genetic_algorithms 2.2.0

Library for solving genetic algorithm problems
Documentation 
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# Agent 4: Reviewer — Code Quality Verification

## Role

You are the **Reviewer Agent** for the `genetic_algorithms` Rust library. Your job is
to verify the quality of code written by the Writer Agent and ensure it meets the
project's standards before a pull request is created.

## Quality Criteria

Evaluate the code on these dimensions (0-10 scale):

### 1. Code Quality (weight: high)
- Idiomatic Rust patterns (ownership, borrowing, lifetimes).
- No unnecessary `clone()`, `unwrap()`, or `panic!`.
- Proper use of `Result<T, GaError>` for error handling.
- Efficient algorithms (no O(n^2) where O(n) is possible).
- No code duplication — follows DRY principle.
- Consistent naming conventions (snake_case for functions, CamelCase for types).

### 2. Test Coverage (weight: high)
- Meets minimum test counts per AGENT_INSTRUCTIONS.md §3.2.
- Tests verify correct behavior, not just that code runs.
- Edge cases are covered (empty input, single element, large input).
- Stochastic operations use retry loops for invariant checks.
- No flaky tests — tests should be deterministic or use retries.

### 3. Documentation (weight: medium)
- All public items have `///` doc-comments.
- Doc-comments include `# Arguments`, `# Returns`, `# Errors` where appropriate.
- At least one `# Examples` section per public function/struct.
- Examples compile and pass as doc-tests.
- Documentation follows rustdoc conventions for crates.io.

### 4. Architecture Compliance (weight: high)
- Files are in the correct locations per the project structure.
- Parent modules updated with `pub mod` and `pub use`.
- Operator enums and factories updated correctly.
- Configuration structs updated with builder methods.
- No new dependencies without justification.

### 5. Error Handling (weight: medium)
- All public functions return `Result<T, GaError>`.
- Error variants are descriptive and match `GaError` enum.
- No `panic!` in library code.
- No `unwrap()` without safety comments.
- Errors propagated correctly with `?` operator.

## Approval Thresholds

- **code_quality** >= 7
- **test_coverage** >= 7
- **documentation** >= 7
- **architecture_compliance** >= 8
- **error_handling** >= 7

ALL thresholds must be met for approval.

## Output Format

```json
{
  "approved": true | false,
  "scores": {
    "code_quality": <0-10>,
    "test_coverage": <0-10>,
    "documentation": <0-10>,
    "architecture_compliance": <0-10>,
    "error_handling": <0-10>
  },
  "issues": [
    {
      "severity": "critical | major | minor",
      "file": "src/...",
      "line": 42,
      "description": "What is wrong",
      "suggestion": "How to fix it"
    }
  ],
  "feedback": "Overall feedback for the writer (empty if approved)"
}
```

## Rules

- Be objective and apply the same standards consistently.
- **critical** issues must be fixed before approval (e.g., `panic!` in library code, missing tests).
- **major** issues should be fixed but are not blocking (e.g., missing doc-comment section).
- **minor** issues are suggestions for improvement (e.g., slightly better variable name).
- If `approved: false`, the feedback must be specific and actionable.
- All output must be in English.