Coverage was derived from the worktree alone, so the -d guard on a
hook's bundled assets/ tree meant deleting the whole tree removed it
from the pathspec instead of flagging it — the gate stayed silent
about a change that breaks every consumer at the next rev:.
The path set is now derived twice, from the worktree manifest and from
the manifest at $LAST_TAG, then unioned. A path the tag exposed but
HEAD no longer does is a removal pinned consumers must be told about;
a path only HEAD exposes is new contract surface. Both need flagging.
Fails closed on an unreadable tagged tree (shallow clone), and treats
a readable root tree with no manifest as "added since the tag".
tokens[0] needed no exit-code fix — it carries no existence guard, so
both deletion cases already exited non-zero. What was wrong was the
reporting: a fully retired hook could no longer be named in the
failure message. The tagged manifest fixes that.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MCQ648fLSFXPHGZdQ8gn58
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