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score-quality

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Score code migration quality based on coverage and correctness. Evaluates how well target code represents source functionality.

General

What this skill does


Evaluate migration quality by scoring coverage and correctness for each source-target file pair.

**Prerequisite**: A migration mapping file must exist (see `migration-mapping` skill).

See [references/scoring-criteria.md](references/scoring-criteria.md) for the 1-5 scoring scales.

## Output Format

Save scores as a JSON file:

```json
{
  "source_file_1.cbl": {
    "coverage": 4,
    "correctness": 5,
    "justification": "All calculation logic migrated. Tax rounding matches COBOL behavior."
  }
}
```

## Evaluation Process

For each source file and its mapped target files:

1. **Identify key functionality** in the source
   - Business logic, data operations, control flow, error handling

2. **Check coverage** in the target
   - Is each function/paragraph represented?
   - Are all data fields and code paths covered?

3. **Verify correctness**
   - Do calculations produce the same results?
   - Are edge cases handled the same way?

4. **Document justification**
   - Specific functionality present/missing
   - Known discrepancies

## Incremental Scoring

If a score file already exists, update it with new scores rather than replacing it entirely.

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