Merge remote-tracking branch 'origin/main'

# Conflicts:
#	app/androidApp/src/main/kotlin/com/example/aiapp/Sizes.kt

server/src/routes.rs

@@ -1798,9 +1798,20 @@ async fn stream_session(
 /// and local; revisit if daily use produces transcripts where this shows
 /// (phase 6 territory).
 async fn send_backlog(transcript: &Path, last: &mut u64, tx: &mpsc::Sender<SseEvent>) -> bool {
+    let cursor = *last;
     let entries = match catch_up(transcript, *last, CATCH_UP_LIMIT) {
-        Ok(CatchUp::Continue(entries)) => entries,
+        Ok(CatchUp::Continue(entries)) => {
+            // The pair of them at debug, because "was this subscriber reset,
+            // and how far behind was it" is a question about a phone that
+            // nothing else here can answer -- the app sees a window arrive
+            // and cannot tell how far it had fallen, and a reset is the one
+            // thing that makes its screen jump. `RUST_LOG=ai_server=debug`,
+            // beside the transcript pages.
+            tracing::debug!(cursor, sent = entries.len(), "stream backlog: continue");
+            entries
+        }
         Ok(CatchUp::Restart(entries)) => {
+            tracing::debug!(cursor, sent = entries.len(), "stream backlog: reset");
             if tx.send(SseEvent::default().event("reset")).await.is_err() {
                 return false;
             }