Add Ghostty backend support

[rytswd]

Similar to Kitty and WezTerm, I would love to have Ghostty support. I'm not sure if Ghostty has all the setup to allow a similar integration, but I would assume some basic integration should be possible.

I will be taking a look if this can be done from my end, and send over a PR if feasible!

[rytswd]

I checked more into this, but it's likely going to require more upstream changes in Ghostty first to suffice workmux's potential to the fullest. I took a spin with bunch of agents testing out Ghostty integration possibilities and capabilities:

Feasibility Assessment

This is partially feasible for a real backend, but with significant limitations compared to WezTerm/Kitty. The D-Bus approach could:

• ✅ Create new tabs/windows with commands
• ✅ Split panes
• ✅ Focus windows/tabs
• ✅ Close tabs
• ⚠️ Send text (only to focused surface)
• ❌ List/query individual panes
• ❌ Send text to specific unfocused panes
• ❌ Capture pane content programmatically

--

Those unsupported actions would make workmux inefficient, or even pointless. I think we would need to close this for now, and revisit when Ghostty has more programmatic interaction support.

[raine]

Hi. Thanks for looking into this. Ghostty support is on my radar but as it's quite new I've figured it's not quite there yet.

❌ List/query individual panes
❌ Send text to specific unfocused panes

I think these two would have to work for it to be usable. Or maybe sending text to only the focused pane might work still.