Change the query history popup layout to nvim style split layout from the stacked layout

[amankhandelia]

Hi @Maxteabag

I am proposing this change to improve the ui/ux of historical search, which in my experience improves navigating large queries (I am been using this for the past week since I have added this code to repo in my dev flow), specially with keyboard-only workflow, I have attached the video and screenshots my new ui, let me know your feedback on this how do you feel about it.

Proposed Change:

• Instead of using a stacked layout for query history dialog box let's use a side by side one, as often happens that the query might only differ slightly and you want to check which one is that you want to select and hence the scroll the preview pane,
• previously, preview pane was very small before which does not allows for proper walkthrough of the old queries

Evidence:
before

after

for long queries

here is a video demo (key press can be seen at the bottom)
https://github.com/user-attachments/assets/ee87b07e-d2ba-459a-a627-e20dedd677e6

Caveats:

• This is my first time making ui/ux changes to TUI app, so any feedback, critical or otherwise is appreciated
• This work was done completely with the assistance of Coding Agent (Codex: GPT-6-Astra), I have read the code, and made minor cleanups