chore: remove luckysheet integration

src/components/bottom-toolbar.tsx

@@ -0,0 +1,36 @@
+"use client";
+
+import { MessageCircle, Sparkles, Wand2 } from "lucide-react";
+import { useBackendHealth } from "@/hooks/use-backend-health";
+import { cn } from "@/lib/utils";
+
+export function BottomToolbar() {
+  const status = useBackendHealth();
+  const indicatorColor =
+    status === "ok" ? "bg-green-500" : status === "error" ? "bg-red-500" : "bg-gray-300";
+
+  return (
+    <footer className="flex h-12 items-center justify-between border-t border-[#eeeeee] px-6 text-sm">
+      <div className="flex items-center gap-2 text-xs text-gray-500">
+        <span className={cn("h-2 w-2 rounded-full", indicatorColor)} />
+        后端连接：{status === "ok" ? "正常" : status === "error" ? "异常" : "检测中"}
+      </div>
+      <div className="flex items-center gap-3 text-gray-600">
+        <button type="button" className="wolai-hover rounded-full px-3 py-1">
+          <MessageCircle className="mr-1 inline h-4 w-4" />
+          发送
+        </button>
+        <button type="button" className="wolai-hover rounded-full px-3 py-1">
+          <Wand2 className="mr-1 inline h-4 w-4" />
+          魔力
+        </button>
+        <button
+          type="button"
+          className="flex h-8 w-8 items-center justify-center rounded-full bg-[#2563eb] text-white shadow-sm"
+        >
+          <Sparkles className="h-4 w-4" />
+        </button>
+      </div>
+    </footer>
+  );
+}