# Resolution Summary

**Branch**: feature/191-cochange-validation-benchmark -> main
**Date**: 2026-05-29_0447
**Review**: .devflow/docs/reviews/feature-191-cochange-validation-benchmark/2026-05-29_0447
**Command**: /resolve

## Decisions Citations

- applies ADR-001 — batch-1 (all), batch-2 (all), batch-3 (report.rs:181), batch-4 (chrono_now), batch-5 (clone.rs timeout dup), batch-6 (all), batch-7 (jaccard cache, actual_sets, unbounded parse)
- avoids PF-002 — batch-5 (pre-existing clone.rs duplication fixed rather than deferred)

## Statistics
| Metric | Value |
|--------|-------|
| Total Issues | 15 |
| Fixed | 11 |
| False Positive | 4 |
| Deferred | 0 |
| Blocked | 0 |

## Fixed Issues
| Issue | File:Line | Commit |
|-------|-----------|--------|
| Clippy cmp_owned — PathBuf::from→Path::new in tests | deny_list.rs:314 | e4a1d1c |
| Stale Cargo.lock phantom libc entry | Cargo.lock:2316 | d07cf7f |
| repo_section error-rendering branch test added | report.rs:181 | b12a814 |
| chrono_now extracted to epoch_days_to_ymd + 7 deterministic tests | cochange_validate.rs:223 | 3fd59a7 |
| clone.rs timeout helper duplication → generic run_with_timeout | clone.rs:74 | 977414a |
| sweep_thresholds 12→5 params via EvalAccumulators struct | validate.rs:702 | 82a9a79 |
| Redundant intersection walk → single count in accumulate() | validate.rs:730 | 82a9a79 |
| evaluate_at_thresholds 142→77 lines via finalize() method | validate.rs:200 | 82a9a79 |
| compute_jaccard_cache alloc churn → fill_jaccard_scratch reuse | validate.rs:279 | bbb4907 |
| compute_actual_sets O(K²) → single all_known_scratch HashSet | validate.rs:681 | bbb4907 |
| Unbounded parse_history → MAX_COMMITS_FOR_PARSE (500k) guard | validate.rs:558 | bbb4907 |

## False Positives
| Issue | File:Line | Reasoning |
|-------|-----------|-----------|
| to_json signature divergence | report.rs:20 | Already classified as valid design divergence in cycle 2 — CochangeValidationResult is self-contained |
| chrono_now reinvents time crate | cochange_validate.rs:223 | time crate is not a transitive dependency; comment documents intentional choice to use only std::time |
| build_path_map PathBuf clones | validate.rs:94 | Issue self-declares informational; BTreeSet borrows paths, only final HashMap clone is unavoidable |
| f64 equality check in compute_f1 | validate.rs:134 | Intentional division-by-zero guard — denom == 0.0 is a discrete case (both precision and recall exactly zero) |

## Deferred to Tech Debt
(none)

## Blocked
(none)
