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.

.gitconfig

@@ -1,6 +1,7 @@
 [alias]
   co = checkout
-  sco = restore --staged
+  rs = restore
+  rss = restore --staged
   br = branch
   cm = commit
   st = status
@@ -21,6 +22,7 @@
   merff = merge --ff-only
   fa = fetch --all
   pa = push --all
+  ap = add --patch
 
 [core]
   editor = nvim