fix: unify row open labels and silent success

Rename 打开文件位置 to 打开目录, and print empty SAS message so the host skips 执行成功 after opening Explorer or the browser.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_browser_open.py

@@ -70,6 +70,9 @@ class TestCmdOpenDirectBrowser:
         payload = json.loads(out.splitlines()[-1])
 
         assert payload["success"] is True
+        assert payload["message"] == ""
+        assert payload["type"] == "result"
+        assert payload["status"] == "success"
         assert payload["data"]["pid"] == 5252
         assert payload["data"]["browser_exe"] == fake_exe
         assert spawned["cmd"][0] == fake_exe