feat: 画布图片添加到对话框改为手动触发

- 在图片工具栏添加"添加到对话"按钮
- 移除选中图片时自动添加标签的逻辑
- 通过 canvas store 的 pendingChatAttachments 实现跨组件通信
- 用户点击按钮后才会将图片添加到对话框，避免标签越来越多

components/canvas/CanvasChatPanel.tsx

@@ -108,6 +108,8 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
   const nodes = useCanvasStore((state) => state.nodes);
   const selectedNodeIds = useCanvasStore((state) => state.selectedNodeIds);
   const clearSelection = useCanvasStore((state) => state.clearSelection);
+  const pendingChatAttachments = useCanvasStore((state) => state.pendingChatAttachments);
+  const clearPendingChatAttachments = useCanvasStore((state) => state.clearPendingChatAttachments);
   
   // 获取纯 UUID（去掉 canvas- 前缀）用于 API 调用
   const rawChatId = chatId.startsWith('canvas-') 
@@ -159,33 +161,30 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
     }
   }, []);
 
-  // 当选中画布中的图片时，自动添加到附件并插入标签
+  // 🆕 监听 pendingChatAttachments，当用户点击"添加到对话"按钮时添加标签
   useEffect(() => {
-    if (selectedImageNodes.length > 0) {
+    if (pendingChatAttachments.length > 0) {
-      const newAttachments: Attachment[] = selectedImageNodes.map(node => {
-        const data = node.data as any;
-        return {
-          url: data.src,
-          name: data.prompt || '画布图片',
-          contentType: 'image/jpeg',
-        };
-      });
-      
       // 只添加还没在附件中的图片
       setAttachments(prev => {
         const existingUrls = new Set(prev.map(a => a.url));
-        const toAdd = newAttachments.filter(a => !existingUrls.has(a.url));
+        const toAdd = pendingChatAttachments.filter(a => !existingUrls.has(a.url));
         if (toAdd.length > 0) {
           // 插入图片标签到编辑器
           toAdd.forEach((att, i) => {
             insertImageTagInEditor(att.url, att.name, prev.length + i);
           });
+          // 聚焦到输入框
+          setTimeout(() => {
+            (textareaRef.current as HTMLDivElement | null)?.focus();
+          }, 0);
           return [...prev, ...toAdd];
         }
         return prev;
       });
+      // 清空待添加列表
+      clearPendingChatAttachments();
     }
-  }, [selectedImageNodes.length, selectedNodeIds, insertImageTagInEditor]);
+  }, [pendingChatAttachments, insertImageTagInEditor, clearPendingChatAttachments]);
   
   // 获取模型列表
   const { data: modelsData } = useSWR<{

components/canvas/nodes/ImageNode.tsx

@@ -2,7 +2,7 @@
 
 import React, { useState, useRef, useEffect } from "react";
 import { createPortal } from "react-dom";
-import { ImagePlus, Loader2, AlertCircle, MoreVertical, Scissors, Sparkles, Expand, Maximize2, Move3D, Layers, Download, Trash2, RefreshCw, Pencil } from "lucide-react";
+import { ImagePlus, Loader2, AlertCircle, MoreVertical, Scissors, Sparkles, Expand, Maximize2, Move3D, Layers, Download, Trash2, RefreshCw, Pencil, MessageSquarePlus } from "lucide-react";
 import { Button } from "@/components/ui/button";
 import {
   DropdownMenu,
@@ -53,6 +53,7 @@ export function ImageNode({ node, isSelected }: ImageNodeProps) {
   const updateNode = useCanvasStore((state) => state.updateNode);
   const deleteNode = useCanvasStore((state) => state.deleteNode);
   const addNode = useCanvasStore((state) => state.addNode);
+  const addPendingChatAttachment = useCanvasStore((state) => state.addPendingChatAttachment);
   
   // 获取工具栏位置 - 在渲染时直接计算
   const getToolbarPosition = () => {
@@ -572,6 +573,28 @@ export function ImageNode({ node, isSelected }: ImageNodeProps) {
           }}
           onClick={(e) => e.stopPropagation()}
         >
+          {/* 🆕 添加到对话 */}
+          <Button
+            variant="ghost"
+            size="sm"
+            className="h-9 px-3 text-xs gap-1.5 rounded-full hover:bg-blue-50 text-blue-600 hover:text-blue-700"
+            onClick={() => {
+              addPendingChatAttachment({
+                url: data.src!,
+                name: data.prompt || '画布图片',
+                contentType: 'image/jpeg',
+              });
+              toast.success('已添加到对话框');
+            }}
+            title="添加到对话框"
+          >
+            <MessageSquarePlus className="h-4 w-4" />
+            <span>对话</span>
+          </Button>
+          
+          {/* 分隔线 */}
+          <div className="h-5 w-px bg-gray-200 mx-1" />
+          
           {/* 放大/高清 */}
           <Button
             variant="ghost"

store/canvas/index.ts

@@ -22,6 +22,13 @@ const defaultViewport: Viewport = {
   zoom: 1,
 };
 
+// 待添加到对话框的图片附件
+interface PendingChatAttachment {
+  url: string;
+  name: string;
+  contentType: string;
+}
+
 // Store 状态接口
 interface CanvasStore {
   // 项目信息
@@ -43,6 +50,9 @@ interface CanvasStore {
   isPanelOpen: boolean;
   isGenerating: boolean;
   
+  // 🆕 待添加到对话框的图片（用于从画布添加图片到对话）
+  pendingChatAttachments: PendingChatAttachment[];
+  
   // 项目操作
   setProject: (id: string | null, title?: string) => void;
   setProjectTitle: (title: string) => void;
@@ -96,6 +106,10 @@ interface CanvasStore {
   getNode: (id: string) => CanvasNode | undefined;
   getSelectedNodes: () => CanvasNode[];
   getNodesByType: (type: NodeType) => CanvasNode[];
+  
+  // 🆕 对话框附件操作
+  addPendingChatAttachment: (attachment: PendingChatAttachment) => void;
+  clearPendingChatAttachments: () => void;
 }
 
 export const useCanvasStore = create<CanvasStore>()(
@@ -114,6 +128,7 @@ export const useCanvasStore = create<CanvasStore>()(
         historyIndex: -1,
         isPanelOpen: true,
         isGenerating: false,
+        pendingChatAttachments: [], // 🆕 待添加到对话框的图片
 
         // 项目操作
         setProject: (id, title) => set((state) => {
@@ -369,6 +384,18 @@ export const useCanvasStore = create<CanvasStore>()(
         },
         
         getNodesByType: (type) => get().nodes.filter(n => n.type === type),
+        
+        // 🆕 对话框附件操作
+        addPendingChatAttachment: (attachment) => set((state) => {
+          // 避免重复添加
+          if (!state.pendingChatAttachments.some(a => a.url === attachment.url)) {
+            state.pendingChatAttachments.push(attachment);
+          }
+        }),
+        
+        clearPendingChatAttachments: () => set((state) => {
+          state.pendingChatAttachments = [];
+        }),
       })),
       {
         name: 'canvas-storage',