sub_flow 节点引入工作流修复与首页执行工作流重构

- 引入工作流列表字段兼容 flowName，选择弹窗卡片正常展示数据
- 生成次数 maxConcurrency 同步保存到 sub_flow 节点，回显兜底恢复
- valueSource 按后端契约统一 {nodeId, fieldName}，表单展示/引用正确保存与回显
- 首页执行工作流 DSL 字段路径改为 .enumValues[i]，支持引用上游输出与上传文件名

src/views/home/components/InputBar.vue

@@ -37,7 +37,13 @@
 						<el-icon><MagicStick /></el-icon>
 						<span class="tool-label">技能</span>
 					</button>
-				</div>
+
+					<!-- 切换会话模型入口 -->
+					<button class="tool-icon-btn" :class="{ active: !!currentModelName }" title="切换会话模型" @click="emit('select-model')">
+						<el-icon><Cpu /></el-icon>
+						<span class="tool-label">{{ currentModelName || '设置模型' }}</span>
+					</button>
+					</div>
 
 				<div class="toolbar-right">
 					<span class="hint-text">Shift+Enter 换行</span>
@@ -75,7 +81,7 @@
 
 <script setup lang="ts">
 import { ref, computed, onMounted } from 'vue';
-import { Top, MagicStick, Promotion, Close, Paperclip, VideoPause } from '@element-plus/icons-vue';
+import { Top, MagicStick, Promotion, Close, Paperclip, VideoPause, Cpu } from '@element-plus/icons-vue';
 import { ElMessage } from 'element-plus';
 import { getWorkflowList } from '/@/api/settings/creation';
 
@@ -84,12 +90,15 @@ interface Props {
 	workflowLocked?: boolean;
 	hideShortcuts?: boolean;
 	generating?: boolean;
+	// 当前会话模型名称，用于输入栏切换入口展示
+	currentModelName?: string;
 }
 
 interface Emits {
 	(e: 'send', message: string): void;
 	(e: 'workflow-select', workflowId: string | null, isTemplate?: boolean): void;
 	(e: 'stop'): void;
+	(e: 'select-model'): void;
 }
 
 interface Workflow {
@@ -105,6 +114,7 @@ const props = withDefaults(defineProps<Props>(), {
 	workflowLocked: false,
 	hideShortcuts: false,
 	generating: false,
+	currentModelName: '',
 });
 const emit = defineEmits<Emits>();
 const message = ref('');