Fix keyboard input not working on Firefox/Safari (#507)

[jfuginay]

Problem

Users reported being unable to type anything when using Firefox on Mac, as well as Safari on various platforms. This was a critical issue affecting cross-browser compatibility.

Root Cause

The issue was caused by multiple factors:

1. DirectKeyboardManager interference: The DirectKeyboardManager was creating a hidden input element even on desktop browsers, which could steal focus from the terminal
2. Focus management: Firefox/Safari handle focus differently than Chrome, and the session-view element wasn't getting focus properly
3. Event target detection: The keyboard event handler wasn't properly checking for null/undefined targets in Firefox/Safari

Solution

1. Fixed DirectKeyboardManager

• Removed automatic creation of hidden input on initialization
• Hidden input is now only created when actually needed (for mobile devices)
• This prevents the hidden input from interfering with keyboard events on desktop

2. Improved Focus Management

• Added immediate focus to session-view element when lifecycle is set up
• Ensures keyboard events are properly captured in Firefox/Safari
• Added slight delay to keyboard event listener attachment for DOM readiness

3. Enhanced Browser Compatibility

• Fixed event target detection to handle null/undefined cases
• Added optional chaining for better browser support
• Improved closest() method checks with fallback for older browsers

4. Added Debugging

• Added logging to help diagnose keyboard event issues
• Logs key events, target element, and active element for troubleshooting

Testing

✅ Confirmed working by author:

• Keyboard input now works on Firefox (Mac)
• Keyboard input now works on Safari (Mac)
• Chrome functionality remains unchanged
• Mobile keyboard handling is preserved

Screenshots

The author has screenshots confirming the fix works on both Firefox and Safari.

Fixes

Closes #507

[jfuginay]

I think we got off on the wrong foot. Just a dude genuinely trying to help.

[jfuginay]

Link to dmg I compiled to test my fix locally:

https://drive.google.com/file/d/1jU_xvcUJd4xmKtsu7UrA8wFMk8NLePKF/view?usp=drive_link