Summary of the Program and Its Architecture:

1. README.md:
   • Introduces the purpose: to support the Mautrix Google Chat Authentication Process.
   • Details manual steps to log in to https://chat.google.com, inspect browser cookies (COMPASS, SSID, SID, OSID, HSID) using Developer Tools, and form them into a JSON payload that is then sent to a bot to enable automated portal creation in chats.

2. selenium_cookie_extractor_json.py:
   • Uses Selenium with Chrome in incognito mode to open https://chat.google.com.
   • The user is guided to log in and verify the necessary cookies via the browser’s Developer Tools.
   • Once the user presses Enter, the script extracts all cookies, filters for the target cookies (with special handling for the COMPASS cookie by selecting the one with path "/" if present), and then outputs a JSON object with these cookie values.
   • This JSON output can be used in further automation steps with a bot.

3. flake.nix:
   • Provides a Nix development shell configuration which ensures a reproducible environment.
   • Specifies dependencies: Python3, Selenium, and Chromedriver, ensuring that the proper tools are available in the development environment.

Overall Architecture:
   • The repository is architected around a single-purpose automation tool to simplify cookie extraction for Google Chat authentication, with supporting documentation (README.md) and a reproducible development environment (flake.nix).