feat: async score jobs — POST /api/score/async + 评分记录 page

Each async score job:
- Runs InlineScorer.score() in thread pool
- Writes standard run artifacts (metadata.json, scores.csv, summary.md)
- Runs optimization_advisor => optimization_advice.md
- Result appears in 运行列表 and 报告详情 with full report

New endpoints:
- POST /api/score/async  (202, job_id immediate)
- GET  /api/score/jobs   (list all jobs)
- GET  /api/score/jobs/{id} (single job status)

Frontend:
- 评分记录 nav page with card list
- 5s auto-polling for queued/running jobs
- 查看报告 button navigates to existing 报告详情 page

Dify: change /api/score -> /api/score/async, no response parsing needed

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

webapp/static/index.html

@@ -28,6 +28,9 @@
         <button class="nav-item" data-view="profiles">
           <span class="nav-ico">⚙</span><span>LLM 配置</span>
         </button>
+        <button class="nav-item" data-view="scorejobs">
+          <span class="nav-ico">📋</span><span>评分记录</span>
+        </button>
         <button class="nav-item" data-view="apidocs">
           <span class="nav-ico">⎔</span><span>API 文档</span>
         </button>
@@ -234,6 +237,22 @@
         </div>
       </section>
 
+      <!-- 评分记录视图 -->
+      <section class="view" id="view-scorejobs" hidden>
+        <div class="panel">
+          <div class="panel-head">
+            <h2>评分记录</h2>
+            <span class="muted" style="font-size:13px">来自 Dify 异步评分任务（POST /api/score/async）</span>
+          </div>
+          <p class="muted">评分完成后自动生成完整报告（含指标得分与 LLM 优化建议），点击「查看报告」跳转报告详情页。</p>
+        </div>
+        <div id="scorejobs-list"></div>
+        <div class="empty" id="scorejobs-empty" hidden>
+          <p>暂无评分记录。</p>
+          <p class="muted">在 Dify 工作流中调用 <code>POST /api/score/async</code> 后，记录将在此显示。</p>
+        </div>
+      </section>
+
       <!-- API 文档视图 -->
       <section class="view" id="view-apidocs" hidden>
         <iframe
@@ -251,6 +270,7 @@
   <script src="/static/js/report.js"></script>
   <script src="/static/js/profiles.js"></script>
   <script src="/static/js/runner.js"></script>
+  <script src="/static/js/score_jobs.js"></script>
   <script src="/static/js/app.js"></script>
 </body>
 </html>