Automatically closes the YouTube Live Chat (Theater Mode or Full Screen).
Key Features:
Auto-Close: Detects when you expand the video and hides the chat automatically.
Manual Trigger: Press Alt + K to force the chat to close instantly (useful for testing).
Technical Details:
Architecture: Uses a postMessage system where the main page ("Commander") detects layout changes and sends a signal to the chat iframe ("Soldier").
Reliability: Implements a 10-second delay to account for variable loading times and slow connections.
Simulation: Simulates a full mouse event sequence (mousedown, mouseup, click) to bypass YouTube's UI event filters.
