guards: an exited guard is the machine's only on exit 127, never from its output;
secrets: clear an interrupted run's added-line copies before scanning;
environment: one fix table per kind, one ANSI strip, hoisted not-found vocabulary;
starter returns its lines; allowlistDigest reuses sha256; stale headers and the
PREGATE_INCOMPLETE fix clause updated; tests for the mixed verify branch, disk
precedence, allowlist boundaries, a positionless finding, head-policy strictness,
run-id edges and the unwritable state root.
Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>
