Initial public release

skills/qaqc-review/SKILL.md

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+# Skill: QA/QC Review
+
+Use this skill for comparing predicted geospatial outputs against reference layers such as GRB buildings.
+
+## Read first
+
+- `docs/QA_QC_SPECIFICATION.md`
+- `docs/QA_QC_ENGINE.md`
+- `docs/qaqc/ANTI_REGRESSION_RULES.md`
+- `docs/API_EXAMPLE_RESPONSES.md`
+
+## QA/QC rules
+
+- Reference data and predicted data must remain separate.
+- Matching thresholds must be explicit.
+- False positives and false negatives must be exportable.
+- Metrics must be reproducible from stored inputs.
+- Do not hide low-confidence results; classify or flag them.
+
+## Core metrics
+
+- IoU.
+- Precision.
+- Recall.
+- F1.
+- Matched count.
+- Unmatched reference count.
+- Unmatched prediction count.
+
+## Implementation checklist
+
+- [ ] Define matching method.
+- [ ] Implement geometry overlap calculation.
+- [ ] Calculate metrics.
+- [ ] Persist or return QA results.
+- [ ] Create GeoJSON outputs for matched/unmatched classes.
+- [ ] Add fixture-based tests.
+
+## Completion report fields
+
+- Matching method.
+- Thresholds.
+- Metrics returned.
+- Fixtures used.
+- Known QA limitations.