From 74196396c5b15dacfb98a4c3e69d40bebd7837bf Mon Sep 17 00:00:00 2001
From: gahusb <bgg8988@gmail.com>
Date: Tue, 19 May 2026 03:14:41 +0900
Subject: [PATCH] fix(music-lab): track guard `if payload.track is not None:`
 (T1 follow-up)

Code review found: empty dict `{}` was falsy and would silently skip
add_track. Use explicit None check.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---
 music-lab/app/internal_router.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/music-lab/app/internal_router.py b/music-lab/app/internal_router.py
index 6bddfe1..8e479c2 100644
--- a/music-lab/app/internal_router.py
+++ b/music-lab/app/internal_router.py
@@ -48,7 +48,7 @@ def music_update(payload: UpdatePayload):
         error=payload.error,
     )
 
-    if payload.track:
+    if payload.track is not None:
         try:
             db.add_track(payload.track)
         except Exception: