fix(frontend): 修复智能定位不处理 navigate 步骤的问题

1. 取消过滤 navigate 步骤，允许发送到智能定位 API
2. 正确更新步骤参数：合并 params 而非只更新 selector
3. 支持 navigate 步骤的 url 参数自动填充
Co-Authored-By: Claude <noreply@anthropic.com>

frontend/src/views/Cases.vue

@@ -998,9 +998,9 @@ const batchLocate = async () => {
       return
     }
 
-    // 2. 转换步骤为智能定位格式
+    // 2. 转换步骤为智能定位格式（包含 navigate 步骤）
     const smartLocateSteps = steps
-      .filter((s: any) => s.action && s.action !== 'navigate')
+      .filter((s: any) => s.action)
       .map((s: any) => ({
         order: s.order,
         name: s.name || '',
@@ -1029,15 +1029,20 @@ const batchLocate = async () => {
         const locateResult = result.results.find(
           (r: any) => r.order === s.order && r.success
         )
-        if (locateResult && locateResult.selectors?.primary) {
+        if (locateResult) {
+          const updatedParams = {
+            ...(s.params || {}),
+            ...(locateResult.params || {}),
+          }
+          // 如果有 selector，更新选择器
+          if (locateResult.selectors?.primary) {
+            updatedParams.selector = locateResult.selectors.primary
+          }
           return {
             ...s,
-            params: {
-              ...(s.params || {}),
-              selector: locateResult.selectors.primary,
-            },
+            params: updatedParams,
             locator_type: 'css',
-            locator_value: locateResult.selectors.primary,
+            locator_value: locateResult.selectors?.primary || '',
           }
         }
         return s