Initial commit

tests/test_aggregate.py

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+from pathlib import Path
+
+from genomic_consultant.panels.aggregate import merge_mappings
+import json
+
+
+def test_merge_mappings(tmp_path: Path):
+    a = tmp_path / "a.json"
+    b = tmp_path / "b.json"
+    a.write_text('{"source":"A","phenotype_to_genes":{"HP:1":["G1","G2"]}}')
+    b.write_text('{"source":"B","phenotype_to_genes":{"HP:1":["G2","G3"],"HP:2":["G4"]}}')
+    out = tmp_path / "out.json"
+    merge_mappings([a, b], out)
+    data = json.loads(out.read_text())
+    assert sorted(data["phenotype_to_genes"]["HP:1"]) == ["G1", "G2", "G3"]
+    assert data["phenotype_to_genes"]["HP:2"] == ["G4"]