zsh: rework ZDOTDIR redirection

.config/zsh/_.zsh

@@ -18,7 +18,7 @@ unsetopt global_rcs
 
 ## safety measure:
 ## redirect all following activity within ZDOTDIR to cache
-export ZDOTDIR="${ZSHU[d_cache]}/dots"
+export ZDOTDIR="${ZDOTDIR}/.config/zsh.dots"
 
 ## cleanup: start from scratch
 for i ( a s f d ) ; do unhash -$i -m '*' ; done ; unset i

.config/zsh/lib/selfservice.zsh

@@ -63,6 +63,7 @@ z-reload() {
 ## reload or new session are required to regenerate compcache
 z-cache-flush() {
     find "${ZSHU[d_cache]}/" -xdev -type f '!' -name '.keep' -delete
+    find "${ZSHU[d_zdot]}/.config/zsh.dots/" -xdev -type f '!' -name '.zshenv' -delete
     z-zwc-flush
     z-zwc-gen
 }