feat: distinguish remote operation and request activity

src/modules/features/RemoteActivityStatus.ts

@@ -1,4 +1,27 @@
-/** Returns whether the status UI should report HTTP traffic or a finite remote operation in progress. */
-export function hasRemoteActivity(requestCount: number, responseCount: number, boundedRemoteActivityCount: number) {
-    return requestCount - responseCount !== 0 || boundedRemoteActivityCount !== 0;
+/** Status icon for a finite remote operation whose lifetime is known. */
+export const REMOTE_OPERATION_ACTIVITY_ICON = "📲";
+
+/** Status icon for approximate physical remote-request activity. */
+export const REMOTE_REQUEST_ACTIVITY_ICON = "🌐";
+
+/** Avoids hiding very short remote requests before the status bar can render them. */
+export const REMOTE_REQUEST_ACTIVITY_MINIMUM_VISIBLE_MS = 150;
+
+export type RemoteActivityStatus = {
+    remoteOperationCount: number;
+    trackedRequestCount: number;
+};
+
+/** Returns the non-negative difference between tracked request starts and completions. */
+export function getTrackedRequestCount(requestCount: number, responseCount: number): number {
+    return Math.max(0, requestCount - responseCount);
+}
+
+/** Formats the compact prefix shown before the replication status. */
+export function formatRemoteActivityStatusLabel(status: RemoteActivityStatus): string {
+    const labels = [
+        status.remoteOperationCount > 0 ? REMOTE_OPERATION_ACTIVITY_ICON : "",
+        status.trackedRequestCount > 0 ? `${REMOTE_REQUEST_ACTIVITY_ICON}${status.trackedRequestCount}` : "",
+    ].filter((label) => label !== "");
+    return labels.length > 0 ? `${labels.join(" ")} ` : "";
 }