A first-touch Edit/Write denial marks the file checked so the retry
passes. Sibling edits to the same file in the same parallel batch are
therefore judged against post-denial state and silently apply, leaving
the file in a state neither version intended.
Hooks see tool calls one at a time, so a batch-wide lock is not
possible. Instead make the partial application explicit: the Edit,
Write, MultiEdit, and condensed denials now name the file and warn
that other edits from the same batch may already have been applied,
and SKILL.md tells agents to send dependent edits sequentially and
re-read the file after a gated batch.
Affaan Mustafa
db61d1c76a