# Code Review Summary

**Branch**: feat/179-git-log-parser-gix -> main
**Date**: 2026-05-15T22:27
**Commit**: bd7b8c1 — refactor(heatmap): remove type aliases, use canonical CommitInfo/FileChangeInfo names

## Merge Recommendation: CHANGES_REQUESTED

All 9 reviewers (security, architecture, performance, complexity, consistency, regression, testing, reliability, rust) identified the same single issue: a comment typo introduced by the mechanical rename. This is a trivial fix but must be corrected before merge. The refactoring itself is clean and architecturally sound.

## Issue Summary
| Category | CRITICAL | HIGH | MEDIUM | LOW | Total |
|----------|----------|------|--------|-----|-------|
| Blocking | 0 | 0 | 1 | 0 | 1 |
| Should Fix | 0 | 0 | 0 | 0 | 0 |
| Pre-existing | 0 | 0 | 0 | 1 | 1 |

## Blocking Issues

### FileChangeInfoInfo typo in comment
**File**: `crates/rskim/src/cmd/heatmap/metrics.rs:78`
**Severity**: MEDIUM
**Confidence**: 100% (9/9 reviewers)
**Category**: Blocking (introduced in YOUR CHANGES)

**Problem**: The find-and-replace that renamed `FileChange` to `FileChangeInfo` also transformed a comment containing `FileChangeInfo.path` into `FileChangeInfoInfo.path` (double "Info" suffix). The typo names a type that doesn't exist and misleads readers of the borrowing safety rationale in the `compute_coupling` function.

**Fix**:
```rust
// Line 78 — change from:
// &str keys borrow from PathBuf::to_str() on each FileChangeInfoInfo.path — valid

// to:
// &str keys borrow from PathBuf::to_str() on each FileChangeInfo.path — valid
```

**Notes**: All 9 reviewers noted this identical issue with 95% initial confidence, boosted to 100% by consensus across all specialized lenses (security, architecture, performance, complexity, consistency, regression, testing, reliability, rust).

## Pre-existing Issues

### Doc comment uses old alias name "commit records"
**File**: `crates/rskim/src/cmd/heatmap/git_source.rs:54`
**Severity**: LOW
**Confidence**: 85% (consistency reviewer)
**Category**: Pre-existing (NOT your change — line not modified by this commit)

**Problem**: The doc comment `/// Fetch commit records according to config.` references the old alias name (`CommitRecord`). While the PR's purpose is to eliminate aliases and use canonical names, this comment predates the refactor and was not touched. This is informational only.

## Analysis

### What This Commit Does
This is a **pure mechanical rename refactor**:
- Removes two type aliases (`CommitRecord` → `CommitInfo`, `FileChange` → `FileChangeInfo`) from `types.rs`
- Replaces all usages across 4 files (`git_source.rs`, `metrics.rs`, `types.rs`, `mod.rs`) with canonical names
- Scope: +34/-29 lines, no behavioral changes

### Architectural Impact
Positive:
- **Eliminates indirection** — consumers use the same names as the source-of-truth crate (`rskim_search`), reducing cognitive overhead
- **Preserves module boundaries** — re-export in `types.rs` remains the single import point; no layering violations
- **Consistent naming** — `git_source.rs`, `metrics.rs`, `mod.rs` now all use canonical type names

### Test Coverage
- 135+ heatmap unit tests pass (27 metrics tests, 11 git_source parser tests)
- 161 tests total including integration tests
- Test helper `make_commit` correctly updated to use canonical names
- All test assertions, data construction, and expected values remain identical
- Zero regression: exports not removed without deprecation, return types backward-compatible

### Performance Impact
- Zero runtime impact — type aliases are erased at compile time
- No algorithmic changes, no new allocations
- Parallel computation preserved (`rayon::join` tree in `compute_heatmap` untouched)

### Security Assessment
- No changes to trust boundaries, input parsing, or validation logic
- No changes to git command construction (`--format`, `--numstat` args untouched)
- No new dependencies, no serialization format changes
- No secrets, credentials, or configuration handling affected

### Code Quality
- Fixes a code quality issue (dual-name confusion that aliases created)
- Improves maintainability by aligning internal names with the source-of-truth crate
- Consistent across all touched files

## Action Required

Fix the `FileChangeInfoInfo` typo at `metrics.rs:78`. This is a one-line comment correction:

```
Line 78: change "FileChangeInfoInfo.path" to "FileChangeInfo.path"
```

After this fix, all 9 reviewers will approve. No other changes are needed.

---

**Review Process**: 9 specialized reviewers (security, architecture, performance, complexity, consistency, regression, testing, reliability, rust) analyzed this incremental commit. Each reported identical findings: the mechanical rename is clean and sound; one comment typo needs correction.
