Address review feedback

- Removed low-value aliases
- Added alias `jla` for `jj log -r 'all()'` (I've been typing that a lot)
- Renamed alias `js` to `jsq` to remove ambiguity with `jj split`
- Use `zstyle` instead of an environment variable
- Load completions asynchronously, I think

plugins/jj/jj.plugin.zsh

@@ -3,12 +3,20 @@ if (( ! $+commands[jj] )); then
   return
 fi
 
-source <(jj util completion zsh)
-compdef _jj jj
+# If the completion file doesn't exist yet, we need to autoload it and
+# bind it to `jj`. Otherwise, compinit will have already done that.
+if [[ ! -f "$ZSH_CACHE_DIR/completions/_jj" ]]; then
+  typeset -g -A _comps
+  autoload -Uz _jj
+  _comps[jj]=_jj
+fi
+
+jj util completion zsh >| "$ZSH_CACHE_DIR/completions/_jj" &|
 
 function __jj_prompt_jj() {
-  local flags=("--no-pager")
-  if (( ${ZSH_THEME_JJ_IGNORE_WORKING_COPY:-0} )); then
+  local -a flags
+  flags=("--no-pager")
+  if zstyle -t ':omz:plugins:jj' ignore-working-copy; then
     flags+=("--ignore-working-copy")
   fi
   command jj $flags "$@"
@@ -26,14 +34,6 @@ function jj_prompt_template() {
 }
 
 # Aliases (sorted alphabetically)
-alias j='jj'
-alias jb='jj bookmark'
-alias jbc='jj bookmark create'
-alias jbd='jj bookmark d'
-alias jbl='jj bookmark list'
-alias jbr='jj bookmark rename'
-alias jbs='jj bookmark set'
-alias jbt='jj bookmark track'
 alias jc='jj commit'
 alias jcmsg='jj commit --message'
 alias jd='jj diff'
@@ -44,12 +44,10 @@ alias jgcl='jj git clone'
 alias jgf='jj git fetch'
 alias jgp='jj git push'
 alias jl='jj log'
+alias jla='jj log -r "all()"'
 alias jn='jj new'
 alias jrb='jj rebase'
 alias jrs='jj restore'
 alias jrt='cd "$(jj root || echo .)"'
-alias js='jj squash'
 alias jsp='jj split'
-alias jsps='jj split --siblings'
-alias jst='jj st'
-alias jsto='jj squash --into'
+alias jsq='jj squash'