Keep stacked notification images and warn when OEM AUTO_START blocks UnifiedPush.

Attach image thumbnails via MessagingStyle message data so they survive multi-message history, drop useless image filenames, and surface TCL App Boot blocks in settings.

overlay/src/app/features/settings/notifications/SystemNotification.tsx

@@ -172,6 +172,7 @@ type PushStatus = {
   endpoint: string;
   distributors: string[];
   lastFailure: string;
+  autoStartBlocked: boolean;
 };
 
 /** Android-only section showing UnifiedPush registration status and controls. */
@@ -196,6 +197,7 @@ function AndroidPushNotifications() {
             endpoint: s.endpoint || '',
             distributors,
             lastFailure: s.lastFailure || '',
+            autoStartBlocked: Boolean(s.autoStartBlocked),
           }
         : undefined
     );
@@ -246,6 +248,13 @@ function AndroidPushNotifications() {
         </Text>
       );
     }
+    if (status.lastFailure === 'AUTO_START_BLOCKED' || status.autoStartBlocked) {
+      return (
+        <Text as="span" style={{ color: color.Critical.Main }} size="T200">
+          Phone is blocking auto-start for Paarrot. Open App Boot / Auto-start settings, allow Paarrot (and ntfy), then tap Reset.
+        </Text>
+      );
+    }
     if (status.lastFailure) {
       return (
         <Text as="span" style={{ color: color.Critical.Main }} size="T200">

overlay/src/app/pages/client/ClientNonUIFeatures.tsx

@@ -121,7 +121,8 @@ function notificationBodyFromEvent(mEvent: MatrixEvent): string | undefined {
   const rawBody = typeof content.body === 'string' ? content.body : undefined;
   switch (content.msgtype) {
     case 'm.image':
-      return rawBody ? `📷 ${rawBody}` : '📷 Photo';
+      // Matrix body is usually a filename — skip it in the shade.
+      return '📷 Photo';
     case 'm.video':
       return rawBody ? `🎥 ${rawBody}` : '🎥 Video';
     case 'm.audio':
@@ -129,7 +130,7 @@ function notificationBodyFromEvent(mEvent: MatrixEvent): string | undefined {
     case 'm.file':
       return rawBody ? `📎 ${rawBody}` : '📎 File';
     case 'm.sticker':
-      return rawBody ? `🖼️ ${rawBody}` : '🖼️ Sticker';
+      return '🖼️ Sticker';
     default:
       return rawBody;
   }

overlay/src/app/utils/backgroundSync.ts

@@ -9,6 +9,8 @@ type UnifiedPushStatus = {
   distributor: string;
   distributors: string[] | string;
   lastFailure?: string;
+  /** OEM App Boot / AUTO_START is blocking distributor broadcasts (e.g. TCL). */
+  autoStartBlocked?: boolean;
 };
 
 type ClearRoomNotificationsResult = {