feat(chat): add configurable streaming output

ai_knowledge_base_v2/apps/admin-web/src/components/AgentManagementView.vue

@@ -50,6 +50,7 @@ const runtimeForm = reactive({
   presencePenalty: null as number | null,
   frequencyPenalty: null as number | null,
   maxToken: 8192 as number | null,
+  streamEnabled: 1,
 });
 
 const promptDirty = computed(() => promptContent.value !== savedPromptContent.value);
@@ -104,6 +105,7 @@ function applyRuntimeConfig(value: AgentRuntimeConfig) {
     presencePenalty: value.presencePenalty,
     frequencyPenalty: value.frequencyPenalty,
     maxToken: value.maxToken,
+    streamEnabled: value.streamEnabled,
   });
 }
 
@@ -132,6 +134,7 @@ async function saveRuntimeConfig() {
       presencePenalty: runtimeForm.presencePenalty,
       frequencyPenalty: runtimeForm.frequencyPenalty,
       maxToken: runtimeForm.maxToken,
+      streamEnabled: runtimeForm.streamEnabled,
     });
     applyRuntimeConfig(saved);
     const model = models.value.find((item) => item.id === saved.modelId);
@@ -368,6 +371,21 @@ function errorMessage(error: unknown, fallback: string) {
                 v-model:max-token="runtimeForm.maxToken"
                 :disabled="!runtimeConfig?.modelId"
               />
+              <el-form-item class="agent-stream-setting">
+                <div class="agent-stream-setting-copy">
+                  <strong>用户端流式输出</strong>
+                  <span>开启后回答正文会边生成边展示；关闭后等待模型完成，再一次性显示完整回答。</span>
+                </div>
+                <el-switch
+                  v-model="runtimeForm.streamEnabled"
+                  :active-value="1"
+                  :inactive-value="0"
+                  active-text="开启"
+                  inactive-text="关闭"
+                  inline-prompt
+                  :disabled="!runtimeConfig?.modelId"
+                />
+              </el-form-item>
             </section>
           </el-form>
         </el-tab-pane>