diff --git a/src/frontend/src/components/TaskModal.tsx b/src/frontend/src/components/TaskModal.tsx
index 44109af..cfcae3b 100644
--- a/src/frontend/src/components/TaskModal.tsx
+++ b/src/frontend/src/components/TaskModal.tsx
@@ -207,7 +207,7 @@ function SubtaskPanel({ taskId, stagesJson }: { taskId: string; stagesJson?: str
                 padding: '6px 10px', background: 'var(--panel2)', borderRadius: 6,
                 fontSize: 12,
               }}>
-                <span style={{ fontSize: 9, padding: '1px 5px', borderRadius: 3, border: `1px solid ${ssm.color}44`, color: ssm.color, background: ssm.bg }}>{ssm.label}</span>
+                <span style={{ fontSize: 9, padding: '1px 5px', borderRadius: 3, border: `1px solid ${ssm.color}44`, color: ssm.color, background: (ssm as any).bg || '#141824' }}>{ssm.label}</span>
                 <span style={{ flex: 1, color: '#dde4f8', overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>{st.title}</span>
                 {st.stage && <span style={{ fontSize: 10, color: '#f59e0b' }}>{st.stage}</span>}
                 {emoji && <span style={{ fontSize: 11 }}>{emoji}</span>}
diff --git a/src/frontend/tsconfig.tsbuildinfo b/src/frontend/tsconfig.tsbuildinfo
index 4e79798..cc8c2c2 100644
--- a/src/frontend/tsconfig.tsbuildinfo
+++ b/src/frontend/tsconfig.tsbuildinfo
@@ -1 +1 @@
-{"root":["./src/app.tsx","./src/api.ts","./src/main.tsx","./src/store.ts","./src/time.ts","./src/vite-env.d.ts","./src/components/artifactlist.tsx","./src/components/artifactpanel.tsx","./src/components/checkpointpanel.tsx","./src/components/confirmdialog.tsx","./src/components/courtceremony.tsx","./src/components/courtdiscussion.tsx","./src/components/edictboard.tsx","./src/components/globalsearch.tsx","./src/components/memorialpanel.tsx","./src/components/modelconfig.tsx","./src/components/monitorpanel.tsx","./src/components/morningpanel.tsx","./src/components/notificationcenter.tsx","./src/components/officialpanel.tsx","./src/components/sessionspanel.tsx","./src/components/settingspanel.tsx","./src/components/skillsconfig.tsx","./src/components/taskmodal.tsx","./src/components/templatepanel.tsx","./src/components/toaster.tsx","./src/components/usagepanel.tsx"],"version":"5.9.3"}
\ No newline at end of file
+{"root":["./src/app.tsx","./src/api.ts","./src/main.tsx","./src/store.ts","./src/time.ts","./src/vite-env.d.ts","./src/components/artifactlist.tsx","./src/components/artifactpanel.tsx","./src/components/checkpointpanel.tsx","./src/components/confirmdialog.tsx","./src/components/courtceremony.tsx","./src/components/courtdiscussion.tsx","./src/components/edictboard.tsx","./src/components/globalsearch.tsx","./src/components/memorialpanel.tsx","./src/components/modelconfig.tsx","./src/components/monitorpanel.tsx","./src/components/morningpanel.tsx","./src/components/notificationcenter.tsx","./src/components/officialpanel.tsx","./src/components/sessionspanel.tsx","./src/components/settingspanel.tsx","./src/components/skillsconfig.tsx","./src/components/taskmodal.tsx","./src/components/templatepanel.tsx","./src/components/toaster.tsx","./src/components/usagepanel.tsx"],"errors":true,"version":"5.9.3"}
\ No newline at end of file