图片编辑器全屏显示并显示网站LOGO和名称

- 恢复图片编辑器为全屏显示（fixed inset-0）
- 标题栏显示网站LOGO和网站名（从系统设置获取）
- 根据主题自动选择合适的LOGO（深色主题优先使用siteLogoDark）
- 点击LOGO或网站名可跳转到首页
- 移除未使用的router导入

components/image-annotator.tsx

@@ -2,6 +2,8 @@
 
 import React, { useRef, useState, useEffect, useCallback } from "react";
 import { createPortal } from "react-dom";
+import Link from "next/link";
+import { useTheme } from "next-themes";
 import { X, Pencil, Circle, ArrowRight, Type, Check, Undo, Trash2, Scissors, Sparkles, Download, Expand, Move, Maximize2, ZoomIn, ZoomOut, Loader2 } from "lucide-react";
 import { Button } from "./ui/button";
 import { Input } from "./ui/input";
@@ -83,6 +85,12 @@ export function ImageAnnotator({ imageUrl, onConfirm, onCancel, initialResizeMod
   const [isResizing, setIsResizing] = useState(false); // 尺寸调整处理中状态
   const resizeCanvasRef = useRef<HTMLCanvasElement>(null);
   const resizeContainerRef = useRef<HTMLDivElement>(null);
+  
+  // 网站设置相关状态
+  const [siteName, setSiteName] = useState<string>("AI Chatbot");
+  const [siteLogo, setSiteLogo] = useState<string | null>(null);
+  const [siteLogoDark, setSiteLogoDark] = useState<string | null>(null);
+  const { resolvedTheme } = useTheme();
 
   // 比例选项定义
   const aspectRatios = [
@@ -145,6 +153,18 @@ export function ImageAnnotator({ imageUrl, onConfirm, onCancel, initialResizeMod
   // 确保在客户端渲染
   useEffect(() => {
     setMounted(true);
+    
+    // 获取网站设置
+    fetch(`/api/site-settings?t=${Date.now()}`)
+      .then((res) => res.json())
+      .then((data) => {
+        if (data.siteName) setSiteName(data.siteName);
+        if (data.siteLogo) setSiteLogo(data.siteLogo);
+        if (data.siteLogoDark) setSiteLogoDark(data.siteLogoDark);
+      })
+      .catch((err) => {
+        console.error("[ImageAnnotator] Failed to fetch site settings:", err);
+      });
   }, []);
 
   // 加载图片
@@ -965,20 +985,42 @@ export function ImageAnnotator({ imageUrl, onConfirm, onCancel, initialResizeMod
     onConfirm(dataUrl);
   };
 
+  // 决定显示哪个 LOGO（根据主题）
+  const displayLogo = resolvedTheme === "dark" && siteLogoDark 
+    ? siteLogoDark 
+    : siteLogo;
+
   // 弹窗内容
   const modalContent = (
     <div 
-      className="fixed top-12 inset-x-0 bottom-0 z-[9999] flex items-center justify-center bg-background"
+      className="fixed inset-0 z-[9999] flex items-center justify-center bg-background"
       onClick={onCancel}
     >
-      {/* 弹窗容器 - 全屏显示（保留顶部导航栏） */}
+      {/* 弹窗容器 - 全屏显示 */}
       <div 
         className="flex flex-col overflow-hidden w-full h-full"
         onClick={(e) => e.stopPropagation()}
       >
         {/* 顶部标题栏 */}
         <div className="flex items-center justify-between border-b px-4 py-3">
-          <span className="text-base font-medium">图片编辑</span>
+          <Link 
+            href="/" 
+            className="flex items-center gap-2 hover:opacity-80 transition-opacity"
+            onClick={(e) => e.stopPropagation()}
+          >
+            {displayLogo ? (
+              <>
+                <img 
+                  src={displayLogo} 
+                  alt={siteName}
+                  className="h-6 w-auto"
+                />
+                <span className="text-base font-medium">{siteName}</span>
+              </>
+            ) : (
+              <span className="text-base font-medium">{siteName}</span>
+            )}
+          </Link>
           <div className="flex items-center gap-2">
             <Button 
               variant="ghost"