Grep and Find pass over a directory they may not open and keep every other hit, saying in one line how many they skipped

One `chmod 000` directory anywhere under a pane made every Grep say
`pattern not found` and every Find `access denied`: the walk's `try
w.enter`/`try w.next` ended it at the first refusal. Each is now counted
and passed over, and the +Search ends `N directories skipped:
permission denied` under the hits.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

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