Clicking a history snapshot in the tree 404'd: the dispatcher's dot-prefix
guard blocks every .-segment URL, and the preview fetch hit the raw
.history/<stem>/<snap>.md path. But .history is ACL-modeled content (it
inherits the shadowed file's .zddc chain), not infra like .devshell — so
the guard was redundant with permissions there.
Carve GET/HEAD of .history out of the dot-prefix guard: snapshots are now
fetchable as ordinary ACL-gated files (read the live file → read its
history). Writes into .history stay blocked, and the listing dot-filter
still hides it from default views unless ?hidden is set. Export
handler.HistoryDirName for the dispatcher.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
ZDDC
b9ebee7551