Migrate Neovim to lazy.nvim and update dotfiles

- Neovim:
    - Migrate from vim-plug to lazy.nvim.
    - Refactor config (`init.lua`, `config.vim`).
    - Replace Coq with blink.cmp, add CodeCompanion.
- Fish:
    - Add aliases (`cl`, `ai`), env vars (`ANDROID_HOME`, `PYENV`).
    - Update keybindings and conditional tool initialization (starship, zoxide, fzf, pyenv).
    - Refine ASDF/Homebrew setup.
- Git: Add aliases (`rs`, `rss`, `ap`).
- Other: Update SKHD bindings and WezTerm path/settings.

.config/fish/functions/import_sources.fish

@@ -1,10 +1,27 @@
 function import_sources -a uname -d 'Loads any additional fish files needed at init.'
     test -f ~/.asdf/plugins/dotnet-core/set-dotnet-home.fish; and source ~/.asdf/plugins/dotnet-core/set-dotnet-home.fish
 
-    test -e ~/.asdf/asdf.fish
-    and source ~/.asdf/asdf.fish
-    and mkdir -p ~/.config/fish/completions
-    and ln -sf ~/.asdf/completions/asdf.fish ~/.config/fish/completions
+    # ASDF configuration code
+    if test -z $ASDF_DATA_DIR
+        set _asdf_shims "$HOME/.asdf/shims"
+    else
+        set _asdf_shims "$ASDF_DATA_DIR/shims"
+    end
+
+    # Do not use fish_add_path (added in Fish 3.2) because it
+    # potentially changes the order of items in PATH
+    if not contains $_asdf_shims $PATH
+        set -gx --prepend PATH $_asdf_shims
+    end
+    set --erase _asdf_shims
+
+    test -e /opt/homebrew/bin/brew
+    and /opt/homebrew/bin/brew shellenv | source -
+
+    command -q starship; and starship init fish | source
+    command -q zoxide; and zoxide init fish | source
+    command -q fzf; and fzf --fish | source
+    command -q pyenv; and pyenv init - | source
 
     # The next line updates PATH for the Google Cloud SDK.
     # if test -f '/Users/m/Documents/google-cloud-sdk/path.fish.inc'; source '/Users/m/Documents/google-cloud-sdk/path.fish.inc'; end