feat: 全新智能体功能

- 基于先进智能体框架，增加智能体编排功能
- 增加智能体聊天，并对接持久化

easyflow-ui-admin/packages/effects/common-ui/src/components/chat-timeline/ChatErrorNotice.vue

@@ -0,0 +1,42 @@
+<script setup lang="ts">
+defineProps<{
+  message: string;
+}>();
+</script>
+
+<template>
+  <div class="chat-error-notice" role="alert">
+    <span class="chat-error-notice__icon" aria-hidden="true">!</span>
+    <span>{{ message }}</span>
+  </div>
+</template>
+
+<style scoped>
+.chat-error-notice {
+  display: flex;
+  gap: 8px;
+  align-items: flex-start;
+  max-width: min(78%, 680px);
+  padding: 10px 12px;
+  font-size: 13px;
+  line-height: 20px;
+  color: var(--el-color-danger);
+  background: var(--el-color-danger-light-9);
+  border: 1px solid var(--el-color-danger-light-7);
+  border-radius: 8px;
+}
+
+.chat-error-notice__icon {
+  display: inline-flex;
+  flex: 0 0 auto;
+  align-items: center;
+  justify-content: center;
+  width: 16px;
+  height: 16px;
+  margin-top: 2px;
+  font-size: 12px;
+  font-weight: 700;
+  border: 1px solid currentColor;
+  border-radius: 50%;
+}
+</style>