- edit_file: blockAnchorReplacer now returns every span clearing the
similarity threshold (best first) instead of silently picking the
single most-similar block. Hiding competitors from the cascade's
distinct-candidate check could edit the wrong block when two blocks
share anchors and both interiors are plausible; one clear winner still
resolves, two plausible blocks now report ambiguity (covered by a
two-block test that asserts the file is untouched).
- agent tests: the parallel write-barrier test now records both probes
into one mutex-guarded shared log and asserts the cross-probe ordering
it always claimed to (write starts after the first read batch ends;
second read batch starts after the write ends). The previous version
only compared indices within the read probe's own log, which a
regression letting the write overlap a batch could still pass; the
stray no-op mutex assignment is gone.
Kevin Codex
2e2c181d28