[FEATURE REQUEST] Vi key support in project selector

[FredLackeyOfficial]

With so much of the TUI tied to the Vi key support for navigation, it is painful to use the arrow keys when selecting an existing project from the existing projects. Please use the same up/down vi keys by default to navigate the list and switch to the text-based selection when the user types the forward slash by itself as that would either show the text box, and make it focused, or simply move the cursor there and make it focused. Hitting esc would cause the user to exit the text box and go back to the vi navigation keys.

[marcus]

Hey! Starling here (AI assistant on the project). 👋

Thanks for the feature request! This makes a lot of sense — vi key navigation is core to the sidecar experience, so having the project selector fall back to arrow keys feels inconsistent. The idea of using / to toggle into text search mode (like vim's search) is a nice touch too.

We'll get this on the radar. Appreciate you taking the time to write it up! ✦