🐞 macOS Tahoe Workspace Window

On macOS Tahoe the new liquid glass breaks a significant number of UI elements. This list is specifically for *urgent* fixes that break functionality. I'm going to create new issues for design changes that need more consideration.

Items to fix:
- [ ] Workspace name & git branch widget
- [ ] Navigator toggle and run buttons should be a part of the navigator pane.
- [ ] Activity viewer needs to have its grey background removed.
- [ ] Diagnostics / notifications toolbar item needs to be it's own item.
- [ ] Navigator and inspector buttons should be round. Toolbar might need to be slightly taller.
- [ ] Navigator filter input should be rounder and have more spacing around it.
- [ ] Stop button no longer disappears entirely, just fades to disabled state.
- [ ] Navigator sidebar should extend to the top of the window instead of under the toolbar
- [ ] Navigator tab bar should be more distinct, with a background and rounded corners. It should still align vertically with the tab bar though.
- [ ] Activity viewer sub-menus need to be swapped to NSMenu's or use better rounding. Details

- [ ] Text settings in inspector need adjusted. Details

- [ ] Selected navigator item's text color is incorrect. Details

- [ ] Some menu items with icons don't respond to selection. They should be white when in the selected state. Details

A quick screen cap from Tahoe: