fix(backend): make 835 summary counts consistent with total_claims

backend/tests/test_cli_835.py

@@ -9,6 +9,7 @@ from cyclone.cli import main
 
 FIXTURE = Path(__file__).parent / "fixtures" / "minimal_835.txt"
 UNBALANCED = Path(__file__).parent / "fixtures" / "unbalanced_835.txt"
+CO_FIXTURE = Path(__file__).parent / "fixtures" / "co_medicaid_835.txt"
 
 
 def test_cli_parse_835_writes_outputs(tmp_path: Path):
@@ -71,3 +72,21 @@ def test_cli_parse_835_generic_payer(tmp_path: Path):
     assert result.exit_code == 0, result.output
     summary = json.loads((tmp_path / "summary.json").read_text())
     assert summary["passed"] == 1
+
+
+def test_cli_parse_835_summary_counts_consistent(tmp_path: Path):
+    """Regression: passed + failed must equal total_claims for any batch size.
+
+    The CO Medicaid fixture has 2 claim payments; if the batch validates
+    cleanly, both must show as passed (passed=2, failed=0). A pre-fix
+    implementation set passed=1 regardless of claim count.
+    """
+    runner = CliRunner()
+    result = runner.invoke(main, ["parse-835", str(CO_FIXTURE), "--output-dir", str(tmp_path)])
+    assert result.exit_code == 0, result.output
+    summary = json.loads((tmp_path / "summary.json").read_text())
+    assert summary["total_claims"] == 2
+    assert summary["passed"] + summary["failed"] == summary["total_claims"]
+    assert summary["passed"] == 2
+    assert summary["failed"] == 0
+    assert summary["failed_claim_ids"] == []