hermes - 💡(How to fix) Fix fix(tui): TUI not resizing properly - add SIGWINCH fallback

Problem

The Hermes Desktop TUI does not properly handle terminal resize events in all cases. While the code listens for stdout.on('resize') events via Ink's useStdout() hook, certain terminals or environments may not properly emit these events, causing the UI to become misaligned or not redraw after terminal resize.

Root Cause

The resize handling in useMainApp.ts only registered a listener for the Ink stdout object's 'resize' event. There was no fallback for environments where this event doesn't fire reliably.

Solution

Added a SIGWINCH signal listener as a fallback mechanism. The SIGWINCH signal is the standard Unix signal for terminal window size changes.

Changes

File: ui-tui/src/app/useMainApp.ts

1. Added sigwinchHandler function
2. Registered handler with process.on('SIGWINCH', sigwinchHandler)
3. Added cleanup in useEffect return function
4. Wrapped in try-catch for cross-platform compatibility

Testing

1. Run hermes --tui
2. Resize terminal window
3. Verify UI properly redraws

Related Commits

• f63ef74ea: fix(tui): refresh virtual transcript on viewport resize
• 511b8e232: fix(tui): re-check sticky inside resize debounce
• 0277194e3: fix(tui): preserve transcript tail across resizes