better fps testing ui + more info + comment + users minor update

src/app/layout.tsx

@@ -45,6 +45,15 @@ export default function RootLayout({ children }: { children: React.ReactNode })
 
       addToast({ title: `电源计划已切换 → ${PowerPlans[current].title}` })
     })
+
+    void listen<number>("tray://set_launch_index", async (event) => {
+      const index = event.payload
+      if (typeof index === "number" && index >= 0 && index < toolStore.state.launchOptions.length) {
+        tool.setLaunchIndex(index)
+        const optionName = toolStore.state.launchOptions[index].name || `启动项 ${index + 1}`
+        addToast({ title: `启动项已切换 → ${optionName}` })
+      }
+    })
   }, [])
 
   // 检测steam路径和游戏路径是否有效