Add service platform foundation

tests/test_platform.py

@@ -0,0 +1,75 @@
+from io import BytesIO
+
+import pytest
+
+
+@pytest.mark.asyncio
+async def test_vin_validation_rejects_invalid_value(client, auth_headers) -> None:
+    response = await client.post(
+        "/api/my/vehicles",
+        headers=auth_headers,
+        json={"name": "Bad VIN", "vin": "IOQ123"},
+    )
+
+    assert response.status_code == 422
+
+
+@pytest.mark.asyncio
+async def test_service_visit_owner_confirmation_and_change_request(client, auth_headers) -> None:
+    vehicle = (
+        await client.post(
+            "/api/my/vehicles",
+            headers=auth_headers,
+            json={"name": "Platform car", "license_plate": "12 가 3456", "license_plate_country": "KR"},
+        )
+    ).json()
+    center = (
+        await client.post(
+            "/api/service-centers",
+            headers=auth_headers,
+            json={"display_name": "Careful Service", "country": "KR", "city": "Seoul"},
+        )
+    ).json()
+    visit = (
+        await client.post(
+            f"/api/service-centers/{center['id']}/visits",
+            headers=auth_headers,
+            json={"vehicle_id": vehicle["id"], "visit_date": "2026-05-12", "odometer": 12345},
+        )
+    ).json()
+
+    item_response = await client.post(
+        f"/api/service-visits/{visit['id']}/work-items",
+        headers=auth_headers,
+        json={"work_type": "oil_change", "title": "Engine oil", "oil_viscosity": "5W-30", "price": 100},
+    )
+    complete_response = await client.post(f"/api/service-visits/{visit['id']}/complete", headers=auth_headers)
+    confirm_response = await client.post(f"/api/service-visits/{visit['id']}/confirm", headers=auth_headers)
+    change_request = (
+        await client.post(
+            f"/api/service-visits/{visit['id']}/vehicle-change-requests",
+            headers=auth_headers,
+            json={"vehicle_id": vehicle["id"], "field_name": "vin", "new_value": "KMHCT41BAHU123456"},
+        )
+    ).json()
+    approve_response = await client.post(
+        f"/api/vehicle-change-requests/{change_request['id']}/approve",
+        headers=auth_headers,
+    )
+
+    assert item_response.status_code == 201
+    assert complete_response.json()["status"] == "pending_owner_confirmation"
+    assert confirm_response.json()["status"] == "confirmed"
+    assert approve_response.json()["status"] == "approved"
+
+
+@pytest.mark.asyncio
+async def test_ocr_candidates_do_not_write_vehicle_data(client, auth_headers) -> None:
+    response = await client.post(
+        "/api/ocr/vin",
+        headers=auth_headers,
+        files={"file": ("vin.txt", BytesIO(b"VIN KMHCT41BAHU123456"), "text/plain")},
+    )
+
+    assert response.status_code == 200
+    assert response.json()["candidates"][0]["type"] == "vin"