fix: open account browser maximized without Chrome first-run

Human open now uses start-maximized and no-first-run flags, and profile shortcuts share the same args plus the platform URL.

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

tests/test_browser_open.py

@@ -77,13 +77,42 @@ class TestCmdOpenDirectBrowser:
         assert payload["data"]["browser_exe"] == fake_exe
         assert spawned["cmd"][0] == fake_exe
         assert spawned["cmd"][1].startswith("--user-data-dir=")
-        assert spawned["cmd"][2] == "https://example.com"
+        assert "--start-maximized" in spawned["cmd"]
+        assert "--no-first-run" in spawned["cmd"]
+        assert "--no-default-browser-check" in spawned["cmd"]
+        assert "--disable-search-engine-choice-screen" in spawned["cmd"]
+        assert spawned["cmd"][-1] == "https://example.com"
+        assert "--enable-automation" not in spawned["cmd"]
         # must NOT spawn python / open_child_runner
         joined = " ".join(spawned["cmd"])
         assert "open_child_runner" not in joined
         assert "python" not in joined.lower()
 
 
+class TestHumanChromeLaunchArgs:
+    def test_flags_then_url(self, tmp_path):
+        from service.browser_service import HUMAN_CHROME_FLAGS, human_chrome_launch_args
+
+        profile = str(tmp_path / "prof")
+        args = human_chrome_launch_args(profile, "https://chat.deepseek.com")
+        assert args[0].startswith("--user-data-dir=")
+        for flag in HUMAN_CHROME_FLAGS:
+            assert flag in args
+        assert args[-1] == "https://chat.deepseek.com"
+        assert "--enable-automation" not in args
+
+    def test_shortcut_arguments_quote_profile_and_include_url(self, tmp_path):
+        from service.browser_service import human_chrome_shortcut_arguments
+
+        profile = tmp_path / "my prof"
+        profile.mkdir()
+        text = human_chrome_shortcut_arguments(str(profile), "https://example.com")
+        assert '--user-data-dir="' in text
+        assert "--start-maximized" in text
+        assert "--no-first-run" in text
+        assert text.endswith("https://example.com")
+
+
 class TestResolveChromiumChannel:
     """resolve_chromium_channel returns a channel string when browsers exist."""
 

tests/test_profile_shortcut.py

@@ -31,6 +31,33 @@ class TestCreateProfileBrowserShortcut:
         out = create_profile_browser_shortcut(str(tmp_path), "demo")
         assert out is None
 
+    def test_windows_lnk_uses_human_chrome_args(self, tmp_path, monkeypatch) -> None:
+        captured = {}
+
+        def fake_run(argv, **kwargs):
+            captured["argv"] = list(argv)
+            class Result:
+                returncode = 0
+            return Result()
+
+        monkeypatch.setattr("util.profile_shortcut.sys.platform", "win32")
+        monkeypatch.setattr(
+            "util.profile_shortcut.resolve_chromium_executable",
+            lambda: r"C:\Program Files\Google\Chrome\Application\chrome.exe",
+        )
+        monkeypatch.setattr("util.profile_shortcut.subprocess.run", fake_run)
+        monkeypatch.setattr("util.profile_shortcut.os.path.isfile", lambda path: True)
+
+        out = create_profile_browser_shortcut(
+            str(tmp_path), "demo", url="https://chat.deepseek.com",
+        )
+        assert out is not None
+        ps = captured["argv"][-1]
+        assert "--start-maximized" in ps
+        assert "--no-first-run" in ps
+        assert "https://chat.deepseek.com" in ps
+        assert "--enable-automation" not in ps
+
     @pytest.mark.skipif(sys.platform != "win32", reason="Windows .lnk only")
     def test_creates_lnk_on_windows(self, tmp_path, monkeypatch) -> None:
         from service.browser_service import resolve_chromium_executable