Update Direnv hook to match current recommendation

dot-config/zsh/interactive/direnv

@@ -1,8 +1,12 @@
 #! zsh
 _direnv_hook() {
-	eval "$(direnv export zsh)"
+	trap -- '' SIGINT
+	emulate zsh -c "$(direnv export zsh)"
+	trap - SIGINT
 }
-typeset -ag precmd_functions
-if (( $+commands[direnv] )) && [[ -z ${precmd_functions[(r)_direnv_hook]} ]]; then
-	precmd_functions+=(_direnv_hook)
+
+typeset -ag precmd_functions chpwd_functions
+if (( $+commands[direnv] )); then
+	[[ -z ${precmd_functions[(r)_direnv_hook]} ]] && precmd_functions+=(_direnv_hook)
+	[[ -z ${chpwd_functions[(r)_direnv_hook]} ]] && chpwd_functions+=(_direnv_hook)
 fi

dot-config/zsh/zshrc

@@ -1,3 +1,7 @@
+# For accurate instant prompt from Powerlevel10k, we need to load up the
+# correct environment from direnv first.
+(( ${+commands[direnv]} )) && emulate zsh -c "$(direnv export zsh)"
+
 # Enable Powerlevel10k instant prompt. Should stay close to the top of zshrc.
 # Initialization code that may require console input (password prompts, [y/n]
 # confirmations, etc.) must go above this block; everything else may go below.