Addresses the attached findings as blocking compliance failures. Each fix
removes a substitution pattern and adds a negative-control test.
Finding 9 (hash changes != enforced metamorphic expectations):
ci_reports now enforces a sound metamorphic relation per perturbation — a
perturbation the program CONSUMES must alter the trace — grounded in
reachability, with a non-vacuity check. Test:
consumed_perturbation_must_alter_trace.
Finding 10 (trace counts != causal explanation):
New causal_explanation gate ablates each recorded causal edge's source lane
and requires the destination delta to change. Measured: true-source 0.77 vs
scrambled-source 0.03. Threshold 0.50. New required report
causal_explanation_report. Test:
causal_edges_are_intervention_confirmed_not_counted.
Finding 6 (static seed corpus != failure retention):
replay_corpus::retention adds a committed, append-only counterexample corpus
(retained_failures.tsv) re-verified every run against the independent runtime.
Negative control: reintroduced_bug_is_caught_by_retention.
Finding 5 (mini mutation evaluator != real acceptance gate):
Mutants are now killed by ci_reports' OWN acceptance-gate predicates with
single-sourced thresholds (TRACE_EDGES_MIN, etc.); evaluate_mutants replaces
semantic_mutation::run_suite on the acceptance path. Test:
mutants_killed_by_real_acceptance_gates.
Findings 2 & 3 (generated report != independent attestation; merkle root !=
provenance without leaves):
ci_reports persists every Merkle leaf (evidence/leaves.tsv) + claims. New
`attestation` crate + `attest` binary recompute the root from the leaves in a
SEPARATE process that never reads compliance_report.json; wired as a distinct
merge-gates step. Negative control: tampered_leaf_breaks_attestation.
Finding 8 (structural indicators != measured behavior):
Domain gate already requires measured influence/mutation/removal; added an
explicit reject for "appears structurally but no measured influence".
Finding 1 (workflow != merge enforcement): BLOCKED on server-side branch
protection. Added .github/rulesets/main-required-checks.json + apply command;
enforcement still requires a repo admin to activate the ruleset.
Finding 7 (protocol socket E2E != rendered browser E2E): BLOCKED on a CI browser
runner; rendered-browser E2E remains advisory-only.
Finding 4 (trace summary != full trace evidence): PARTIAL. Each retained leaf
binds the full trace via canonical_hash over all graph edges, and the root is
independently recomputed from the leaves; per-execution raw-trace round-trip
reconstruction by the attestor is not yet implemented.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
linus-dandClaude Opus 4.8