diff --git a/src/components/dev/NotificationDebugPanel.vue b/src/components/dev/NotificationDebugPanel.vue
index e959236f..98d08b72 100644
--- a/src/components/dev/NotificationDebugPanel.vue
+++ b/src/components/dev/NotificationDebugPanel.vue
@@ -277,8 +277,9 @@
 </template>
 
 <script setup lang="ts">
-import { computed, onMounted, ref } from "vue";
+import { computed, onBeforeUnmount, onMounted, ref } from "vue";
 import { copyToClipboard } from "@/services/ClipboardService";
+import { subscribe } from "@/services/notifications/NotificationDebugEvents";
 import { NotificationDebugService } from "@/services/notifications/NotificationDebugService";
 
 type PendingInfo = {
@@ -319,7 +320,8 @@ const truncatedFcmToken = computed(() => {
   return `${t.slice(0, 12)}…${t.slice(-8)}`;
 });
 
-const eventLog = computed(() => NotificationDebugService.eventLog.value);
+const eventLog = ref<string[]>([]);
+let unsubscribeEventLog: (() => void) | undefined;
 
 const intervalLabel = computed(() => {
   const preset = presets.find((p) => p.ms === intervalMs.value);
@@ -428,7 +430,14 @@ async function onCopyFcmToken(): Promise<void> {
 }
 
 onMounted(() => {
+  unsubscribeEventLog = subscribe((entries) => {
+    eventLog.value = [...entries];
+  });
   syncBackendState();
   void refreshPending();
 });
+
+onBeforeUnmount(() => {
+  unsubscribeEventLog?.();
+});
 </script>
diff --git a/src/services/notifications/NativeNotificationService.ts b/src/services/notifications/NativeNotificationService.ts
index 6ba3a94a..d75f87f8 100644
--- a/src/services/notifications/NativeNotificationService.ts
+++ b/src/services/notifications/NativeNotificationService.ts
@@ -20,6 +20,14 @@ import {
   getNotificationApiBaseUrl,
   getTestMode,
 } from "./NotificationDebugConfig";
+import {
+  logNotificationClearing,
+  logRefreshFailure,
+  logRefreshStarted,
+  logRefreshSuccess,
+  logScheduleReplacement,
+} from "./notificationLog";
+import { logNotification } from "./NotificationDebugEvents";
 
 /**
  * Extended type for DailyNotification that includes the actual Swift implementation
@@ -560,12 +568,19 @@ export type RefreshNotificationsResult = {
  * Re-applies native API fetcher credentials (JWT pool, active DID) so background
  * notification workers can run. No UI; safe from push handlers while backgrounded.
  */
-export async function refreshNotificationsWithDiagnostics(): Promise<RefreshNotificationsResult> {
+export async function refreshNotificationsWithDiagnostics(options?: {
+  source?: string;
+}): Promise<RefreshNotificationsResult> {
+  const startedAt = performance.now();
+  logRefreshStarted(options?.source);
+
   if (!Capacitor.isNativePlatform()) {
+    const errorMessage = "not a native platform";
+    logRefreshFailure(startedAt, errorMessage);
     return {
       ok: false,
       scheduledCount: 0,
-      errorMessage: "not a native platform",
+      errorMessage,
     };
   }
 
@@ -581,15 +596,17 @@ export async function refreshNotificationsWithDiagnostics(): Promise<RefreshNoti
     });
 
     if (!res.ok) {
+      const errorMessage = res.statusText || `HTTP ${res.status}`;
       logger.warn("[NativeNotificationService] refreshNotifications failed", {
         status: res.status,
         statusText: res.statusText,
       });
+      logRefreshFailure(startedAt, errorMessage, res.status);
       return {
         ok: false,
         scheduledCount: 0,
         status: res.status,
-        errorMessage: res.statusText || `HTTP ${res.status}`,
+        errorMessage,
       };
     }
 
@@ -599,10 +616,12 @@ export async function refreshNotificationsWithDiagnostics(): Promise<RefreshNoti
       ? payload.nextNotifications.length
       : 0;
     await applyNotificationRefreshPayload(data);
+    logRefreshSuccess(startedAt, scheduledCount);
     return { ok: true, scheduledCount };
   } catch (err) {
     logger.error("[NativeNotificationService] Refresh failed", err);
     const message = err instanceof Error ? err.message : String(err);
+    logRefreshFailure(startedAt, message);
     return { ok: false, scheduledCount: 0, errorMessage: message };
   }
 }
@@ -648,15 +667,14 @@ export async function applyNotificationRefreshPayload(
     .filter((t): t is number => typeof t === "number" && Number.isFinite(t));
 
   if (timestamps.length === 0) {
+    logNotification("Schedule replacement skipped (no valid timestamps)");
     return;
   }
 
   // Keep existing behavior: ensure background worker credentials are current.
   await configureNativeFetcherIfReady();
 
-  // Backend (or debug harness) is the source of truth: apply exact timestamps.
-  // eslint-disable-next-line no-console
-  console.log("[Notifications] Applying timestamps:", nextNotifications);
+  logScheduleReplacement(timestamps.length);
 
   const plugin = DailyNotification as unknown as {
     clearAllNotifications?: () => Promise<void>;
@@ -667,14 +685,18 @@ export async function applyNotificationRefreshPayload(
   };
 
   if (typeof plugin.clearAllNotifications === "function") {
+    logNotificationClearing("clearAllNotifications");
     await plugin.clearAllNotifications();
   } else if (typeof plugin.cancelAllNotifications === "function") {
-    // Back-compat: older builds expose cancelAllNotifications.
+    logNotificationClearing("cancelAllNotifications");
     await plugin.cancelAllNotifications();
   } else {
     logger.warn(
       "[NativeNotificationService] No clearAllNotifications/cancelAllNotifications on plugin; cannot replace schedule",
     );
+    logNotification(
+      "Schedule replacement aborted (clear method unavailable on plugin)",
+    );
     return;
   }
 
@@ -682,10 +704,16 @@ export async function applyNotificationRefreshPayload(
     logger.warn(
       "[NativeNotificationService] scheduleNotifications not available on plugin; cannot apply timestamps",
     );
+    logNotification(
+      "Schedule replacement aborted (scheduleNotifications unavailable)",
+    );
     return;
   }
 
   await plugin.scheduleNotifications({ timestamps });
+  logNotification(
+    `Schedule replacement applied (${timestamps.length} timestamp(s))`,
+  );
 }
 
 /**
@@ -695,6 +723,13 @@ export async function handleCapacitorPushNotificationReceived(
   notification: PushNotificationSchema,
 ): Promise<void> {
   if (notification.data?.type === "WAKEUP_PING") {
-    await refreshNotifications();
+    logNotification("WAKEUP_PING handler — invoking refresh");
+    await refreshNotificationsWithDiagnostics({ source: "WAKEUP_PING" });
+    return;
   }
+  const type =
+    typeof notification.data?.type === "string"
+      ? notification.data.type
+      : "(none)";
+  logNotification(`push handler ignored type=${type}`);
 }
diff --git a/src/services/notifications/NotificationDebugEvents.ts b/src/services/notifications/NotificationDebugEvents.ts
new file mode 100644
index 00000000..a454574f
--- /dev/null
+++ b/src/services/notifications/NotificationDebugEvents.ts
@@ -0,0 +1,74 @@
+/**
+ * Lightweight in-memory notification debug log + console observability.
+ * Used by production notification flows and the Notification Debug Panel.
+ */
+
+export const NOTIFICATION_LOG_PREFIX = "[Notifications]";
+
+const MAX_ENTRIES = 100;
+
+type LogListener = (entries: readonly string[]) => void;
+
+const entries: string[] = [];
+const listeners = new Set<LogListener>();
+
+function formatTime(d: Date): string {
+  const hh = d.getHours().toString().padStart(2, "0");
+  const mm = d.getMinutes().toString().padStart(2, "0");
+  const ss = d.getSeconds().toString().padStart(2, "0");
+  return `${hh}:${mm}:${ss}`;
+}
+
+function formatPanelLine(message: string): string {
+  return `[${formatTime(new Date())}] ${message}`;
+}
+
+function notifyListeners(): void {
+  const snapshot = [...entries] as readonly string[];
+  for (const listener of listeners) {
+    listener(snapshot);
+  }
+}
+
+/** Append a timestamped line to the in-memory debug log (panel). */
+export function appendLog(message: string): void {
+  entries.push(formatPanelLine(message));
+  if (entries.length > MAX_ENTRIES) {
+    entries.splice(0, entries.length - MAX_ENTRIES);
+  }
+  notifyListeners();
+}
+
+export function subscribe(listener: LogListener): () => void {
+  listeners.add(listener);
+  listener([...entries]);
+  return () => {
+    listeners.delete(listener);
+  };
+}
+
+export function clearNotificationDebugLogs(): void {
+  entries.length = 0;
+  notifyListeners();
+}
+
+export function getNotificationDebugLogEntries(): readonly string[] {
+  return [...entries];
+}
+
+/**
+ * Structured console log (`[Notifications] …`) plus debug panel entry.
+ */
+export function logNotification(
+  message: string,
+  detail?: Record<string, unknown>,
+): void {
+  if (detail !== undefined) {
+    // eslint-disable-next-line no-console
+    console.log(`${NOTIFICATION_LOG_PREFIX} ${message}`, detail);
+  } else {
+    // eslint-disable-next-line no-console
+    console.log(`${NOTIFICATION_LOG_PREFIX} ${message}`);
+  }
+  appendLog(message);
+}
diff --git a/src/services/notifications/NotificationDebugService.ts b/src/services/notifications/NotificationDebugService.ts
index 4cff4728..36ebbe17 100644
--- a/src/services/notifications/NotificationDebugService.ts
+++ b/src/services/notifications/NotificationDebugService.ts
@@ -8,9 +8,13 @@
  */
 
 import { Capacitor } from "@capacitor/core";
-import { ref, readonly, type Ref } from "vue";
 import type { PushNotificationSchema } from "@capacitor/push-notifications";
 import { logger } from "@/utils/logger";
+import {
+  clearNotificationDebugLogs,
+  logNotification,
+} from "./NotificationDebugEvents";
+import { logNotificationClearing } from "./notificationLog";
 import {
   getBackendBaseUrl,
   getNotificationApiBaseUrl,
@@ -56,40 +60,9 @@ function isUnimplementedError(e: unknown): boolean {
 
 const LOG = "[NotificationDebugService]";
 
-function formatTime(d: Date): string {
-  const hh = d.getHours().toString().padStart(2, "0");
-  const mm = d.getMinutes().toString().padStart(2, "0");
-  const ss = d.getSeconds().toString().padStart(2, "0");
-  return `${hh}:${mm}:${ss}`;
-}
-
-function logLine(message: string): string {
-  return `[${formatTime(new Date())}] ${message}`;
-}
-
-function truncateToken(token: string): string {
-  const t = token.trim();
-  if (t.length <= 24) {
-    return t;
-  }
-  return `${t.slice(0, 12)}…${t.slice(-8)}`;
-}
-
-const _eventLog: Ref<string[]> = ref([]);
-
-const EVENT_LOG_MAX = 100;
-
-function append(message: string): void {
-  const line = logLine(message);
-  _eventLog.value = [..._eventLog.value, line].slice(-EVENT_LOG_MAX);
-  logger.debug(`${LOG} ${message}`);
-}
-
 export const NotificationDebugService = {
-  eventLog: readonly(_eventLog),
-
   clearDebugLogs(): void {
-    _eventLog.value = [];
+    clearNotificationDebugLogs();
   },
 
   getActiveBackendUrl(): string {
@@ -102,7 +75,7 @@ export const NotificationDebugService = {
 
   saveBackendBaseUrl(url: string): void {
     setBackendBaseUrl(url);
-    append(
+    logNotification(
       url.trim()
         ? `Backend URL saved (${getNotificationApiBaseUrl()})`
         : "Backend URL cleared (using default)",
@@ -111,7 +84,7 @@ export const NotificationDebugService = {
 
   setTestModeEnabled(enabled: boolean): void {
     setTestMode(enabled);
-    append(`Test mode ${enabled ? "enabled" : "disabled"}`);
+    logNotification(`Test mode ${enabled ? "enabled" : "disabled"}`);
   },
 
   isTestModeEnabled(): boolean {
@@ -123,34 +96,20 @@ export const NotificationDebugService = {
   },
 
   async registerTokenNow(): Promise<void> {
-    append("Register token started");
-    try {
-      const token = await reregisterFcmTokenNow();
-      append(`Register token success (${truncateToken(token)})`);
-    } catch (e: unknown) {
-      const msg = e instanceof Error ? e.message : String(e);
-      append(`Register token failure: ${msg}`);
-      throw e;
-    }
+    logNotification("Register token now (debug panel)");
+    await reregisterFcmTokenNow();
   },
 
   async triggerBackendRefresh(): Promise<void> {
-    append("Refresh started");
-    const result = await refreshNotificationsWithDiagnostics();
-    if (result.ok) {
-      append(`Refresh success`);
-      append(`Scheduled ${result.scheduledCount} notifications`);
-    } else {
-      const detail = result.errorMessage ?? "unknown error";
-      const status = result.status != null ? ` (HTTP ${result.status})` : "";
-      append(`Refresh failure: ${detail}${status}`);
-    }
+    await refreshNotificationsWithDiagnostics({ source: "debug panel" });
   },
 
   /** Local simulation: same API call as a WAKEUP_PING handler (no push payload). */
   async simulateWakeupViaRefresh(): Promise<void> {
-    append("WAKEUP_PING simulation started (local refresh API only)");
-    await this.triggerBackendRefresh();
+    logNotification("WAKEUP_PING simulation (local refresh API only)");
+    await refreshNotificationsWithDiagnostics({
+      source: "WAKEUP_PING simulation",
+    });
   },
 
   generateMockNotifications(
@@ -167,31 +126,26 @@ export const NotificationDebugService = {
   },
 
   async triggerMockRefresh(intervalMs?: number): Promise<void> {
-    append("Refresh requested (mock)");
+    logNotification("Mock refresh requested");
 
     const payload = this.generateMockNotifications(intervalMs);
     const timestamps = payload.nextNotifications?.map((n) => n.timestamp) ?? [];
-    append(`Mock payload generated (${timestamps.length} timestamps)`);
-    for (const ts of timestamps) {
-      if (typeof ts === "number") {
-        append(`Scheduling timestamp ${ts}`);
-      }
-    }
+    logNotification(`Mock payload generated (${timestamps.length} timestamps)`);
 
     if (!Capacitor.isNativePlatform()) {
-      append("Skipped: not running on native platform");
+      logNotification("Mock refresh skipped: not running on native platform");
       return;
     }
 
     await applyNotificationRefreshPayload(payload);
-    append("Mock refresh applied");
+    logNotification("Mock refresh applied");
   },
 
   async simulateWakeupPing(): Promise<void> {
-    append("Simulating WAKEUP_PING");
+    logNotification("Simulating WAKEUP_PING (production push handler)");
 
     if (!Capacitor.isNativePlatform()) {
-      append("Skipped: not running on native platform");
+      logNotification("WAKEUP_PING simulation skipped: not native platform");
       return;
     }
 
@@ -203,23 +157,22 @@ export const NotificationDebugService = {
     } as unknown as PushNotificationSchema;
 
     await handleCapacitorPushNotificationReceived(notification);
-    append("WAKEUP_PING handled (production handler)");
   },
 
   async runFloodTest(intervalMs?: number): Promise<void> {
-    append("Flood test started (20 sequential refreshes)");
+    logNotification("Flood test started (20 sequential refreshes)");
     for (let i = 0; i < 20; i++) {
-      append(`Flood iteration ${i + 1}/20`);
+      logNotification(`Flood iteration ${i + 1}/20`);
       await this.triggerMockRefresh(intervalMs);
     }
-    append("Flood test completed");
+    logNotification("Flood test completed");
   },
 
   async clearNotifications(): Promise<void> {
-    append("Clearing notifications");
+    logNotification("Clear notifications (debug panel)");
 
     if (!Capacitor.isNativePlatform()) {
-      append("Skipped: not running on native platform");
+      logNotification("Clear skipped: not running on native platform");
       return;
     }
 
@@ -229,29 +182,31 @@ export const NotificationDebugService = {
     };
 
     if (typeof plugin.clearAllNotifications === "function") {
+      logNotificationClearing("clearAllNotifications");
       await plugin.clearAllNotifications();
     } else if (typeof plugin.cancelAllNotifications === "function") {
+      logNotificationClearing("cancelAllNotifications");
       await plugin.cancelAllNotifications();
     } else {
-      append("Clear not available (plugin method missing)");
+      logNotification("Clear not available (plugin method missing)");
       return;
     }
 
-    append("Cleared notifications");
+    logNotification("Notifications cleared");
   },
 
   async getPendingNotifications(): Promise<PendingNotificationsResult> {
-    append("Fetching pending notifications");
+    logNotification("Fetching pending notifications");
 
     if (!Capacitor.isNativePlatform()) {
-      append("Skipped: not running on native platform");
+      logNotification("Pending fetch skipped: not running on native platform");
       return { pending: [] };
     }
 
     try {
       const res = await NotificationInspector.getPendingNotifications();
       const items = (res?.pending ?? []) as PendingNotificationInfo[];
-      append(`Pending fetched (${items.length})`);
+      logNotification(`Pending fetched (${items.length})`);
       return { pending: items };
     } catch (e: unknown) {
       if (isUnimplementedError(e)) {
@@ -261,7 +216,7 @@ export const NotificationDebugService = {
             "Pending notification inspection is currently supported on iOS only.",
         };
       }
-      append("Pending fetch failed");
+      logNotification("Pending fetch failed");
       logger.warn(`${LOG} getPendingNotifications failed`, e);
       return { pending: [] };
     }
diff --git a/src/services/notifications/NotificationService.ts b/src/services/notifications/NotificationService.ts
index 1d6fa2aa..5b6bde98 100644
--- a/src/services/notifications/NotificationService.ts
+++ b/src/services/notifications/NotificationService.ts
@@ -20,6 +20,11 @@ import {
   getNotificationApiBaseUrl,
   getTestMode,
 } from "./NotificationDebugConfig";
+import {
+  logTokenRegistrationFailure,
+  logTokenRegistrationStarted,
+  logTokenRegistrationSuccess,
+} from "./notificationLog";
 import { NativeNotificationService } from "./NativeNotificationService";
 import { WebPushNotificationService } from "./WebPushNotificationService";
 
@@ -27,24 +32,31 @@ import { WebPushNotificationService } from "./WebPushNotificationService";
  * Registers an FCM device token with the app backend (native Capacitor token or web getToken).
  */
 export async function registerToken(fcmToken: string): Promise<void> {
+  logTokenRegistrationStarted(fcmToken);
   const deviceId = await getOrCreateDeviceId();
   const baseUrl = getNotificationApiBaseUrl();
-  const res = await fetch(`${baseUrl}/notifications/register`, {
-    method: "POST",
-    headers: { "Content-Type": "application/json" },
-    body: JSON.stringify({
-      deviceId,
-      fcmToken,
-      platform: Capacitor.getPlatform(),
-      testMode: getTestMode(),
-    }),
-  });
-  if (!res.ok) {
-    logger.warn("[NotificationService] registerToken failed", {
-      status: res.status,
-      statusText: res.statusText,
+  try {
+    const res = await fetch(`${baseUrl}/notifications/register`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({
+        deviceId,
+        fcmToken,
+        platform: Capacitor.getPlatform(),
+        testMode: getTestMode(),
+      }),
     });
-    throw new Error(`registerToken failed: HTTP ${res.status}`);
+    if (!res.ok) {
+      logger.warn("[NotificationService] registerToken failed", {
+        status: res.status,
+        statusText: res.statusText,
+      });
+      throw new Error(`registerToken failed: HTTP ${res.status}`);
+    }
+    logTokenRegistrationSuccess(fcmToken);
+  } catch (err) {
+    logTokenRegistrationFailure(fcmToken, err);
+    throw err;
   }
 }
 
diff --git a/src/services/notifications/firebaseMessagingClient.ts b/src/services/notifications/firebaseMessagingClient.ts
index f3e6233f..0dda6047 100644
--- a/src/services/notifications/firebaseMessagingClient.ts
+++ b/src/services/notifications/firebaseMessagingClient.ts
@@ -23,6 +23,11 @@ import {
 import { logger } from "@/utils/logger";
 import { handleCapacitorPushNotificationReceived } from "./NativeNotificationService";
 import { registerToken } from "./NotificationService";
+import {
+  logPushNotificationActionPerformed,
+  logPushNotificationReceived,
+  logTokenRegistrationSkippedDuplicate,
+} from "./notificationLog";
 
 const LOG = "[FirebaseMessaging]";
 
@@ -43,6 +48,7 @@ async function registerRetrievedToken(
   }
   lastSeenFcmToken = trimmed;
   if (!options?.force && trimmed === lastRegisteredFcmToken) {
+    logTokenRegistrationSkippedDuplicate(trimmed);
     return;
   }
   await registerToken(trimmed);
@@ -246,6 +252,7 @@ async function initializeNativePushAndFirebaseMessagingImpl(): Promise<void> {
       "pushNotificationReceived",
       (notification) => {
         logger.debug(`${LOG} pushNotificationReceived`, notification);
+        logPushNotificationReceived(notification);
         void handleCapacitorPushNotificationReceived(notification).catch(
           (err) => {
             logger.warn(
@@ -261,6 +268,7 @@ async function initializeNativePushAndFirebaseMessagingImpl(): Promise<void> {
       "pushNotificationActionPerformed",
       (action) => {
         logger.debug(`${LOG} pushNotificationActionPerformed`, action);
+        logPushNotificationActionPerformed(action);
       },
     );
 
diff --git a/src/services/notifications/index.ts b/src/services/notifications/index.ts
index dd2176fa..43006e0c 100644
--- a/src/services/notifications/index.ts
+++ b/src/services/notifications/index.ts
@@ -21,6 +21,14 @@ export {
   setBackendBaseUrl,
   setTestMode,
 } from "./NotificationDebugConfig";
+export {
+  appendLog,
+  clearNotificationDebugLogs,
+  getNotificationDebugLogEntries,
+  logNotification,
+  NOTIFICATION_LOG_PREFIX,
+  subscribe,
+} from "./NotificationDebugEvents";
 export { NotificationService, registerToken } from "./NotificationService";
 export { NativeNotificationService } from "./NativeNotificationService";
 export { WebPushNotificationService } from "./WebPushNotificationService";
diff --git a/src/services/notifications/notificationLog.ts b/src/services/notifications/notificationLog.ts
new file mode 100644
index 00000000..99070743
--- /dev/null
+++ b/src/services/notifications/notificationLog.ts
@@ -0,0 +1,111 @@
+/**
+ * Shared observability helpers for notification flows (console + debug panel).
+ */
+
+import { logNotification } from "./NotificationDebugEvents";
+
+export function truncateFcmTokenForLog(token: string): string {
+  const t = token.trim();
+  if (t.length <= 24) {
+    return t;
+  }
+  return `${t.slice(0, 12)}…${t.slice(-8)}`;
+}
+
+export function logPushNotificationReceived(notification: {
+  title?: string;
+  data?: Record<string, unknown>;
+}): void {
+  const type =
+    typeof notification.data?.type === "string"
+      ? notification.data.type
+      : "(none)";
+  logNotification(`pushNotificationReceived type=${type}`, {
+    title: notification.title,
+    dataType: type,
+  });
+  if (type === "WAKEUP_PING") {
+    logNotification("WAKEUP_PING received — will trigger refresh");
+  }
+}
+
+export function logPushNotificationActionPerformed(action: {
+  actionId?: string;
+  notification?: { title?: string; data?: Record<string, unknown> };
+}): void {
+  const type =
+    typeof action.notification?.data?.type === "string"
+      ? action.notification.data.type
+      : "(none)";
+  logNotification(
+    `pushNotificationActionPerformed actionId=${action.actionId ?? "(none)"} type=${type}`,
+    {
+      actionId: action.actionId,
+      dataType: type,
+    },
+  );
+}
+
+export function logTokenRegistrationStarted(token: string): void {
+  logNotification("Token registration started", {
+    token: truncateFcmTokenForLog(token),
+  });
+}
+
+export function logTokenRegistrationSuccess(token: string): void {
+  logNotification("Token registration success", {
+    token: truncateFcmTokenForLog(token),
+  });
+}
+
+export function logTokenRegistrationSkippedDuplicate(token: string): void {
+  logNotification("Token registration skipped (duplicate token)", {
+    token: truncateFcmTokenForLog(token),
+  });
+}
+
+export function logTokenRegistrationFailure(
+  token: string,
+  error: unknown,
+): void {
+  const message = error instanceof Error ? error.message : String(error);
+  logNotification(`Token registration failure: ${message}`, {
+    token: truncateFcmTokenForLog(token),
+  });
+}
+
+export function logRefreshStarted(source?: string): void {
+  logNotification(source ? `Refresh started (${source})` : "Refresh started");
+}
+
+function elapsedMsSince(startedAt: number): number {
+  return performance.now() - startedAt;
+}
+
+export function logRefreshSuccess(
+  startedAt: number,
+  scheduledCount: number,
+): void {
+  logNotification(
+    `Refresh completed in ${Math.round(elapsedMsSince(startedAt))}ms (scheduled ${scheduledCount})`,
+  );
+}
+
+export function logRefreshFailure(
+  startedAt: number,
+  errorMessage: string,
+  status?: number,
+): void {
+  const statusPart = status != null ? ` HTTP ${status}` : "";
+  logNotification(
+    `Refresh failed in ${Math.round(elapsedMsSince(startedAt))}ms: ${errorMessage}${statusPart}`,
+  );
+}
+
+export function logNotificationClearing(method: string): void {
+  logNotification(`Clearing notifications via ${method}`);
+}
+
+export function logScheduleReplacement(count: number): void {
+  logNotification(`Schedule replacement: ${count} notification(s)`);
+}