Make various small clean-up changes

src_files/.config/zsh/.zshrc

@@ -23,6 +23,7 @@ alias ls='ls -F'
 alias ksh=oksh # NOTE: if i ever use openBSD, conditionally remove this alias
 
 # focus/productivity/similar
+alias cal="calcurse"
 alias note="cd $DIR_NOTES/inbox; $EDITOR"
 alias todo="cd $DIR_NOTES/rhythm; $EDITOR todo.md"
 alias budget="open $DIR_HOME_BOX/finance/budget/.current"