diff --git a/app/api/messages/route.ts b/app/api/messages/route.ts
new file mode 100644
index 0000000..c47a8fb
--- /dev/null
+++ b/app/api/messages/route.ts
@@ -0,0 +1,55 @@
+import { NextRequest, NextResponse } from "next/server";
+import { auth } from "@/app/(auth)/auth";
+import { saveMessages } from "@/lib/db/queries";
+import type { DBMessage } from "@/lib/db/schema";
+
+/**
+ * 保存消息到数据库的API
+ * 用于图片处理等场景中保存助手回复消息
+ */
+export async function POST(request: NextRequest) {
+  try {
+    const session = await auth();
+    
+    if (!session?.user?.id) {
+      return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+    }
+
+    const body = await request.json();
+    const { chatId, message } = body;
+
+    if (!chatId || !message) {
+      return NextResponse.json(
+        { error: "Missing required fields: chatId and message" },
+        { status: 400 }
+      );
+    }
+
+    // 构造DBMessage对象
+    const dbMessage: DBMessage = {
+      id: message.id,
+      chatId,
+      role: message.role || "assistant",
+      parts: message.parts || [],
+      attachments: message.attachments || [],
+      createdAt: message.createdAt ? new Date(message.createdAt) : new Date(),
+      videoStorageStatus: null,
+      temporaryVideoUrl: null,
+      permanentVideoUrl: null,
+      archivedAt: null,
+      videoMetadata: null,
+    };
+
+    // 保存消息到数据库
+    await saveMessages({ messages: [dbMessage] });
+
+    return NextResponse.json({ success: true });
+  } catch (error) {
+    console.error("[Messages API] Error:", error);
+    return NextResponse.json(
+      { error: "Failed to save message" },
+      { status: 500 }
+    );
+  }
+}
+
diff --git a/components/chat.tsx b/components/chat.tsx
index 56bd278..07493b3 100644
--- a/components/chat.tsx
+++ b/components/chat.tsx
@@ -32,7 +32,7 @@ import { useDataStream } from "@/components/data-stream-provider";
 import { Messages } from "@/components/messages";
 import { MultimodalInput } from "@/components/multimodal-input";
 import { getChatHistoryPaginationKey } from "@/components/sidebar-history";
-import { toast } from "@/components/toast";
+import { toast } from "sonner";
 import type { VisibilityType } from "@/components/visibility-selector";
 import type { VideoGenerationParams } from "@/components/video-params-bar";
 import type { ImageGenerationParams } from "@/components/image-params-bar";
@@ -317,10 +317,7 @@ export function Chat({
         ) {
           setShowCreditCardAlert(true);
         } else {
-          toast({
-            type: "error",
-            description: error.message,
-          });
+          toast.error(error.message);
         }
       }
     },
@@ -448,6 +445,214 @@ export function Chat({
     setInput((prev) => prev ? prev : "请根据我的标注修改这张图片：");
   };
 
+  // 处理图片变清晰
+  const handleImageEnhance = async (imageUrl: string) => {
+    const messageId = generateUUID();
+    
+    // 创建临时加载消息
+    const loadingMessage: ChatMessage = {
+      id: messageId,
+      role: "assistant",
+      parts: [{ type: "text", text: "正在变清晰..." }],
+      createdAt: new Date().toISOString(),
+    } as ChatMessage;
+    
+    setMessages((prev) => [...prev, loadingMessage]);
+    
+    try {
+      // 获取图片并转换为Base64
+      const response = await fetch(imageUrl);
+      const blob = await response.blob();
+      const reader = new FileReader();
+      
+      reader.onloadend = async () => {
+        try {
+          const base64Data = (reader.result as string).split(",")[1];
+          
+          // 调用变清晰API
+          const enhanceResponse = await fetch("/api/enhance", {
+            method: "POST",
+            headers: {
+              "Content-Type": "application/json",
+            },
+            body: JSON.stringify({
+              image_base64: base64Data,
+              prompt: "图片变清晰处理",
+            }),
+          });
+
+          if (!enhanceResponse.ok) {
+            const error = await enhanceResponse.json();
+            throw new Error(error.error || "变清晰处理失败");
+          }
+
+          const result = await enhanceResponse.json();
+
+          if (result.success && result.original_url) {
+            // 构造图片Markdown（使用与Gemini生成相同的格式）
+            const imageMarkdown = `![thumb|||${result.original_url}|||2K](${result.thumbnail_url || result.original_url})`;
+            
+            // 创建最终消息
+            const finalMessage: ChatMessage = {
+              id: messageId,
+              role: "assistant",
+              parts: [{ type: "text", text: imageMarkdown }],
+              createdAt: new Date().toISOString(),
+            } as ChatMessage;
+            
+            // 更新消息
+            setMessages((prev) => 
+              prev.map((msg) => (msg.id === messageId ? finalMessage : msg))
+            );
+            
+            // 保存消息到数据库
+            try {
+              await fetch("/api/messages", {
+                method: "POST",
+                headers: {
+                  "Content-Type": "application/json",
+                },
+                body: JSON.stringify({
+                  chatId: id,
+                  message: finalMessage,
+                }),
+              });
+            } catch (saveError) {
+              console.error("[Chat] Failed to save message:", saveError);
+            }
+            
+            toast.success(`变清晰完成！处理时间: ${result.processing_time?.toFixed(2) || "未知"}秒`);
+          } else {
+            throw new Error(result.error || "变清晰处理失败");
+          }
+        } catch (error) {
+          console.error("[变清晰] 错误:", error);
+          toast.error(error instanceof Error ? error.message : "变清晰失败，请稍后重试");
+          // 移除加载消息
+          setMessages((prev) => prev.filter((msg) => msg.id !== messageId));
+        }
+      };
+      
+      reader.onerror = () => {
+        toast.error("图片读取失败");
+        setMessages((prev) => prev.filter((msg) => msg.id !== messageId));
+      };
+      
+      reader.readAsDataURL(blob);
+    } catch (error) {
+      console.error("[变清晰] 错误:", error);
+      toast.error(error instanceof Error ? error.message : "变清晰失败，请稍后重试");
+      setMessages((prev) => prev.filter((msg) => msg.id !== messageId));
+    }
+  };
+
+  // 处理图片抠图
+  const handleImageRmbg = async (imageUrl: string) => {
+    const messageId = generateUUID();
+    
+    // 创建临时加载消息
+    const loadingMessage: ChatMessage = {
+      id: messageId,
+      role: "assistant",
+      parts: [{ type: "text", text: "正在抠图..." }],
+      createdAt: new Date().toISOString(),
+    } as ChatMessage;
+    
+    setMessages((prev) => [...prev, loadingMessage]);
+    
+    try {
+      // 获取图片并转换为Base64
+      const response = await fetch(imageUrl);
+      const blob = await response.blob();
+      const reader = new FileReader();
+      
+      reader.onloadend = async () => {
+        try {
+          const base64Data = (reader.result as string).split(",")[1];
+          
+          // 调用抠图API
+          const rmbgResponse = await fetch("/api/rmbg", {
+            method: "POST",
+            headers: {
+              "Content-Type": "application/json",
+            },
+            body: JSON.stringify({
+              image_base64: base64Data,
+              prompt: "抠图处理",
+            }),
+          });
+
+          if (!rmbgResponse.ok) {
+            const error = await rmbgResponse.json();
+            throw new Error(error.error || "抠图处理失败");
+          }
+
+          const result = await rmbgResponse.json();
+
+          if (result.success && result.original_url) {
+            // 构造图片Markdown（使用与Gemini生成相同的格式）
+            const imageMarkdown = `![thumb|||${result.original_url}|||2K](${result.thumbnail_url || result.original_url})`;
+            
+            // 创建最终消息
+            const finalMessage: ChatMessage = {
+              id: messageId,
+              role: "assistant",
+              parts: [{ type: "text", text: imageMarkdown }],
+              createdAt: new Date().toISOString(),
+            } as ChatMessage;
+            
+            // 更新消息
+            setMessages((prev) => 
+              prev.map((msg) => (msg.id === messageId ? finalMessage : msg))
+            );
+            
+            // 保存消息到数据库
+            try {
+              await fetch("/api/messages", {
+                method: "POST",
+                headers: {
+                  "Content-Type": "application/json",
+                },
+                body: JSON.stringify({
+                  chatId: id,
+                  message: {
+                    id: messageId,
+                    role: "assistant",
+                    parts: [{ type: "text", text: imageMarkdown }],
+                    attachments: [],
+                    createdAt: new Date().toISOString(),
+                  },
+                }),
+              });
+            } catch (saveError) {
+              console.error("[Chat] Failed to save message:", saveError);
+            }
+            
+            toast.success(`抠图完成！处理时间: ${result.processing_time?.toFixed(2) || "未知"}秒`);
+          } else {
+            throw new Error(result.error || "抠图处理失败");
+          }
+        } catch (error) {
+          console.error("[抠图] 错误:", error);
+          toast.error(error instanceof Error ? error.message : "抠图失败，请稍后重试");
+          // 移除加载消息
+          setMessages((prev) => prev.filter((msg) => msg.id !== messageId));
+        }
+      };
+      
+      reader.onerror = () => {
+        toast.error("图片读取失败");
+        setMessages((prev) => prev.filter((msg) => msg.id !== messageId));
+      };
+      
+      reader.readAsDataURL(blob);
+    } catch (error) {
+      console.error("[抠图] 错误:", error);
+      toast.error(error instanceof Error ? error.message : "抠图失败，请稍后重试");
+      setMessages((prev) => prev.filter((msg) => msg.id !== messageId));
+    }
+  };
+
   useAutoResume({
     autoResume,
     initialMessages,
@@ -477,6 +682,8 @@ export function Chat({
           votes={votes}
           onImageEdit={handleImageEdit}
           onDrawingComplete={handleDrawingComplete}
+          onImageEnhance={handleImageEnhance}
+          onImageRmbg={handleImageRmbg}
           pendingGeneration={pendingGeneration}
           imageCount={imageParams?.imageCount || 1}
         />
diff --git a/components/elements/response.tsx b/components/elements/response.tsx
index 803dd9d..b60f698 100644
--- a/components/elements/response.tsx
+++ b/components/elements/response.tsx
@@ -9,10 +9,12 @@ import { VideoPreview } from "@/components/video-preview";
 type ResponseProps = ComponentProps<typeof Streamdown> & {
   onImageEdit?: (imageUrl: string) => void;
   onDrawingComplete?: (annotatedImageUrl: string) => void;
+  onImageEnhance?: (imageUrl: string) => void;
+  onImageRmbg?: (imageUrl: string) => void;
 };
 
 export const Response = memo(
-  ({ className, onImageEdit, onDrawingComplete, ...props }: ResponseProps) => (
+  ({ className, onImageEdit, onDrawingComplete, onImageEnhance, onImageRmbg, ...props }: ResponseProps) => (
     <Streamdown
       className={cn(
         "size-full [&>*:first-child]:mt-0 [&>*:last-child]:mb-0 [&_code]:whitespace-pre-wrap [&_code]:break-words [&_pre]:max-w-full [&_pre]:overflow-x-auto",
@@ -23,7 +25,14 @@ export const Response = memo(
           if (!src) {
             return null;
           }
-          return <ImagePreview src={src} alt={alt} onImageEdit={onImageEdit} onDrawingComplete={onDrawingComplete} />;
+          return <ImagePreview 
+            src={src} 
+            alt={alt} 
+            onImageEdit={onImageEdit} 
+            onDrawingComplete={onDrawingComplete}
+            onImageEnhance={onImageEnhance}
+            onImageRmbg={onImageRmbg}
+          />;
         },
         video: ({ src, alt }: { src?: string; alt?: string }) => {
           if (!src) {
@@ -36,7 +45,11 @@ export const Response = memo(
     />
   ),
   (prevProps: ResponseProps, nextProps: ResponseProps) => 
-    prevProps.children === nextProps.children && prevProps.onImageEdit === nextProps.onImageEdit && prevProps.onDrawingComplete === nextProps.onDrawingComplete
+    prevProps.children === nextProps.children && 
+    prevProps.onImageEdit === nextProps.onImageEdit && 
+    prevProps.onDrawingComplete === nextProps.onDrawingComplete &&
+    prevProps.onImageEnhance === nextProps.onImageEnhance &&
+    prevProps.onImageRmbg === nextProps.onImageRmbg
 );
 
 Response.displayName = "Response";
diff --git a/components/image-preview.tsx b/components/image-preview.tsx
index f822cc4..2145c5f 100644
--- a/components/image-preview.tsx
+++ b/components/image-preview.tsx
@@ -1,7 +1,7 @@
 "use client";
 
 import React, { useState } from "react";
-import { X, Download, Edit, Target, Paintbrush } from "lucide-react";
+import { X, Download, Edit, Target, Paintbrush, Sparkles, Scissors } from "lucide-react";
 import { toast } from "sonner";
 import { ImageAnnotator } from "./image-annotator";
 
@@ -11,6 +11,8 @@ export function ImagePreview({
   onImageEdit,
   onAnnotate,
   onDrawingComplete,
+  onImageEnhance,
+  onImageRmbg,
   imageIndex
 }: { 
   src: string; 
@@ -22,6 +24,8 @@ export function ImagePreview({
     formattedText: string;
   }) => void;
   onDrawingComplete?: (annotatedImageUrl: string) => void;
+  onImageEnhance?: (imageUrl: string) => void;
+  onImageRmbg?: (imageUrl: string) => void;
   imageIndex?: number;
 }) {
   const [isOpen, setIsOpen] = useState(false);
@@ -199,6 +203,40 @@ export function ImagePreview({
           onClick={() => setIsOpen(true)}
         />
         
+        {/* 左上角：变清晰和抠图按钮 */}
+        {(onImageEnhance || onImageRmbg) && (
+          <div className="absolute top-2 left-2 flex gap-1.5 opacity-0 transition-opacity group-hover:opacity-100 z-10">
+            {onImageEnhance && (
+              <button
+                className="rounded-full bg-blue-600/90 hover:bg-blue-700 p-2 text-white transition-colors shadow-lg"
+                onClick={(e) => {
+                  e.stopPropagation();
+                  onImageEnhance(original);
+                }}
+                type="button"
+                aria-label="变清晰"
+                title="变清晰"
+              >
+                <Sparkles size={16} />
+              </button>
+            )}
+            {onImageRmbg && (
+              <button
+                className="rounded-full bg-green-600/90 hover:bg-green-700 p-2 text-white transition-colors shadow-lg"
+                onClick={(e) => {
+                  e.stopPropagation();
+                  onImageRmbg(original);
+                }}
+                type="button"
+                aria-label="抠图"
+                title="抠图"
+              >
+                <Scissors size={16} />
+              </button>
+            )}
+          </div>
+        )}
+        
         {/* 悬停时显示的操作按钮 */}
         <div className="absolute bottom-2 right-2 flex gap-1.5 opacity-0 transition-opacity group-hover:opacity-100">
           {/* 画图按钮 */}
diff --git a/components/image-processing-loading.tsx b/components/image-processing-loading.tsx
new file mode 100644
index 0000000..678ecbc
--- /dev/null
+++ b/components/image-processing-loading.tsx
@@ -0,0 +1,158 @@
+"use client";
+
+import { memo } from "react";
+import { SparklesIcon } from "./icons";
+import { Scissors } from "lucide-react";
+
+interface ImageProcessingLoadingProps {
+  type: "enhance" | "rmbg"; // 处理类型：变清晰或抠图
+}
+
+/**
+ * 图片处理加载占位符组件
+ * 显示类似 Gemini 生图的动态卡片效果
+ */
+export const ImageProcessingLoading = memo(({ type }: ImageProcessingLoadingProps) => {
+  const isEnhance = type === "enhance";
+  const color = isEnhance ? "blue" : "green";
+  const text = isEnhance ? "正在变清晰" : "正在抠图";
+  const icon = isEnhance ? SparklesIcon : Scissors;
+  const Icon = icon;
+
+  // 根据类型设置颜色类名
+  const colorClasses = isEnhance 
+    ? {
+        ping: "bg-blue-500/20",
+        pulse: "bg-blue-500/10",
+        ring: "ring-blue-500/30",
+        text: "text-blue-500",
+        dot: "bg-blue-500",
+        gradientFrom: "from-blue-400",
+        gradientFromOverlay: "from-blue-500/40",
+        gradientToOverlay: "to-blue-500/30",
+      }
+    : {
+        ping: "bg-green-500/20",
+        pulse: "bg-green-500/10",
+        ring: "ring-green-500/30",
+        text: "text-green-500",
+        dot: "bg-green-500",
+        gradientFrom: "from-green-400",
+        gradientFromOverlay: "from-green-500/40",
+        gradientToOverlay: "to-green-500/30",
+      };
+
+  return (
+    <div
+      className="group/message fade-in w-full animate-in duration-300"
+      data-role="assistant"
+      data-testid="message-assistant-image-processing-loading"
+    >
+      <div className="flex items-start justify-start gap-3">
+        {/* 头像 */}
+        <div className="relative -mt-1 flex size-8 shrink-0 items-center justify-center">
+          <div className={`absolute inset-0 rounded-full ${colorClasses.ping} animate-ping`} />
+          <div className={`absolute inset-0 rounded-full ${colorClasses.pulse} animate-pulse`} />
+          <div className={`relative flex size-8 items-center justify-center rounded-full bg-background ring-2 ${colorClasses.ring}`}>
+            <div className={`animate-spin ${colorClasses.text}`}>
+              <Icon size={14} />
+            </div>
+          </div>
+        </div>
+
+        <div className="flex flex-col gap-3">
+          {/* 文本提示 */}
+          <div className="flex items-center gap-1.5">
+            <span className="text-base font-medium text-foreground">
+              {text}
+            </span>
+            <span className="flex gap-1">
+              <span
+                className={`h-2 w-2 rounded-full ${colorClasses.dot} animate-bounce`}
+                style={{ animationDelay: "0ms" }}
+              />
+              <span
+                className={`h-2 w-2 rounded-full ${colorClasses.dot} animate-bounce`}
+                style={{ animationDelay: "150ms" }}
+              />
+              <span
+                className={`h-2 w-2 rounded-full ${colorClasses.dot} animate-bounce`}
+                style={{ animationDelay: "300ms" }}
+              />
+            </span>
+          </div>
+
+          {/* 图片占位符 - 170x200px */}
+          <div className="relative overflow-hidden rounded-xl" style={{ width: "170px", height: "200px" }}>
+            {/* 底层渐变背景 */}
+            <div className={`absolute inset-0 bg-gradient-to-br ${colorClasses.gradientFrom} via-purple-400 to-pink-400 opacity-60`} />
+            
+            {/* 动态模糊叠加层 1 */}
+            <div 
+              className={`absolute inset-0 bg-gradient-to-tr ${colorClasses.gradientFromOverlay} via-transparent to-purple-500/40 animate-pulse`}
+              style={{ animationDuration: "2s" }}
+            />
+            
+            {/* 动态模糊叠加层 2 */}
+            <div 
+              className={`absolute inset-0 bg-gradient-to-bl from-purple-500/30 via-transparent ${colorClasses.gradientToOverlay} animate-pulse`}
+              style={{ animationDuration: "2.5s", animationDelay: "0.5s" }}
+            />
+            
+            {/* 噪点纹理效果 */}
+            <div 
+              className="absolute inset-0 opacity-30"
+              style={{
+                backgroundImage: `url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E")`,
+              }}
+            />
+            
+            {/* 模糊叠加 */}
+            <div className="absolute inset-0 backdrop-blur-sm" />
+            
+            {/* 中心图标 */}
+            <div className="absolute inset-0 flex items-center justify-center">
+              <div className="relative">
+                {/* 外圈光晕 */}
+                <div className="absolute -inset-4 rounded-full bg-white/20 animate-ping" style={{ animationDuration: "1.5s" }} />
+                {/* 图标 */}
+                <Icon
+                  className="h-10 w-10 text-white/80 animate-pulse"
+                  style={{ animationDuration: "1.5s" }}
+                />
+              </div>
+            </div>
+            
+            {/* 流光效果 */}
+            <div 
+              className="absolute inset-0 bg-gradient-to-r from-transparent via-white/20 to-transparent -translate-x-full"
+              style={{ 
+                animation: "shimmer 2s infinite",
+              }}
+            />
+          </div>
+          
+          {/* 提示文字 */}
+          <span className="text-xs text-muted-foreground">
+            正在处理图片，请稍候...
+          </span>
+        </div>
+      </div>
+      
+      {/* 流光动画样式 */}
+      <style jsx>{`
+        @keyframes shimmer {
+          0% {
+            transform: translateX(-100%);
+          }
+          100% {
+            transform: translateX(100%);
+          }
+        }
+      `}</style>
+    </div>
+  );
+});
+
+ImageProcessingLoading.displayName = "ImageProcessingLoading";
+
diff --git a/components/message.tsx b/components/message.tsx
index fc8884a..8ceae80 100644
--- a/components/message.tsx
+++ b/components/message.tsx
@@ -23,6 +23,7 @@ import { MessageEditor } from "./message-editor";
 import { MessageReasoning } from "./message-reasoning";
 import { PreviewAttachment } from "./preview-attachment";
 import { Weather } from "./weather";
+import { ImageProcessingLoading } from "./image-processing-loading";
 
 /**
  * 解析文本中的标注内容，返回文本片段数组
@@ -147,6 +148,8 @@ const PurePreviewMessage = ({
   requiresScrollPadding: _requiresScrollPadding,
   onImageEdit,
   onDrawingComplete,
+  onImageEnhance,
+  onImageRmbg,
 }: {
   chatId: string;
   message: ChatMessage;
@@ -159,6 +162,8 @@ const PurePreviewMessage = ({
   requiresScrollPadding: boolean;
   onImageEdit?: (imageUrl: string) => void;
   onDrawingComplete?: (annotatedImageUrl: string) => void;
+  onImageEnhance?: (imageUrl: string) => void;
+  onImageRmbg?: (imageUrl: string) => void;
 }) => {
   const [mode, setMode] = useState<"view" | "edit">("view");
 
@@ -235,6 +240,17 @@ const PurePreviewMessage = ({
 
             if (type === "text") {
               if (mode === "view") {
+                // 检查是否是图片处理的加载消息
+                if (part.text === "正在变清晰..." || part.text === "正在抠图...") {
+                  const isEnhance = part.text === "正在变清晰...";
+                  return (
+                    <ImageProcessingLoading 
+                      key={key} 
+                      type={isEnhance ? "enhance" : "rmbg"} 
+                    />
+                  );
+                }
+                
                 // 应用视频内容过滤
                 const filteredText = filterVideoContent(part.text);
                 const textParts = parseAnnotations(filteredText);
@@ -267,7 +283,13 @@ const PurePreviewMessage = ({
                           );
                         }
                         return (
-                          <Response key={partIndex} onImageEdit={onImageEdit} onDrawingComplete={onDrawingComplete}>
+                          <Response 
+                            key={partIndex} 
+                            onImageEdit={onImageEdit} 
+                            onDrawingComplete={onDrawingComplete}
+                            onImageEnhance={onImageEnhance}
+                            onImageRmbg={onImageRmbg}
+                          >
                             {sanitizeText(part.content)}
                           </Response>
                         );
diff --git a/components/messages.tsx b/components/messages.tsx
index 9c642b5..04a139a 100644
--- a/components/messages.tsx
+++ b/components/messages.tsx
@@ -37,6 +37,8 @@ type MessagesProps = {
   selectedModelId: string;
   onImageEdit?: (imageUrl: string) => void;
   onDrawingComplete?: (annotatedImageUrl: string) => void;
+  onImageEnhance?: (imageUrl: string) => void;
+  onImageRmbg?: (imageUrl: string) => void;
   pendingGeneration?: PendingGeneration | null; // 🆕 持久化的生成状态
   imageCount?: number; // 🆕 用户选择的图片数量
 };
@@ -53,6 +55,8 @@ function PureMessages({
   selectedModelId,
   onImageEdit,
   onDrawingComplete,
+  onImageEnhance,
+  onImageRmbg,
   pendingGeneration,
   imageCount = 1,
 }: MessagesProps) {
@@ -220,6 +224,8 @@ function PureMessages({
               }
               onImageEdit={onImageEdit}
               onDrawingComplete={onDrawingComplete}
+              onImageEnhance={onImageEnhance}
+              onImageRmbg={onImageRmbg}
             />
           ))}