Implement gestures on macOS

[pszypowicz]

What do you want to change?

I would like to address macos gestures in the most native to macos way - with defaults that feel "right" - but with the flexibility for the power usage to get what they want / how they want it

Why do you want to make this change?

I am a DevOps / System Admin practically living in the TMUX. And now with Claude I was discovering that the slowest part of my workflow was basically my concurrency management of handling parallel sessions. That led me to optimize my TMUX and now ghostty.

I love MacOS gestures feel and Trackpad, and was incorporating it into some stupid workarounds in stupid places - ghostty sending horizontal mouse scroll to tmux, so tmux was doing some translations of this into commands to switch session Windows tabs. Madness.

The only good place for it is the native support in Ghostty. While working on PoC for gestures I developed TrackpadKit - it holds both Swift Lib for gestures but also "gesture-lab". I created it because i wanted to independently iterate Trackpad before i attempted to make it into Ghostty.

Now I have a PoC Ghostty implementation: pszypowicz#5 with small announcement discussion: #13442

But I would love to - in small increments start to contribute it to the upstream.

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