Review follow-ups (Codex on #6362, round 5):
- #computeSnapcompactRescueMaxFrames now subtracts the kept tail AFTER the
archive (plus the existing fixed-context reserves) so the budget mirrors
what #compactionCreatedHeadroom will measure, and returns 0 when not even
one frame fits — the rescue bails instead of appending a rebuild that can
never create headroom (and would wedge prepareCompaction behind its
last-entry guard once elide fixes the real tail).
- Dead-end warnings now stamp the branch's LATEST compaction entry: the
post-pass path no longer badges the entry the rescue just superseded, and
the no-preparation path badges the rebuilt entry when the rescue appended
without creating headroom.
Claude-Session: https://claude.ai/code/session_014rh4JyWFkxgMhgFaEf8VBY
Hugo Lopes
d8554c92d0