diff --git a/server/index.ts b/server/index.ts
index 15f278122..459ec7177 100644
--- a/server/index.ts
+++ b/server/index.ts
@@ -983,7 +983,9 @@ bus.subscribe((event: RuntimeEvent) => {
         if (store.bot(bot.id)?.activity !== "dead") store.setActivity(bot.id, "idle");
         store.patchBot(bot.id, { unread: true });
         if (routineRun?.status !== "failed") {
-          notify(buildNotification("done", bot, event.threadId, reply));
+          // the frame carries the bot's avatar so every desktop client can
+          // show the notification under that bot's own face
+          notify(buildNotification("done", bot, event.threadId, reply, { avatarUrl: bot.avatarUrl }));
         }
         if (screenPollers.has(bot.id)) {
           // the last live frame becomes a settled inline screen message —
diff --git a/server/notify.test.ts b/server/notify.test.ts
index 69ef7e9a0..002aa7a81 100644
--- a/server/notify.test.ts
+++ b/server/notify.test.ts
@@ -42,6 +42,15 @@ describe("buildNotification", () => {
     // that conversation, not whatever the bot happens to be showing
     expect(buildNotification("done", bot, "other-thread", "done")?.threadId).toBe("other-thread");
   });
+
+  it("carries the bot's avatar when one is given", () => {
+    const avatarUrl = "/api/attachments/123e4567-e89b-12d3-a456-426614174000.webp";
+    const frame = buildNotification("done", bot, "thread-1", "pushed the branch", { avatarUrl });
+    expect(frame).toMatchObject({ botId: "bot-1", body: "pushed the branch", avatarUrl });
+
+    // no profile image → the frame stays exactly as before
+    expect(buildNotification("done", bot, "thread-1", "pushed")?.avatarUrl).toBeUndefined();
+  });
 });
 
 describe("summarize", () => {
diff --git a/server/notify.ts b/server/notify.ts
index cebea1e82..21b312e53 100644
--- a/server/notify.ts
+++ b/server/notify.ts
@@ -19,6 +19,9 @@ export interface Notification {
   threadId: string;
   title: string;
   body: string;
+  /** The bot's stored profile image, when it has one; clients show it as
+   * the OS notification's icon so every banner carries its bot's face. */
+  avatarUrl?: string;
 }
 
 /** One line, short enough for a lock screen, with the newlines and code
@@ -44,6 +47,7 @@ export function buildNotification(
   bot: NotifyBot,
   threadId: string,
   detail: string,
+  extra?: { avatarUrl?: string },
 ): Notification | null {
   // The toggle means what it says: off is off, including for approvals.
   // A bot whose notifications you turned off can still block waiting for
@@ -66,5 +70,5 @@ export function buildNotification(
   // badge in the sidebar already carries that much.
   if (kind === "done" && !body) return null;
 
-  return { kind, botId: bot.id, botName: bot.name, threadId, title, body };
+  return { kind, botId: bot.id, botName: bot.name, threadId, title, body, ...extra };
 }
diff --git a/src/lib/notify.test.ts b/src/lib/notify.test.ts
index 9471074ee..e75d3f76a 100644
--- a/src/lib/notify.test.ts
+++ b/src/lib/notify.test.ts
@@ -1,6 +1,11 @@
 import { afterEach, describe, expect, it, vi } from "vitest";
 
-import { requestNotificationPermission, showNotification, type NotifyFrame } from "./notify";
+import {
+  buildNotificationOptions,
+  requestNotificationPermission,
+  showNotification,
+  type NotifyFrame,
+} from "./notify";
 
 const frame: NotifyFrame = {
   kind: "done",
@@ -48,7 +53,7 @@ describe("desktop notifications", () => {
     const { notices } = installNotification("granted");
     showNotification(frame, vi.fn());
     expect(notices).toHaveLength(1);
-    expect(notices[0]).toMatchObject({ title: frame.title, options: { body: frame.body, tag: frame.threadId } });
+    expect(notices[0]).toMatchObject({ title: frame.title, options: { body: frame.body, tag: `openmausbot:${frame.botId}` } });
   });
 
   it("opens the exact detached task carried by the notification", () => {
@@ -65,4 +70,41 @@ describe("desktop notifications", () => {
       threadId: "detached-routine-thread",
     });
   });
+
+  it("groups under the bot, not the thread", () => {
+    const { notices } = installNotification("granted");
+
+    showNotification(frame, vi.fn());
+    showNotification(
+      { ...frame, threadId: "thread-2", body: "Second task done" },
+      vi.fn(),
+    );
+
+    // one bot across two threads shares a tag, so the platform replaces
+    // rather than stacks; another bot gets its own key
+    expect(notices[0]?.options?.tag).toBe(`openmausbot:${frame.botId}`);
+    expect(notices[1]?.options?.tag).toBe(`openmausbot:${frame.botId}`);
+    showNotification({ ...frame, botId: "bot-2" }, vi.fn());
+    expect(notices[2]?.options?.tag).toBe(`openmausbot:bot-2`);
+  });
+
+  it("carries the bot's avatar when its profile has one", () => {
+    const { notices } = installNotification("granted");
+    const avatarUrl = "/api/attachments/123e4567-e89b-12d3-a456-426614174000.png";
+
+    showNotification(frame, vi.fn(), avatarUrl);
+    expect(notices[0]?.options?.icon).toBe(avatarUrl);
+
+    showNotification(frame, vi.fn(), null);
+    expect(notices[1]?.options?.icon).toBeUndefined();
+  });
+});
+
+describe("buildNotificationOptions", () => {
+  it("keys coalescing on botId and omits a missing avatar", () => {
+    expect(buildNotificationOptions({ id: "bot-9" })).toEqual({
+      tag: "openmausbot:bot-9",
+      icon: undefined,
+    });
+  });
 });
diff --git a/src/lib/notify.ts b/src/lib/notify.ts
index d0c8858d2..6357a950e 100644
--- a/src/lib/notify.ts
+++ b/src/lib/notify.ts
@@ -14,10 +14,29 @@ export function requestNotificationPermission(): Promise<NotificationPermission>
   return Notification.requestPermission();
 }
 
+/** The identity a notification groups under: one bot, wherever it was
+ * working. Keyed by bot rather than thread so a single bot running across
+ * tasks and rooms coalesces into one stack instead of stacking banners. */
+export interface NotificationBotIdentity {
+  id: string;
+  avatarUrl?: string | null;
+}
+
+/** Presentation options for one bot's notifications: the stable per-bot
+ * coalescing key platforms replace on (`tag`) and its avatar, when the
+ * profile has one. Pure so the grouping rule stays testable on its own. */
+export function buildNotificationOptions(bot: NotificationBotIdentity): NotificationOptions {
+  return { tag: `openmausbot:${bot.id}`, icon: bot.avatarUrl ?? undefined };
+}
+
 /** Show one, unless the app is already in front of the user — a banner over
  * the window you are looking at is noise, and the chat itself already shows
  * the card. */
-export function showNotification(frame: NotifyFrame, onOpen: (target: NotificationTarget) => void) {
+export function showNotification(
+  frame: NotifyFrame,
+  onOpen: (target: NotificationTarget) => void,
+  avatarUrl?: string | null,
+) {
   if (typeof Notification === "undefined") return;
   if (document.hasFocus()) return;
 
@@ -27,6 +46,10 @@ export function showNotification(frame: NotifyFrame, onOpen: (target: Notificati
   };
 
   if (Notification.permission === "granted") {
-    new Notification(frame.title, { body: frame.body, tag: frame.threadId }).onclick = open;
+    const options: NotificationOptions = {
+      body: frame.body,
+      ...buildNotificationOptions({ id: frame.botId, avatarUrl }),
+    };
+    new Notification(frame.title, options).onclick = open;
   }
 }
diff --git a/src/state/store.tsx b/src/state/store.tsx
index 812d1fd0f..a7f46d067 100644
--- a/src/state/store.tsx
+++ b/src/state/store.tsx
@@ -1462,7 +1462,11 @@ export function StoreProvider({ children }: { children: ReactNode }) {
           // unread:false back. Opening a bot from its own notification and
           // watching the badge return on the next hydration is exactly the
           // bug that makes notifications feel broken.
-          showNotification(frame.notification, (target) => openNotificationTarget(dispatch, target, stateRef.current));
+          showNotification(
+            frame.notification,
+            (target) => openNotificationTarget(dispatch, target, stateRef.current),
+            stateRef.current.bots.find((bot) => bot.id === frame.notification.botId)?.avatarUrl,
+          );
           break;
         case "group.deleted":
           rawDispatch({ type: "groupDeleted", groupId: frame.groupId });