test: expand browser command coverage

- Add mocked Click CLI tests across DOM, cookies, page, storage, perf, navigation, tabs, groups, sessions, and windows commands.
- Cover integration paths for cookies, page info, performance profiles, and web storage commands.
- Extend DOM integration coverage for eval, scrolling, waiting, focus, hover, typing, selection, keyboard, and checkbox interactions.
- Add native host unit coverage for message framing, socket helpers, paging guards, timeouts, and profile alias resolution.

tests/test_cookies.py

@@ -0,0 +1,103 @@
+"""Integration tests for cookies.* commands — require a live browser."""
+import time
+
+def test_cookies_list_returns_list(browser, http_tab):
+    """cookies.list returns a list (may be empty on a plain https://example.com)."""
+    browser("tabs.active", {"tabId": http_tab["id"]})
+    cookies = browser("cookies.list", {})
+    assert isinstance(cookies, list)
+
+def test_cookies_list_has_required_fields(browser, http_tab):
+    """Every cookie returned has at least name, domain and path fields."""
+    browser("tabs.active", {"tabId": http_tab["id"]})
+    # Set a known cookie so the list is non-empty
+    browser("cookies.set", {
+        "url": "https://example.com",
+        "name": "__pytest_field_check",
+        "value": "1",
+    })
+    cookies = browser("cookies.list", {"url": "https://example.com"})
+    assert isinstance(cookies, list)
+    assert len(cookies) > 0
+    for c in cookies:
+        assert "name" in c
+        assert "domain" in c
+        assert "path" in c
+
+def test_cookies_set_and_list(browser, http_tab):
+    """Set a cookie and verify it appears in the list."""
+    browser("tabs.active", {"tabId": http_tab["id"]})
+    cookie_name = "__pytest_set_test"
+    cookie_value = "hello-pytest"
+
+    browser("cookies.set", {
+        "url": "https://example.com",
+        "name": cookie_name,
+        "value": cookie_value,
+    })
+
+    cookies = browser("cookies.list", {"url": "https://example.com"})
+    found = next((c for c in cookies if c.get("name") == cookie_name), None)
+    assert found is not None, f"Cookie '{cookie_name}' not found after set"
+    assert found["value"] == cookie_value
+
+def test_cookies_get(browser, http_tab):
+    """Get a single cookie by URL + name."""
+    browser("tabs.active", {"tabId": http_tab["id"]})
+    name = "__pytest_get_test"
+    value = "get-value-42"
+
+    browser("cookies.set", {"url": "https://example.com", "name": name, "value": value})
+
+    cookie = browser("cookies.get", {"url": "https://example.com", "name": name})
+    assert cookie is not None
+    assert cookie.get("value") == value
+
+def test_cookies_get_missing_returns_none(browser, http_tab):
+    """Getting a non-existent cookie returns None."""
+    browser("tabs.active", {"tabId": http_tab["id"]})
+    cookie = browser("cookies.get", {
+        "url": "https://example.com",
+        "name": "__pytest_no_such_cookie_zzz",
+    })
+    assert cookie is None
+
+def test_cookies_list_filter_by_domain(browser, http_tab):
+    """Filtering by domain only returns matching cookies."""
+    browser("tabs.active", {"tabId": http_tab["id"]})
+    browser("cookies.set", {
+        "url": "https://example.com",
+        "name": "__pytest_domain_filter",
+        "value": "yes",
+    })
+    cookies = browser("cookies.list", {"domain": "example.com"})
+    assert isinstance(cookies, list)
+    for c in cookies:
+        assert "example.com" in c.get("domain", "")
+
+def test_cookies_list_filter_by_name(browser, http_tab):
+    """Filtering by name only returns cookies with that name."""
+    browser("tabs.active", {"tabId": http_tab["id"]})
+    name = "__pytest_name_filter_unique"
+    browser("cookies.set", {"url": "https://example.com", "name": name, "value": "y"})
+
+    cookies = browser("cookies.list", {"name": name})
+    assert isinstance(cookies, list)
+    assert len(cookies) > 0
+    for c in cookies:
+        assert c["name"] == name
+
+def test_cookies_set_with_secure_flag(browser, http_tab):
+    """Setting a cookie with secure=True persists the secure attribute."""
+    browser("tabs.active", {"tabId": http_tab["id"]})
+    name = "__pytest_secure_cookie"
+    browser("cookies.set", {
+        "url": "https://example.com",
+        "name": name,
+        "value": "secured",
+        "secure": True,
+    })
+    cookies = browser("cookies.list", {"url": "https://example.com", "name": name})
+    found = next((c for c in cookies if c["name"] == name), None)
+    assert found is not None
+    assert found.get("secure") is True