feat: open browser with stable CDP port for scrape attach

tests/test_browser_open.py

@@ -193,6 +193,7 @@ class TestHumanChromeLaunchArgs:
         for flag in HUMAN_CHROME_FLAGS:
             assert flag in args
         assert "--restore-last-session" not in args
+        assert any(a.startswith("--remote-debugging-port=") for a in args)
         assert args[-1] == "https://chat.deepseek.com"
         assert "--enable-automation" not in args
 
@@ -201,6 +202,7 @@ class TestHumanChromeLaunchArgs:
 
         args = human_chrome_launch_args(str(tmp_path / "prof"), None, restore_session=True)
         assert "--restore-last-session" in args
+        assert any(a.startswith("--remote-debugging-port=") for a in args)
         assert not any(a.startswith("http") for a in args)
 
     def test_shortcut_arguments_quote_profile_and_include_url(self, tmp_path):
@@ -213,6 +215,7 @@ class TestHumanChromeLaunchArgs:
         assert "--start-maximized" in text
         assert "--no-first-run" in text
         assert "--restore-last-session" not in text
+        assert "--remote-debugging-port=" in text
         assert text.endswith("https://example.com")
 
     def test_shortcut_restore_session(self, tmp_path):
@@ -220,8 +223,16 @@ class TestHumanChromeLaunchArgs:
 
         text = human_chrome_shortcut_arguments(str(tmp_path / "p"), None, restore_session=True)
         assert "--restore-last-session" in text
+        assert "--remote-debugging-port=" in text
         assert "http" not in text
 
+    def test_cdp_port_stable_for_profile(self, tmp_path):
+        from service.browser_service import cdp_port_for_profile
+
+        p = str(tmp_path / "prof")
+        assert cdp_port_for_profile(p) == cdp_port_for_profile(p)
+        assert 9330 <= cdp_port_for_profile(p) < 9390
+
 
 class TestResolveChromiumChannel:
     """resolve_chromium_channel returns a channel string when browsers exist."""