Two issues the Task 6 re-review raised against the fix diff.
permissionsFor rebuilt the deny Set inside its loop over granted entries,
making it O(grants x denies) allocations on a per-request path. Measured
632ms at 4000x4000, ~100% of it in repeated Set construction. Hoisted.
permissionsFor also only half-delivers on "the obvious composition agrees
with decide()". A narrow deny beneath a broad grant is not representable in
a Set of strings - the set keeps post:* while decide() correctly refuses
post:delete - so callers that match against the set would offer actions the
server rejects. Documented the limit on the interface and pointed callers at
decide()/can()/filterCan() for per-action gating.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
ClintchizandClaude Opus 5
d6a2d05407