misc update

- known dependencies
- lessen symlink checking (might not easily break)
- move shell history into `/tmp`.
(py didn't often operate filesystem which doesn't matter)

.zprofile

@@ -1,10 +1,6 @@
 # init at each startup
-mkdir -p /tmp/$USER
-#ln -sf /tmp/$UID $HOME/.tmp
-[ $(readlink -f $HOME/.tmp) = "/tmp/$USER" ] || {
-    rm -f $HOME/.tmp
-    ln -s /tmp/$USER $HOME/.tmp
-}
+mkdir -p /tmp/$USER/PSReadLine
+#ln -sf /tmp/$USER $HOME/.tmp
 
 # avoid dumplicate env appending.
 # [[ -f /run/user/$UID/.zshlogon ]] && return