Update CBS Mobile App codebase

src/components/ActivityTracker/index.tsx

@@ -0,0 +1,38 @@
+import React from 'react';
+import { StyleSheet, View } from 'react-native';
+
+import { sessionManager } from '../../services/security/sessionManager';
+
+interface ActivityTrackerProps {
+  children: React.ReactNode;
+}
+
+/**
+ * Records that the user is still there, app-wide.
+ *
+ * Needed because the server's idle window only resets on an authenticated call,
+ * and most of this app reads from fixtures — someone can browse the dashboard
+ * for five minutes without one, and be signed out while actively using it.
+ *
+ * `onStartShouldSetResponderCapture` sees every touch on the way down and
+ * returning false declines to become the responder, so it never swallows a tap,
+ * a scroll or a gesture. A wrapper that actually captured touches would break
+ * every pressable beneath it.
+ */
+export const ActivityTracker = ({ children }: ActivityTrackerProps) => (
+  <View
+    style={styles.fill}
+    onStartShouldSetResponderCapture={() => {
+      sessionManager.noteInteraction();
+      return false;
+    }}
+  >
+    {children}
+  </View>
+);
+
+const styles = StyleSheet.create({
+  fill: {
+    flex: 1,
+  },
+});