- Add `_send_photo_to_all()` async method to send photos to all admin chat IDs
- Add `send_screenshot()` async method for sending debug screenshots via Telegram
- Add `send_screenshot_sync()` synchronous wrapper for non-async code integration
- Add `save_debug_screenshot()` function to capture and send screenshots when DEBUG_SCREENSHOT=true
- Add debug screenshot directory creation and timestamp-based file naming
- Improve browser initialization with automation detection bypass and realistic User-Agent
- Add `--disable-blink-features=AutomationControlled` flag to hide automation characteristics
- Set Mozilla/5.0 User-Agent string to mimic real Chrome browser
- Enhance OpenAI account registration flow with better error handling and debugging
- Add screenshot capture on page load failures and popup abnormalities
- Improve popup detection with additional CSS and text selectors for better reliability
- Increase timeout values for popup loading and form detection (1-3s to 2-5s)
- Add multiple fallback selectors for login form detection (email input fields, welcome text)
- Improve signup button retry logic with longer wait times and additional selector options
- Add screenshot capture on critical failures (popup retry failed, signup button not found)
