feat: add persistent monthly settlement drafts and approved valuation selection

tests/test_settlement_draft_legacy_shapes.py

@@ -0,0 +1,24 @@
+"""Additive draft lineage must preserve legacy persisted evidence shapes."""
+import pytest
+
+from jarca_ledger_mcp.application.assets_service import _closed_run_metadata
+
+
+@pytest.mark.parametrize('field,public_field', [
+    ('excluded_evidence', 'excluded_items'), ('carried_evidence', 'carried_items'),
+])
+def test_legacy_run_evidence_does_not_gain_draft_identity_keys(field, public_field):
+    evidence = {'source_type': 'manual_asset', 'source_id': 'synthetic', 'reason': 'missing_valuation_amount', 'currency': 'KRW'}
+    metadata = {'snapshot_run_id': 'legacy-run', 'draft_id': '', 'draft_version': 0, 'review_fingerprint': '', field: [evidence]}
+    result = _closed_run_metadata(metadata)
+    assert result[public_field] == [evidence]
+    assert 'blocking' not in result[public_field][0]
+    assert not {'draft_id', 'draft_version', 'review_fingerprint'} & result[public_field][0].keys()
+
+
+def test_draft_evidence_retains_its_persisted_lineage_and_selection_reason():
+    evidence = {'source_type': 'account', 'source_id': 'synthetic', 'draft_id': 'draft', 'draft_version': 2, 'review_fingerprint': 'fingerprint', 'selection_mode': 'manual_substitute', 'selection_reason': 'synthetic statement', 'item_version': 2}
+    metadata = {'snapshot_run_id': 'draft-run', 'applied_evidence': [evidence]}
+    result = _closed_run_metadata(metadata)
+    assert result['applied_evidence'] == [evidence]
+    assert result['contains_substitutions']