feat(S5): prompt effect verification - test generated prompt against LLM

- Backend: POST /api/prompt/test uses generated prompt as system_prompt
- Frontend: test input card, run test button, output display
- testPrompt API module with typed response

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/flask_prompt_master/routes/routes.py

@@ -529,6 +529,35 @@ def delete_template(template_id):
         }), 500
 
 # 添加微信小程序API路由
+@main_bp.route('/api/prompt/test', methods=['POST'])
+def api_prompt_test():
+    """用生成的提示词 + 测试输入实际调用 LLM，查看效果"""
+    data = request.get_json(silent=True) or {}
+    prompt_text = (data.get('prompt_text') or '').strip()
+    test_input = (data.get('test_input') or '').strip()
+    if not prompt_text:
+        return jsonify({'success': False, 'message': '缺少提示词内容'}), 400
+    if not test_input:
+        return jsonify({'success': False, 'message': '请输入测试内容'}), 400
+
+    try:
+        response = client.chat.completions.create(
+            model='deepseek-chat',
+            messages=[
+                {'role': 'system', 'content': prompt_text},
+                {'role': 'user', 'content': test_input},
+            ],
+            temperature=0.7,
+            max_tokens=1000,
+            timeout=60,
+        )
+        test_output = response.choices[0].message.content.strip()
+        return jsonify({'success': True, 'test_output': test_output})
+    except Exception as e:
+        current_app.logger.error(f'prompt_test error: {e}')
+        return jsonify({'success': False, 'message': f'测试调用失败: {str(e)}'}), 500
+
+
 @main_bp.route('/api/wx/generate', methods=['POST'])
 def wx_generate_prompt():
     """微信小程序生成提示词接口"""

vue-app/src/api/modules/prompt.ts

@@ -27,6 +27,16 @@ export interface ContinuePromptResponse {
   prompt?: { id: number; input_text: string; generated_text: string }
 }
 
+export interface TestPromptResponse {
+  success: boolean
+  message?: string
+  test_output?: string
+}
+
+export function testPrompt(body: { prompt_text: string; test_input: string }) {
+  return client.post<TestPromptResponse>('/api/prompt/test', body).then((r) => r.data)
+}
+
 export function continuePrompt(body: {
   conversation_id?: number | null
   previous_result: string

vue-app/src/views/GenerateView.vue

@@ -1,7 +1,7 @@
 <script setup lang="ts">
 import { computed, onMounted, ref, watch } from 'vue'
 import { useRouter } from 'vue-router'
-import { fetchGenerateMeta, fetchTemplatesByCategory, generatePrompt, continuePrompt } from '@/api/modules/prompt'
+import { fetchGenerateMeta, fetchTemplatesByCategory, generatePrompt, continuePrompt, testPrompt } from '@/api/modules/prompt'
 import { quickAddFavorite } from '@/api/modules/favorite'
 import type { PromptTemplateItem } from '@/api/types/template'
 import { ArrowDownBold } from '@element-plus/icons-vue'
@@ -37,6 +37,37 @@ const rounds = ref(0)
 const refineInstruction = ref('')
 const refining = ref(false)
 
+const testing = ref(false)
+const testInput = ref('')
+const testOutput = ref<string | null>(null)
+
+async function onTestPrompt() {
+  if (!result.value) return
+  const input = testInput.value.trim()
+  if (!input) {
+    ElMessage.warning('请输入测试内容')
+    return
+  }
+  testing.value = true
+  testOutput.value = null
+  try {
+    const res = await testPrompt({
+      prompt_text: result.value.generated_text,
+      test_input: input,
+    })
+    if (!res.success) {
+      ElMessage.error(res.message || '测试失败')
+      return
+    }
+    testOutput.value = res.test_output ?? null
+    ElMessage.success('测试完成')
+  } catch {
+    ElMessage.error('测试请求失败')
+  } finally {
+    testing.value = false
+  }
+}
+
 const router = useRouter()
 
 const selectedTemplate = computed(
@@ -493,6 +524,32 @@ onMounted(async () => {
         </el-space>
       </div>
     </el-card>
+
+    <el-card v-if="result" shadow="never" class="section test-card">
+      <template #header>
+        <span>测试效果</span>
+        <span class="hint" style="margin-left: 8px; font-weight: normal; font-size: 0.85rem">
+          将生成的提示词实际执行一次，查看 LLM 输出（消耗一次 API 调用）
+        </span>
+      </template>
+      <el-input
+        v-model="testInput"
+        type="textarea"
+        :rows="3"
+        maxlength="500"
+        show-word-limit
+        placeholder="输入测试内容，如：请写一个 Python 排序函数"
+      />
+      <div class="actions">
+        <el-button type="warning" plain :loading="testing" @click="onTestPrompt">
+          运行测试
+        </el-button>
+      </div>
+      <el-card v-if="testOutput" shadow="never" class="test-output">
+        <template #header>测试输出</template>
+        <pre class="result-pre">{{ testOutput }}</pre>
+      </el-card>
+    </el-card>
   </div>
 </template>