fix: restore linux modal shortcuts

src/main/runtime/composers/ipc-runtime-composer.test.ts

@@ -10,6 +10,7 @@ test('composeIpcRuntimeHandlers returns callable IPC handlers and registration b
     mpvCommandMainDeps: {
       triggerSubsyncFromConfig: async () => {},
       openRuntimeOptionsPalette: () => {},
+      openJimaku: () => {},
       openYoutubeTrackPicker: () => {},
       openPlaylistBrowser: () => {},
       cycleRuntimeOption: () => ({ ok: true }),