feat: add light website intro motion

website/app/page.tsx

@@ -139,6 +139,38 @@ const controlSignals = [
   "工作空间归档",
 ];
 
+const bootLines = [
+  "初始化统一模型网关",
+  "加载 Claude Messages 与 OpenAI 兼容入口",
+  "同步 Comfy Cloud / RunningHub 工作流后端",
+  "准备日志、计费和工作空间归档",
+];
+
+function BootScreen() {
+  return (
+    <div className="boot-screen" aria-hidden="true">
+      <div className="boot-frame">
+        <div className="boot-brand">
+          <span className="boot-mark" />
+          <strong>BossAI</strong>
+        </div>
+        <div className="boot-rule" />
+        <div className="boot-lines">
+          {bootLines.map((line) => (
+            <p key={line}>
+              <span />
+              {line}
+            </p>
+          ))}
+        </div>
+        <div className="boot-progress">
+          <span />
+        </div>
+      </div>
+    </div>
+  );
+}
+
 function FlowGlyph() {
   return (
     <svg className="flow-glyph" viewBox="0 0 520 360" aria-hidden="true">
@@ -233,6 +265,7 @@ export default function Home() {
   return (
     <BossAiMotion>
       <main className="site-shell">
+        <BootScreen />
         <div className="site-noise" aria-hidden="true" />
         <header className="site-nav" data-motion="nav">
           <Link className="brand-mark" href="/" aria-label="BossAI 首页">