feat: sync mismatch progress evidence closure

tests/test_three_engine_mismatch_progress_ledger.py

@@ -0,0 +1,41 @@
+import json
+import subprocess
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+ARTIFACT = ROOT / "references/oracle/three_engine_mismatch_progress_ledger_2026_07_19.json"
+INDEX = ROOT / "references/oracle/evidence_packet_index_2026_07_19.json"
+
+
+def test_three_engine_progress_ledger_reports_attributed_node_rows():
+    data = json.loads(
+        subprocess.check_output(
+            ["python3", "scripts/three_engine_mismatch_progress_ledger.py"],
+            cwd=ROOT,
+            text=True,
+        )
+    )
+    assert data["scope"] == "three_engine_mismatch_progress_ledger"
+    assert data["claim_status"] == "partial"
+    assert data["truth_matrix_allowed"] is False
+    assert data["summary"] == {
+        "source_queue_count": 60,
+        "attributed_no_tuning_count": 2,
+        "remaining_open_count": 58,
+    }
+
+
+def test_three_engine_progress_ledger_does_not_close_queue_or_vote():
+    data = json.loads(ARTIFACT.read_text(encoding="utf-8"))
+    assert {row["field"] for row in data["attributed_rows"]} == {"Rahu", "Ketu"}
+    assert all(row["closure_state"] == "attributed_no_tuning" for row in data["attributed_rows"])
+    assert "no engine majority vote is allowed" in data["boundary"]
+
+
+def test_evidence_index_registers_three_engine_progress_ledger():
+    packets = {
+        row["packet_id"]: row
+        for row in json.loads(INDEX.read_text(encoding="utf-8"))["packets"]
+    }
+    assert packets["three_engine_mismatch_progress_ledger"]["claim_status"] == "partial"