages/app/src/screens/workspace/workspace-desktop-tabs-row.tsx

@@ -508,7 +508,7 @@ function TabHandleContent({
   return (
     <View style={styles.tabHandle} dataSet={tabHandleDataSet}>
       <View style={styles.tabIcon}>
-        <WorkspaceTabIcon presentation={presentation} active={isHighlighted} />
+        <WorkspaceTabIcon presentation={presentation} active={isHighlighted} backdrop="surface0" />
       </View>
       {showLabel && presentation.titleState === "loading" ? (
         <View style={tabLabelSkeletonStyle} />