v0.6.8b1

Added

• Intelligent browser restart (BROWSER_RESTART_AFTER_BANS)
  The browser engine now restarts Chrome (fresh fingerprint, cookies, and CDP session) only
  when it actually needs to — after BROWSER_RESTART_AFTER_BANS (default 5) consecutive
  responses are classified as banned or challenged by AntiBotDetector. A single clean
  response resets the streak to zero, so a browser sailing through cleanly is never restarted,
  no matter how many requests it has served. Replaces the previous fixed-count
  BROWSER_RESTART_EVERY restart, which fired blindly every N requests regardless of whether
  anything was actually going wrong.
  Implemented via a small BanStreakTracker helper in utils/browser.py.

Fixed

• Browser engine — restart/teardown race on Windows
  _reset_browser() now waits for the old event loop's thread to fully stop (_stop_loop())
  before starting a new loop and thread. Previously the old ProactorEventLoop could keep
  polling its selector after the replacement loop was already running, surfacing as an
  InvalidStateError crash or unretrieved OSError task exceptions on Windows.