fix: 修复处理流程和后台任务问题

- 步骤简要数值显示在每个步骤圆圈下方
- 处理流程抓取网页后保存到内容库
- 修复后台任务结果解析错误

static/css/process.css

@@ -175,55 +175,34 @@
     max-width: 80px;
 }
 
-@keyframes pulse {
-    0%, 100% { transform: scale(1); }
-    50% { transform: scale(1.1); }
-}
-
-/* 步骤简要数值 */
-.steps-summary {
-    display: flex;
-    flex-wrap: wrap;
-    gap: 10px;
-    padding: 12px 15px;
-    background: #f8f9fa;
-    border-radius: 8px;
-    margin-top: 10px;
-}
-
-.step-summary-item {
-    display: flex;
-    align-items: center;
-    gap: 5px;
-    padding: 4px 10px;
-    background: white;
-    border-radius: 4px;
-    font-size: 13px;
-}
-
-.step-summary-item.completed {
+.step-value {
+    font-size: 12px;
+    font-weight: 600;
+    color: #10b981;
+    margin-top: 3px;
+    padding: 2px 6px;
     background: #d1fae5;
+    border-radius: 3px;
 }
 
-.step-summary-item.running {
+.step-node.running .step-value {
+    color: #667eea;
     background: #e0e7ff;
 }
 
-.step-summary-item.failed {
+.step-node.failed .step-value {
+    color: #ef4444;
     background: #fee2e2;
 }
 
-.step-summary-item.skipped {
+.step-node.skipped .step-value {
+    color: #6b7280;
     background: #f3f4f6;
 }
 
-.step-summary-label {
-    color: #666;
-}
-
-.step-summary-value {
-    font-weight: 600;
-    color: #333;
+@keyframes pulse {
+    0%, 100% { transform: scale(1); }
+    50% { transform: scale(1.1); }
 }
 
 /* 操作按钮 */