Fix slow commit bug

sync-server/src/app_state/database.rs

@@ -793,23 +793,18 @@ impl Database {
             .await
             .context("Failed to commit transaction")?;
 
-        // For non-delete writes the originating device already has
-        // authoritative state from its HTTP response, so we tag the
-        // broadcast with `origin_device_id` and the send task in
-        // `websocket.rs` filters it out for that device. Deletes are
-        // delivered to *every* connected client including the author —
-        // the originator only removes the document from its sync queue
-        // once it receives this receipt.
+        // Broadcast every commit to every connected client, including
+        // the originator. The HTTP response is the originator's normal
+        // path to learn its own update, but if the response is lost
+        // (sync reset, dropped TCP) the broadcast is the only remaining
+        // delivery channel — and the client-side `parentVersionId`
+        // dedup absorbs the redundant message when the response made it
+        // through.
         let envelope = WebSocketServerMessage::VaultUpdate(WebSocketVaultUpdate {
             document: version.clone().into(),
         });
-        let with_origin = if version.is_deleted {
-            WebSocketServerMessageWithOrigin::new(envelope)
-        } else {
-            WebSocketServerMessageWithOrigin::with_origin(version.device_id.clone(), envelope)
-        };
         self.broadcasts
-            .send_document_update(vault_id, with_origin)?;
+            .send_document_update(vault_id, WebSocketServerMessageWithOrigin::new(envelope))?;
 
         Ok(())
     }