调整画布保存机制，把保存画布接口放到状态管理中，完善toRealStyle提示词

src/components/Canvas/FlowCanvas/index.vue

@@ -1,6 +1,6 @@
 <template>
 	<fullscreen-dialog v-model="dialogVisible" @close="close" hide-destroy>
-		<flow-canvas ref="flowCanvasRef" :config="config" @exportFlow="exportFlow" />
+		<flow-canvas ref="flowCanvasRef" :config="config" />
 	</fullscreen-dialog>
 </template>
 
@@ -31,22 +31,7 @@
 		config.value.json = json
 		dialogVisible.value = true
 	}
-	const exportFlow = async (str) => {
-		if(!config.value.imgId || !str)return
-		await new Promise((resolve) => {
-			putSketchFlowCanvas({ 
-				id: config.value.imgId,
-				canvasData: str },true).then(() => {
-				resolve(true)
-			}).catch(() => {
-				resolve(true)
-			})
-		})
-	}
-
 	const close = async () => {
-		const str = flowCanvasRef.value?.getFlowJson()
-		await exportFlow(str)
 		dialogVisible.value = false
 	}
 	const handleBeforeUnload = (event) => {
@@ -67,7 +52,6 @@
 	defineExpose({
 		open,
 		close,
-		exportFlow
 	})
 </script>
 <style lang="less" scoped>