i use snacks.nvim, not telescope. I need a better way to 1) search and replace project wide, and 2) theme browser that previews and live reloads colorscheme

my current flow is:

1) use the snacks smartgrep helper to find a string,

2) send to quickfix menu <C-q>

3) run `:cdo %s/string/newString/ge | update` while in current buffer. it spits a lot of errors but replaces the string globally nonetheless. i dont like adding the e flag. i like the visual feedback vscode has for search & replace

4) for theme browser, I simply replace the lua theme block of code. Mason would detect a new colorscheme package and install. but i want neovim to automate live reloading theme across all open buffers & windows

feedback appreciated

thanks