Upgrade issue #21 handling by adding the current Chinese xAI cookie-banner labels and complete Allow-all English variants while preserving exact-match clicking and existing OAuth boundaries.
Expand only the `_dismiss_cookie_banner()` exact-match label tuple to recognize `Accept All Cookies` and `Accept all cookies`, fixing issue #21 without changing OAuth, Turnstile, timing, browser, logging, or click behavior.
Rewrite the module-level descriptions for all 28 Python files and remove the obsolete integration note from grok_register_ttk.py. Verified on Python 3.9 and Python 3.12.
