feat: 收敛知识库检索调度与评分语义

- 固定 rag.engine 与 Milvus 配置，补齐启动期检索基础设施校验

- 支持调用方配置 retrievalMode，并统一知识库检索入口与结果来源展示

- 修正关键词检索 knowledgeId 过滤、混合检索评分归一化与本地 ES 默认配置

easyflow-ui-admin/app/src/views/ai/documentCollection/DocumentCollectionDataConfig.vue

@@ -1,7 +1,7 @@
 <script setup lang="ts">
 import type { FormInstance } from 'element-plus';
 
-import { computed, onMounted, ref, watch } from 'vue';
+import { onMounted, ref, watch } from 'vue';
 
 import { InfoFilled } from '@element-plus/icons-vue';
 import {
@@ -80,29 +80,6 @@ watch(
 
 const embeddingLlmList = ref<any>([]);
 const rerankerLlmList = ref<any>([]);
-const vecotrDatabaseList = ref<any>([
-  { value: 'milvus', label: 'Milvus' },
-  { value: 'redis', label: 'Redis' },
-  { value: 'opensearch', label: 'OpenSearch' },
-  { value: 'elasticsearch', label: 'ElasticSearch' },
-  { value: 'aliyun', label: $t('documentCollection.alibabaCloud') },
-  { value: 'qcloud', label: $t('documentCollection.tencentCloud') },
-]);
-
-const milvusVectorStoreConfigPlaceholder =
-  'uri=http://127.0.0.1:19530\n' +
-  'databaseName=default\n' +
-  'token=\n' +
-  'username=\n' +
-  'password=\n' +
-  'autoCreateCollection=true';
-
-const vectorStoreConfigPlaceholder = computed(() => {
-  return entity.value?.vectorStoreType === 'milvus'
-    ? milvusVectorStoreConfigPlaceholder
-    : '';
-});
-
 const getEmbeddingLlmListData = async () => {
   try {
     const url = `/api/v1/documentCollection/modelList?modelType=embeddingModel`;
@@ -146,15 +123,6 @@ const rules = ref({
     { required: true, message: $t('message.required'), trigger: 'blur' },
   ],
   title: [{ required: true, message: $t('message.required'), trigger: 'blur' }],
-  vectorStoreType: [
-    { required: true, message: $t('message.required'), trigger: 'blur' },
-  ],
-  vectorStoreCollection: [
-    { required: true, message: $t('message.required'), trigger: 'blur' },
-  ],
-  vectorStoreConfig: [
-    { required: true, message: $t('message.required'), trigger: 'blur' },
-  ],
   vectorEmbedModelId: [
     { required: true, message: $t('message.required'), trigger: 'blur' },
   ],
@@ -239,50 +207,6 @@ async function save() {
           :placeholder="$t('documentCollection.placeholder.description')"
         />
       </ElFormItem>
-      <!--      <ElFormItem
-        prop="vectorStoreEnable"
-        :label="$t('documentCollection.vectorStoreEnable')"
-      >
-        <ElSwitch v-model="entity.vectorStoreEnable" />
-      </ElFormItem>-->
-      <ElFormItem
-        prop="vectorStoreType"
-        :label="$t('documentCollection.vectorStoreType')"
-      >
-        <ElSelect
-          v-model="entity.vectorStoreType"
-          :placeholder="$t('documentCollection.placeholder.vectorStoreType')"
-        >
-          <ElOption
-            v-for="item in vecotrDatabaseList"
-            :key="item.value"
-            :label="item.label"
-            :value="item.value || ''"
-          />
-        </ElSelect>
-      </ElFormItem>
-      <ElFormItem
-        prop="vectorStoreCollection"
-        :label="$t('documentCollection.vectorStoreCollection')"
-      >
-        <ElInput
-          v-model.trim="entity.vectorStoreCollection"
-          :placeholder="
-            $t('documentCollection.placeholder.vectorStoreCollection')
-          "
-        />
-      </ElFormItem>
-      <ElFormItem
-        prop="vectorStoreConfig"
-        :label="$t('documentCollection.vectorStoreConfig')"
-      >
-        <ElInput
-          v-model.trim="entity.vectorStoreConfig"
-          :rows="4"
-          type="textarea"
-          :placeholder="vectorStoreConfigPlaceholder"
-        />
-      </ElFormItem>
       <ElFormItem prop="vectorEmbedModelId">
         <template #label>
           <span style="display: flex; align-items: center">
@@ -373,12 +297,6 @@ async function save() {
           />
         </ElSelect>
       </ElFormItem>
-      <ElFormItem
-        prop="searchEngineEnable"
-        :label="$t('documentCollection.searchEngineEnable')"
-      >
-        <ElSwitch v-model="entity.searchEngineEnable" />
-      </ElFormItem>
       <ElFormItem style="margin-top: 20px; text-align: right">
         <ElButton
           type="primary"