feat: 完成工作流开始节点开场表单

- 增加开始节点 startFormMeta/startFormSchema 配置与运行参数解析

- 统一 Admin/UserCenter 开场表单渲染与文件集合输入

- 补充开始表单校验、引用迁移和前端工具测试

easyflow-ui-usercenter/app/src/views/ai/resource/ChooseResource.vue

@@ -12,6 +12,10 @@ const props = defineProps({
     type: String,
     required: true,
   },
+  multiple: {
+    type: Boolean,
+    default: false,
+  },
 });
 
 const emit = defineEmits(['choose']);
@@ -27,7 +31,7 @@ function closeDialog() {
   dialogVisible.value = false;
 }
 function confirm() {
-  emit('choose', currentChoose.value, props.attrName);
+  emit('choose', props.multiple ? chooseResources.value : currentChoose.value, props.attrName);
   closeDialog();
 }
 watch(
@@ -56,7 +60,11 @@ watch(
         :page-sizes="[8, 12, 16, 20]"
       >
         <template #default="{ pageList }">
-          <ResourceCardList v-model="chooseResources" :data="pageList" />
+          <ResourceCardList
+            v-model="chooseResources"
+            :data="pageList"
+            :multiple="props.multiple"
+          />
         </template>
       </PageData>
       <template #footer>