fix: omit queue_item_ids from renderer state reports to fix seekbar sync

The server rejects renderer state reports with "Current track not found
in queue nor autoplay" after QBZ-initiated queue loads, because it assigns
non-standard queue_item_ids (first track = track_id, rest = 1..N).

Omit current_queue_item_id and next_queue_item_id from all outbound
renderer reports. The server already knows the current track from
SET_STATE commands and adds the correct queue_item_id when forwarding
to controllers.

Also add info-level diagnostic logging to both report paths (periodic
frontend reports and command-response reports) and the protobuf encoder
for verifying wire content.

crates/qconnect-app/Cargo.toml

@@ -15,6 +15,7 @@ serde = { workspace = true }
 serde_json = { workspace = true }
 thiserror = { workspace = true }
 uuid = { version = "1", features = ["v4"] }
+log = { workspace = true }
 
 [dev-dependencies]
 tokio = { workspace = true, features = ["test-util"] }

crates/qconnect-app/src/app.rs

@@ -416,10 +416,25 @@ where
     ) -> Result<(), QconnectAppError> {
         match command {
             RendererCommand::SetState { .. } => {
+                log::info!(
+                    "[QConnect/Report] SetState report: playing={:?} pos={:?} track={:?} next={:?} qv={}.{}",
+                    renderer.playing_state,
+                    renderer.current_position_ms,
+                    renderer.current_track.as_ref().map(|t| (t.track_id, t.queue_item_id)),
+                    renderer.next_track.as_ref().map(|t| (t.track_id, t.queue_item_id)),
+                    queue_version_ref.major,
+                    queue_version_ref.minor
+                );
                 let report = RendererReport::new(
                     RendererReportType::RndrSrvrStateUpdated,
                     self.next_action_uuid(),
                     queue_version_ref,
+                    // NOTE: We intentionally OMIT current_queue_item_id and next_queue_item_id.
+                    // The server validates these IDs against its queue state and rejects reports
+                    // when IDs don't match ("Current track not found in queue nor autoplay").
+                    // This happens after QBZ-initiated queue loads where the server assigns
+                    // non-standard queue_item_ids (first track = track_id, rest = 1..N).
+                    // The server already knows the current track from SET_STATE commands.
                     serde_json::json!({
                         "playing_state": renderer.playing_state,
                         "buffer_state": infer_buffer_state(renderer.playing_state),
@@ -429,8 +444,8 @@ where
                             "major": queue_version_ref.major,
                             "minor": queue_version_ref.minor
                         },
-                        "current_queue_item_id": renderer.current_track.as_ref().map(|item| item.queue_item_id),
-                        "next_queue_item_id": renderer.next_track.as_ref().map(|item| item.queue_item_id)
+                        "current_queue_item_id": Option::<i32>::None,
+                        "next_queue_item_id": Option::<i32>::None
                     }),
                 );
                 self.send_renderer_report(report).await?;

crates/qconnect-protocol/src/mapper.rs

@@ -424,25 +424,32 @@ fn map_renderer_report(report: &RendererReport) -> Result<QConnectMessage, Proto
                 .unwrap_or(report.queue_version_ref);
             let current_position = optional_i32(&report.payload, "current_position")?;
             let duration = optional_i32(&report.payload, "duration")?;
+            let current_qid = optional_i32(&report.payload, "current_queue_item_id")?;
+            let next_qid = optional_i32(&report.payload, "next_queue_item_id")?;
+            let playing_state = optional_i32(&report.payload, "playing_state")?;
             let playback_position = current_position.map(|value| PlaybackPositionMessage {
                 timestamp: Some(now_ms()),
                 value: Some(value),
             });
 
+            log::info!(
+                "[QConnect/Proto] Encoding StateUpdated: playing={:?} pos={:?} dur={:?} qid={:?} next_qid={:?} qv={}.{}",
+                playing_state, current_position, duration,
+                current_qid, next_qid,
+                queue_version.major, queue_version.minor
+            );
+
             Ok(QConnectMessage {
                 message_type: Some(QConnectMessageType::MessageTypeRndrSrvrStateUpdated as i32),
                 rndr_srvr_state_updated: Some(RendererStateUpdatedMessage {
                     state: Some(RendererStateMessage {
-                        playing_state: optional_i32(&report.payload, "playing_state")?,
+                        playing_state,
                         buffer_state: optional_i32(&report.payload, "buffer_state")?,
                         current_position: playback_position,
                         duration,
                         queue_version: Some(to_proto_queue_version(queue_version)?),
-                        current_queue_item_id: optional_i32(
-                            &report.payload,
-                            "current_queue_item_id",
-                        )?,
-                        next_queue_item_id: optional_i32(&report.payload, "next_queue_item_id")?,
+                        current_queue_item_id: current_qid,
+                        next_queue_item_id: next_qid,
                     }),
                 }),
                 ..Default::default()

src-tauri/src/qconnect_service.rs

@@ -1723,6 +1723,21 @@ pub async fn v2_qconnect_report_playback_state(
     }
 
     let queue_version = service.get_queue_version().await;
+
+    log::info!(
+        "[QConnect/Report] Periodic state report: playing={} pos={:?} dur={:?} qid={:?} next_qid={:?} track_id={:?} qv={}.{}",
+        playing_state, current_position, duration,
+        resolved_current_qid, resolved_next_qid, current_track_id,
+        queue_version.major, queue_version.minor
+    );
+
+    // NOTE: We intentionally OMIT current_queue_item_id and next_queue_item_id
+    // from periodic state reports. The server validates these IDs against its
+    // queue state and rejects reports when IDs don't match (returns "Current track
+    // not found in queue nor autoplay"). This happens consistently after QBZ-initiated
+    // queue loads where the server assigns non-standard queue_item_ids.
+    // The server already knows the current track from SET_STATE commands and adds
+    // the correct queue_item_id when forwarding to controllers.
     let report = RendererReport::new(
         RendererReportType::RndrSrvrStateUpdated,
         Uuid::new_v4().to_string(),
@@ -1732,8 +1747,8 @@ pub async fn v2_qconnect_report_playback_state(
             "buffer_state": BUFFER_STATE_OK,
             "current_position": current_position,
             "duration": duration,
-            "current_queue_item_id": resolved_current_qid,
-            "next_queue_item_id": resolved_next_qid,
+            "current_queue_item_id": null,
+            "next_queue_item_id": null,
             "queue_version": {
                 "major": queue_version.major,
                 "minor": queue_version.minor