fix(knowledge): bind summary cards to cited evidence

frontend/src/views/system/model/index.vue

@@ -262,7 +262,7 @@
           </el-select>
         </el-form-item>
         <el-form-item label="模型名称" required>
-          <el-input v-model="modelForm.modelName" placeholder="deepseek-chat" />
+          <el-input v-model="modelForm.modelName" placeholder="deepseek-v4-flash" />
         </el-form-item>
         <el-form-item label="供应商" required>
           <el-select v-model="modelForm.providerCode">
@@ -460,7 +460,7 @@ const seedModels: ModelConfig[] = [
   {
     id: -1,
     category: 'chat',
-    modelName: 'deepseek-chat',
+    modelName: 'deepseek-v4-flash',
     providerCode: 'deepseek',
     modelDescribe: '用于通用对话与 RAG 生成',
     modelShow: 'Y',