feat(web-ui): CompileTab '영상 만들기' 버튼 + createPipeline payload 시그니처

src/pages/music/components/YoutubeTab.jsx

@@ -49,7 +49,12 @@ export default function YoutubeTab({ library, initialTrackId, onClearInitialTrac
                     onClearInitialTrack={onClearInitialTrack}
                 />
             )}
-            {subtab === 'compile' && <CompileTab library={library} />}
+            {subtab === 'compile' && (
+                <CompileTab
+                    library={library}
+                    onSwitchToPipeline={() => setSubtab('pipeline')}
+                />
+            )}
             {subtab === 'trends' && <TrendsTab />}
             {subtab === 'revenue' && <RevenueTab />}
             {subtab === 'setup' && <SetupTab />}