chore(config): switch editor aliases to nvim and update related settings

dot_config/fish/conf.d/10-env.fish

@@ -17,6 +17,9 @@ set -gx EGET_BIN $HOME/.local/bin
 set -gx GHQ_ROOT $HOME/Code
 set -gx CODE_ROOT $HOME/Code
 
+set -gx EDITOR nvim
+set -gx VISUAL nvim
+
 # Go env (GOPATH/GOBIN) is pinned in ~/.config/mise/config.toml [env] because
 # mise's fish hook re-applies env each prompt and would clobber a shell-set
 # GOBIN. GOROOT is provided by mise (toolchain under ~/.local/share/mise).

dot_config/fish/conf.d/20-aliases.fish

@@ -4,6 +4,7 @@
 
 # Editors / file managers
 alias e nvim
+alias vim nvim
 alias e.f 'cd ~/.local/share/chezmoi/dot_config/fish && yazi'
 alias e.h 'cd ~/.local/share/chezmoi/dot_config/hypr && yazi'
 alias e.k 'yazi ~/.local/share/chezmoi/dot_config/kitty'

dot_config/fish/conf.d/40-tools.fish

@@ -25,3 +25,4 @@ test -f ~/.hishtory/config.fish; and source ~/.hishtory/config.fish
 # unsloth studio python venv
 test -f ~/.unsloth/studio/unsloth_studio/bin/activate.fish
     and source ~/.unsloth/studio/unsloth_studio/bin/activate.fish
+