make the nature of zsh more apparent

lib/alias.zsh

@@ -1,3 +1,5 @@
+#!/usr/bin/env zsh
+
 # system usage
 #########################################
 alias reload="source ~/.zshrc"

lib/conda.zsh

@@ -1,3 +1,4 @@
+#!/usr/bin/env zsh
 # Updated to use $HOME
 
 # >>> conda initialize >>>

lib/custom.zsh

@@ -1,3 +1,5 @@
+#!/usr/bin/env zsh
+
 # env variables
 if ! [ $(cat /etc/hostname)=="thinkpad" ]; then
 	export BROWSER=/mnt/c/Users/daylin/AppData/Local/Vivaldi/Application/vivaldi.exe
@@ -5,4 +7,3 @@ else
 	export BROWSER=vivaldi-stable
 fi
 # aliases
-alias files=explorer.exe

lib/env.zsh

@@ -1,3 +1,5 @@
+#!/usr/bin/env zsh
+
 # XDG
 export XDG_CONFIG_HOME="${XDG_CONFIG_HOME:-$HOME/.config}"
 export XDG_DATA_HOME="${XDG_DATA_HOME:-$HOME/.local/share}"

lib/function.zsh

@@ -1,3 +1,5 @@
+#!/usr/bin/env zsh
+
 function cl() {
 	DIR="$*"
 	# if no DIR given, go home

lib/fzf.zsh

@@ -1,3 +1,5 @@
+#!/usr/bin/env zsh
+
 # Auto-completion
 # ---------------
 [[ $- == *i* ]] && source "$HOME/.fzf/shell/completion.zsh" 2>/dev/null

lib/path.zsh

@@ -1,3 +1,5 @@
+#!/usr/bin/env zsh
+
 # Start with system path
 # Retrieve it from getconf, otherwise it's just current $PATH
 prepend-path() {