refactor: switch to catppuccin mocha across tmux and neovim

- tmux: hand-rolled catppuccin theme, three-way status bar toggle, plugin cleanup
- nvim: switch colorscheme to catppuccin-mocha, update lualine colors
- nvim: add tmuxline.vim for tmux statusline generation
- kitty: fix MesloLGS NF font typo, remove deprecated config keys

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

yazi/plugins/jump-to-char.yazi/README.md

@@ -21,7 +21,7 @@ run  = "plugin jump-to-char"
 desc = "Jump to char"
 ```
 
-Make sure the <kbd>f</kbd> key is not used elsewhere.
+Note that, the keybindings above are just examples, please tune them up as needed to ensure they don't conflict with your other commands/plugins.
 
 ## License