diff --git a/packages/cli/src/ui/hooks/useGeminiStream.ts b/packages/cli/src/ui/hooks/useGeminiStream.ts
index abff9283b..43ea32213 100644
--- a/packages/cli/src/ui/hooks/useGeminiStream.ts
+++ b/packages/cli/src/ui/hooks/useGeminiStream.ts
@@ -1178,6 +1178,7 @@ export const useGeminiStream = (
       query: PartListUnion,
       submitType: SendMessageType = SendMessageType.UserQuery,
       prompt_id?: string,
+      metadata?: { notificationDisplayText?: string },
     ) => {
       const allowConcurrentBtwDuringResponse =
         submitType === SendMessageType.UserQuery &&
@@ -1314,7 +1315,10 @@ export const useGeminiStream = (
             finalQueryToSend,
             abortSignal,
             prompt_id!,
-            { type: submitType },
+            {
+              type: submitType,
+              notificationDisplayText: metadata?.notificationDisplayText,
+            },
           );
 
           const processingStatus = await processGeminiStreamEvents(
@@ -1816,7 +1820,9 @@ export const useGeminiStream = (
         { type: 'notification' as const, text: item.displayText },
         Date.now(),
       );
-      submitQuery(item.modelText, SendMessageType.Notification);
+      submitQuery(item.modelText, SendMessageType.Notification, undefined, {
+        notificationDisplayText: item.displayText,
+      });
     }
   }, [streamingState, submitQuery, notificationTrigger, addItem]);
 
diff --git a/packages/cli/src/ui/utils/resumeHistoryUtils.ts b/packages/cli/src/ui/utils/resumeHistoryUtils.ts
index aa30a0489..f8ee52017 100644
--- a/packages/cli/src/ui/utils/resumeHistoryUtils.ts
+++ b/packages/cli/src/ui/utils/resumeHistoryUtils.ts
@@ -256,6 +256,18 @@ function convertToHistoryItems(
     }
     switch (record.type) {
       case 'user': {
+        // Restore notification items (background agent completions)
+        if (record.subtype === 'notification') {
+          const payload = record.systemPayload as
+            | { displayText?: string }
+            | undefined;
+          const text =
+            payload?.displayText ||
+            extractTextFromParts(record.message?.parts as Part[]) ||
+            'Background agent completed';
+          items.push({ type: 'notification', text });
+          break;
+        }
         if (pendingAtCommands.length > 0) {
           // Flush any pending tool group before user message
           if (currentToolGroup.length > 0) {
diff --git a/packages/core/src/core/client.ts b/packages/core/src/core/client.ts
index 63a1a62df..14e5b38f5 100644
--- a/packages/core/src/core/client.ts
+++ b/packages/core/src/core/client.ts
@@ -111,6 +111,8 @@ export interface SendMessageOptions {
     iterationCount: number;
     reasons: string[];
   };
+  /** Display text for notification messages (persisted for session resume). */
+  notificationDisplayText?: string;
 }
 
 export class GeminiClient {
@@ -551,6 +553,12 @@ export class GeminiClient {
       }
     }
 
+    if (messageType === SendMessageType.Notification) {
+      this.config
+        .getChatRecordingService()
+        ?.recordNotification(request, options?.notificationDisplayText);
+    }
+
     if (
       messageType === SendMessageType.UserQuery ||
       messageType === SendMessageType.Cron
diff --git a/packages/core/src/services/chatRecordingService.ts b/packages/core/src/services/chatRecordingService.ts
index 0e021fa4c..c81541c03 100644
--- a/packages/core/src/services/chatRecordingService.ts
+++ b/packages/core/src/services/chatRecordingService.ts
@@ -57,7 +57,8 @@ export interface ChatRecord {
     | 'chat_compression'
     | 'slash_command'
     | 'ui_telemetry'
-    | 'at_command';
+    | 'at_command'
+    | 'notification';
   /** Working directory at time of message */
   cwd: string;
   /** CLI version for compatibility tracking */
@@ -97,7 +98,12 @@ export interface ChatRecord {
     | ChatCompressionRecordPayload
     | SlashCommandRecordPayload
     | UiTelemetryRecordPayload
-    | AtCommandRecordPayload;
+    | AtCommandRecordPayload
+    | NotificationRecordPayload;
+}
+
+export interface NotificationRecordPayload {
+  displayText: string;
 }
 
 /**
@@ -294,6 +300,27 @@ export class ChatRecordingService {
     }
   }
 
+  /**
+   * Records a background agent notification.
+   * Stored as a user-role message (so the API history includes it on resume)
+   * with subtype 'notification' (so the UI can restore it as an info item).
+   */
+  recordNotification(message: PartListUnion, displayText?: string): void {
+    try {
+      const record: ChatRecord = {
+        ...this.createBaseRecord('user'),
+        subtype: 'notification',
+        message: createUserContent(message),
+        systemPayload: displayText
+          ? ({ displayText } as NotificationRecordPayload)
+          : undefined,
+      };
+      this.appendRecord(record);
+    } catch (error) {
+      debugLogger.error('Error saving notification:', error);
+    }
+  }
+
   /**
    * Records an assistant turn with all available data.
    * Writes immediately to disk.