fix(pl): 三方车辆与人员保存跳过必备证书校验

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/tests/test_pl_tripartite_cert_gates.py

@@ -0,0 +1,67 @@
+"""三方不强制证书；山峡仍强制。"""
+from __future__ import annotations
+
+import pytest
+from fastapi import HTTPException
+
+from app.services.pl_cert_required_service import (
+    validate_personnel_required_certs,
+    validate_vehicle_save_certs,
+)
+
+
+def test_carrier_personnel_skips_required_certs():
+    validate_personnel_required_certs(
+        [],
+        "driver",
+        personnel_affiliation="carrier",
+        subject_label="「张三」",
+    )
+
+
+def test_self_personnel_still_requires_certs():
+    with pytest.raises(HTTPException) as ei:
+        validate_personnel_required_certs(
+            [],
+            "driver",
+            personnel_affiliation="self",
+            subject_label="「李四」",
+        )
+    assert ei.value.status_code == 400
+    assert "必备证书" in ei.value.detail
+
+
+def test_validate_vehicle_save_certs_carrier_skips_vehicle_and_personnel_certs(monkeypatch):
+    """carrier 车：不跑车辆必备、不跑关联人员证书；仍可跑归属。"""
+    called = {"self": 0, "carrier": 0, "links": 0}
+
+    import app.services.pl_cert_required_service as svc
+
+    monkeypatch.setattr(
+        svc,
+        "validate_self_vehicle_required_certs",
+        lambda *a, **k: called.__setitem__("self", called["self"] + 1),
+    )
+    monkeypatch.setattr(
+        svc,
+        "validate_carrier_vehicle_required_certs",
+        lambda *a, **k: called.__setitem__("carrier", called["carrier"] + 1),
+    )
+    monkeypatch.setattr(
+        svc,
+        "validate_vehicle_personnel_cert_links",
+        lambda *a, **k: called.__setitem__("links", called["links"] + 1),
+    )
+    monkeypatch.setattr(svc, "validate_vehicle_personnel_affiliation", lambda *a, **k: None)
+
+    validate_vehicle_save_certs(
+        db=None,
+        tenant_no="t1",
+        vehicle_type="carrier",
+        trailer_no="皖LP359",
+        cert_rows=[],
+        personnel_rows=[],
+    )
+    assert called["carrier"] == 0
+    assert called["self"] == 0
+    assert called["links"] == 0