feat: use main navbar for canvas page

app/canvas/[id]/layout.tsx

@@ -1,4 +1,9 @@
 import { Metadata } from "next";
+import { Suspense } from "react";
+import { cookies } from "next/headers";
+import { auth } from "@/app/(auth)/auth";
+import { TopNavbar } from "@/components/top-navbar";
+import { getSiteSettings, getNavLinks } from "@/lib/db/queries";
 
 export const metadata: Metadata = {
   title: "无限画布",
@@ -10,9 +15,37 @@ export default function CanvasEditorLayout({
 }: {
   children: React.ReactNode;
 }) {
+  return (
+    <Suspense fallback={<div className="h-screen w-screen bg-background" />}>
+      <CanvasLayoutWrapper>{children}</CanvasLayoutWrapper>
+    </Suspense>
+  );
+}
+
+async function CanvasLayoutWrapper({ children }: { children: React.ReactNode }) {
+  const [session, siteSettings, navLinks] = await Promise.all([
+    auth(),
+    getSiteSettings(),
+    getNavLinks(),
+  ]);
+
   return (
     <div className="h-screen w-screen overflow-hidden bg-background">
-      {children}
+      <TopNavbar
+        siteName={siteSettings.siteName}
+        siteLogo={siteSettings.siteLogo || undefined}
+        siteLogoDark={siteSettings.siteLogoDark || undefined}
+        isAdmin={session?.user?.type === "admin"}
+        customLinks={navLinks.map(link => ({
+          id: link.id,
+          name: link.name,
+          url: link.url,
+          order: link.order
+        }))}
+      />
+      <div className="pt-12 h-full">
+        {children}
+      </div>
     </div>
   );
 }

app/canvas/[id]/page.tsx

@@ -2,9 +2,7 @@
 
 import { useEffect, useState, useCallback, use } from "react";
 import { useRouter } from "next/navigation";
-import Link from "next/link";
 import { 
-  ArrowLeft, 
   Save, 
   Undo2, 
   Redo2, 
@@ -17,15 +15,12 @@ import {
   Video,
   Type,
   Loader2,
-  Settings,
-  Trash2,
   Scissors,
   Sparkles,
   Expand,
   Maximize2,
   Move3D,
   Layers,
-  MoreHorizontal,
   PanelLeftClose,
   PanelLeft,
   Download,
@@ -363,20 +358,9 @@ export default function CanvasEditorPage({ params }: PageProps) {
     <TooltipProvider>
       <div className="h-full flex flex-col bg-background">
         {/* 顶部工具栏 */}
-        <div className="h-12 border-b bg-background/95 backdrop-blur supports-[backdrop-filter]:bg-background/60 flex items-center justify-between px-4 shrink-0">
-          {/* 左侧：返回 + 标题 */}
+        <div className="h-10 border-b bg-background/95 backdrop-blur supports-[backdrop-filter]:bg-background/60 flex items-center justify-between px-4 shrink-0">
+          {/* 左侧：标题编辑 */}
           <div className="flex items-center gap-2">
-            <Tooltip>
-              <TooltipTrigger asChild>
-                <Button variant="ghost" size="icon" asChild>
-                  <Link href="/canvas">
-                    <ArrowLeft className="h-4 w-4" />
-                  </Link>
-                </Button>
-              </TooltipTrigger>
-              <TooltipContent>返回列表</TooltipContent>
-            </Tooltip>
-            
             {isEditingTitle ? (
               <Input
                 value={editTitle}
@@ -386,7 +370,7 @@ export default function CanvasEditorPage({ params }: PageProps) {
                   if (e.key === 'Enter') handleUpdateTitle();
                   if (e.key === 'Escape') setIsEditingTitle(false);
                 }}
-                className="h-8 w-48"
+                className="h-7 w-48 text-sm"
                 autoFocus
               />
             ) : (