feat: add Pro tier license validation and download routing

cloakbrowser/__init__.py

@@ -14,6 +14,7 @@ Usage:
 from .browser import launch, launch_async, launch_context, launch_context_async, launch_persistent_context, launch_persistent_context_async, ProxySettings, build_args, maybe_resolve_geoip
 from .config import CHROMIUM_VERSION, get_default_stealth_args
 from .download import binary_info, check_for_update, clear_cache, ensure_binary
+from .license import LicenseInfo, validate_license
 from ._version import __version__
 
 # Human-like behavioral layer (optional)
@@ -44,6 +45,8 @@ __all__ = [
     "build_args",
     "maybe_resolve_geoip",
     "ProxySettings",
+    "validate_license",
+    "LicenseInfo",
     "HumanConfig",
     "resolve_human_config",
     "__version__",