feat: funciones Python datascience, finance, cybersecurity y pipelines

Datascience: aggregate_by_group, deduplicate_entities/relations, detect_drift,
diff_entities/relations, extract_entities/relations_llm, hotness_score, melt,
merge_graphs, pivot, build_entity/relation_schema_prompt.
Finance: avellaneda_stoikov_quotes, generate_gbm_prices, generate_taker_order,
hawkes_intensity + módulo finance.py.
Cybersecurity: envelope_encrypt/decrypt + módulo cybersecurity.py.
Pipelines: extraction_pipeline, monte_carlo_market, run_market_sim.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

python/functions/datascience/diff_relations_test.py

@@ -0,0 +1,78 @@
+"""Tests para diff_relations."""
+
+import sys
+import os
+
+sys.path.insert(0, os.path.dirname(__file__))
+from diff_relations import diff_relations
+
+
+def test_relacion_anadida():
+    before = [{"source_id": "A", "target_id": "B", "relation_type": "knows", "weight": 1.0}]
+    after = [
+        {"source_id": "A", "target_id": "B", "relation_type": "knows", "weight": 1.0},
+        {"source_id": "C", "target_id": "D", "relation_type": "owns", "weight": 0.5},
+    ]
+    result = diff_relations(before, after)
+    assert len(result["added"]) == 1
+    assert result["added"][0]["source_id"] == "C"
+    assert result["removed"] == []
+    assert result["unchanged"] == 1
+    assert "1 added" in result["summary"]
+
+
+def test_relacion_eliminada():
+    before = [
+        {"source_id": "A", "target_id": "B", "relation_type": "knows", "weight": 1.0},
+        {"source_id": "C", "target_id": "D", "relation_type": "owns", "weight": 0.5},
+    ]
+    after = [{"source_id": "A", "target_id": "B", "relation_type": "knows", "weight": 1.0}]
+    result = diff_relations(before, after)
+    assert result["added"] == []
+    assert len(result["removed"]) == 1
+    assert result["removed"][0]["source_id"] == "C"
+    assert result["unchanged"] == 1
+    assert "1 removed" in result["summary"]
+
+
+def test_relacion_con_metadata_modificada_mismo_source_target_type_distinto_weight():
+    before = [{"source_id": "A", "target_id": "B", "relation_type": "knows", "weight": 1.0}]
+    after = [{"source_id": "A", "target_id": "B", "relation_type": "knows", "weight": 5.0}]
+    result = diff_relations(before, after)
+    assert result["added"] == []
+    assert result["removed"] == []
+    assert len(result["modified"]) == 1
+    mod = result["modified"][0]
+    assert mod["key"] == "A|B|knows"
+    assert "weight" in mod["changes"]
+    assert mod["changes"]["weight"]["old"] == 1.0
+    assert mod["changes"]["weight"]["new"] == 5.0
+    assert result["unchanged"] == 0
+
+
+def test_key_compuesta_funciona_correctamente():
+    # Misma pareja A->B pero diferente tipo de relacion -> dos relaciones distintas
+    before = [
+        {"source_id": "A", "target_id": "B", "relation_type": "knows", "weight": 1.0},
+        {"source_id": "A", "target_id": "B", "relation_type": "owns", "weight": 0.5},
+    ]
+    after = [
+        {"source_id": "A", "target_id": "B", "relation_type": "knows", "weight": 1.0},
+        {"source_id": "A", "target_id": "B", "relation_type": "trusts", "weight": 0.8},
+    ]
+    result = diff_relations(before, after)
+    # owns eliminada, trusts añadida, knows sin cambios
+    assert len(result["added"]) == 1
+    assert result["added"][0]["relation_type"] == "trusts"
+    assert len(result["removed"]) == 1
+    assert result["removed"][0]["relation_type"] == "owns"
+    assert result["unchanged"] == 1
+    assert result["modified"] == []
+
+
+if __name__ == "__main__":
+    test_relacion_anadida()
+    test_relacion_eliminada()
+    test_relacion_con_metadata_modificada_mismo_source_target_type_distinto_weight()
+    test_key_compuesta_funciona_correctamente()
+    print("All tests passed.")