feat(canvas): add group node support with drag-and-drop functionality

web/src/components/canvas/canvas-node-hover-toolbar.tsx

@@ -218,7 +218,6 @@ export function CanvasNodeInfoModal({ node, open, onClose }: { node: CanvasNodeD
         return JSON.stringify(
             node,
             (key, value) => {
-                if (key === "title") return undefined;
                 if (key === "content" && typeof value === "string" && value.startsWith("data:image/")) {
                     return "[base64 image]";
                 }
@@ -254,6 +253,7 @@ export function CanvasNodeInfoModal({ node, open, onClose }: { node: CanvasNodeD
                     {view === "info" ? (
                         <div className="thin-scrollbar h-full space-y-3 overflow-auto pr-1">
                             <InfoRow label="ID" value={node.id} />
+                            <InfoRow label="名称" value={node.title || "未命名节点"} />
                             <InfoRow label="类型" value={node.type === CanvasNodeType.Text ? "文本" : node.type === CanvasNodeType.Image ? "图片" : node.type === CanvasNodeType.Video ? "视频" : node.type === CanvasNodeType.Audio ? "音频" : node.type === CanvasNodeType.Group ? "组" : "生成配置"} />
                             <InfoRow label="尺寸" value={`${Math.round(node.width)} x ${Math.round(node.height)}`} />
                             <InfoRow label="位置" value={`${Math.round(node.position.x)}, ${Math.round(node.position.y)}`} />