From cc979f7e121054644ee69101da37fd8745570bb1 Mon Sep 17 00:00:00 2001
From: Reinhold <310554180+reinhold-ph@users.noreply.github.com>
Date: Sun, 2 Aug 2026 20:09:26 +0000
Subject: [PATCH] test(buzz): preserve explicit progress thread

---
 tests/gateway/test_buzz_progress_thread_routing.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/tests/gateway/test_buzz_progress_thread_routing.py b/tests/gateway/test_buzz_progress_thread_routing.py
index c36dad7bc9..c54b804eda 100644
--- a/tests/gateway/test_buzz_progress_thread_routing.py
+++ b/tests/gateway/test_buzz_progress_thread_routing.py
@@ -13,3 +13,14 @@ def test_buzz_progress_without_source_thread_uses_triggering_event():
         )
         == "buzz-event-123"
     )
+
+
+def test_buzz_progress_preserves_explicit_source_thread():
+    assert (
+        _resolve_progress_thread_id(
+            "buzz",
+            source_thread_id="explicit-thread-root",
+            event_message_id="buzz-event-123",
+        )
+        == "explicit-thread-root"
+    )