feat: AI测试输出渲染Markdown/流式响应、Coze/Dify适配器优化

- 新增 MarkdownPreview 组件，支持 AI 测试输出 Markdown 渲染
- Coze 适配器优化：支持流式响应、工作流接口调用、SSE事件处理
- Dify 适配器优化：支持停止接口、流式聊天、SSE事件解析
- web-admin 添加 markdown-it 和 highlight.js 依赖
- AI 配置列表页面优化测试对话框输出显示

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

web-admin/src/views/aiconfig/AiRoutingList.vue

@@ -272,14 +272,20 @@
         :title="nonStreamResult.status === 'success' ? '非流式测试成功' : '非流式测试失败'"
         show-icon
       />
-      <pre v-if="nonStreamResult" class="test-output">{{ nonStreamResult.output || nonStreamResult.errorMessage || '暂无输出' }}</pre>
+      <div v-if="nonStreamResult" class="test-output">
+        <MarkdownPreview v-if="nonStreamResult.status === 'success'" :content="testOutput(nonStreamResult)" />
+        <pre v-else class="plain-output">{{ testOutput(nonStreamResult) }}</pre>
+      </div>
       <el-alert
         v-if="testResult"
         :type="testResult.status === 'success' ? 'success' : 'error'"
         :title="testResult.status === 'success' ? '流式测试成功' : '流式测试失败'"
         show-icon
       />
-      <pre v-if="testResult" class="test-output">{{ testResult.output || testResult.errorMessage || '暂无输出' }}</pre>
+      <div v-if="testResult" ref="sceneOutputRef" class="test-output">
+        <MarkdownPreview v-if="testResult.status === 'success'" :content="testOutput(testResult)" />
+        <pre v-else class="plain-output">{{ testOutput(testResult) }}</pre>
+      </div>
       <template #footer>
         <el-button @click="testDialog = false">关闭</el-button>
         <el-button :loading="testing" @click="submitNonStreamTest">非流式测试</el-button>
@@ -313,14 +319,20 @@
         :title="endpointNonStreamResult.status === 'success' ? '非流式测试成功' : '非流式测试失败'"
         show-icon
       />
-      <pre v-if="endpointNonStreamResult" class="test-output">{{ endpointNonStreamResult.output || endpointNonStreamResult.errorMessage || '暂无输出' }}</pre>
+      <div v-if="endpointNonStreamResult" class="test-output">
+        <MarkdownPreview v-if="endpointNonStreamResult.status === 'success'" :content="testOutput(endpointNonStreamResult)" />
+        <pre v-else class="plain-output">{{ testOutput(endpointNonStreamResult) }}</pre>
+      </div>
       <el-alert
         v-if="endpointTestResult"
         :type="endpointTestResult.status === 'success' ? 'success' : 'error'"
         :title="endpointTestResult.status === 'success' ? '流式测试成功' : '流式测试失败'"
         show-icon
       />
-      <pre v-if="endpointTestResult" class="test-output">{{ endpointTestResult.output || endpointTestResult.errorMessage || '暂无输出' }}</pre>
+      <div v-if="endpointTestResult" ref="endpointOutputRef" class="test-output">
+        <MarkdownPreview v-if="endpointTestResult.status === 'success'" :content="testOutput(endpointTestResult)" />
+        <pre v-else class="plain-output">{{ testOutput(endpointTestResult) }}</pre>
+      </div>
       <template #footer>
         <el-button @click="endpointTestDialog = false">关闭</el-button>
         <el-button :loading="endpointTesting" @click="submitEndpointNonStreamTest">非流式测试</el-button>
@@ -331,9 +343,10 @@
 </template>
 
 <script setup lang="ts">
-import { computed, onMounted, reactive, ref } from 'vue'
+import { computed, nextTick, onMounted, reactive, ref } from 'vue'
 import { ElMessage, ElMessageBox } from 'element-plus'
 import { Plus, Refresh, VideoPlay } from '@element-plus/icons-vue'
+import MarkdownPreview from '@/components/MarkdownPreview.vue'
 import {
   deleteAiEndpoint,
   deleteAiProvider,
@@ -344,6 +357,7 @@ import {
   listAiEndpoints,
   listAiProviders,
   listAiScenes,
+  normalizeAiText,
   saveAiEndpoint,
   saveAiProvider,
   saveAiScene,
@@ -369,6 +383,7 @@ const testing = ref(false)
 const testResult = ref<AiRuntimeTestResponse | null>(null)
 const nonStreamResult = ref<AiRuntimeTestResponse | null>(null)
 const testInputsJson = ref('{\n  "prompt": "请用一句中文回复测试成功。"\n}')
+const sceneOutputRef = ref<HTMLElement | null>(null)
 
 const endpointTestDialog = ref(false)
 const endpointTesting = ref(false)
@@ -377,6 +392,7 @@ const endpointTestResult = ref<AiRuntimeTestResponse | null>(null)
 const endpointNonStreamResult = ref<AiRuntimeTestResponse | null>(null)
 const endpointInputsJson = ref('{}')
 const endpointParamFields = ref<TestParamField[]>([])
+const endpointOutputRef = ref<HTMLElement | null>(null)
 
 const paramDefinitions = ref<ParamDefinition[]>([])
 
@@ -448,6 +464,19 @@ function statusLabel(status?: string) {
   return status ? map[status] || status : '-'
 }
 
+function testOutput(result?: AiRuntimeTestResponse | null) {
+  return normalizeAiText(result?.output || result?.errorMessage || '暂无输出')
+}
+
+function scrollOutput(target: { value: HTMLElement | null }) {
+  nextTick(() => {
+    const element = target.value
+    if (element) {
+      element.scrollTop = element.scrollHeight
+    }
+  })
+}
+
 async function loadAll() {
   loading.value = true
   try {
@@ -757,6 +786,7 @@ async function submitRuntimeTest() {
     await streamAiRuntime({ sceneCode: testForm.sceneCode, inputs }, (event, output) => {
       if (!testResult.value) return
       testResult.value.output = output
+      scrollOutput(sceneOutputRef)
       if (event.type === 'delta') {
         testResult.value.streamChunks = (testResult.value.streamChunks || 0) + 1
       }
@@ -831,6 +861,7 @@ async function submitEndpointStreamTest() {
     await streamEndpointRuntime({ endpointId: endpointTestRow.value.id!, inputs }, (event, output) => {
       if (!endpointTestResult.value) return
       endpointTestResult.value.output = output
+      scrollOutput(endpointOutputRef)
       if (event.type === 'delta') {
         endpointTestResult.value.streamChunks = (endpointTestResult.value.streamChunks || 0) + 1
       }
@@ -975,7 +1006,16 @@ onMounted(loadAll)
   background: rgba(0, 0, 0, 0.22);
   border: 1px solid rgba(255, 255, 255, 0.08);
   border-radius: var(--ls-radius-md);
+}
+
+.plain-output {
+  margin: 0;
+  color: rgba(226, 232, 240, 0.92);
+  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
+  font-size: 13px;
+  line-height: 1.7;
   white-space: pre-wrap;
+  word-break: break-word;
 }
 
 .endpoint-info {