Refactor menu flows into dedicated pages

tests/test_entries.py

@@ -128,3 +128,90 @@ async def test_expense_crud_and_insurance_allocation(client, auth_headers) -> No
 
     deleted = await client.delete(f"/api/expenses/{entry_id}", headers=auth_headers)
     assert deleted.status_code == 204
+
+
+@pytest.mark.asyncio
+async def test_my_data_export_preview_and_import(client, auth_headers, other_auth_headers) -> None:
+    car = (
+        await client.post(
+            "/api/cars",
+            headers=auth_headers,
+            json={
+                "name": "Export car",
+                "make": "Kia",
+                "model": "K5",
+                "plate_number": "12가3456",
+                "vin": "1HGCM82633A004352",
+                "engine_oil_type": "5W-30 API SP",
+                "current_odometer": 10000,
+            },
+        )
+    ).json()
+    await client.post(
+        "/api/fuel",
+        headers=auth_headers,
+        json={
+            "car_id": car["id"],
+            "entry_date": "2026-05-12",
+            "odometer": 10100,
+            "liters": 40,
+            "price_per_liter": 2,
+        },
+    )
+    await client.post(
+        "/api/service",
+        headers=auth_headers,
+        json={
+            "car_id": car["id"],
+            "entry_date": "2026-05-13",
+            "odometer": 10200,
+            "service_type": "maintenance",
+            "title": "Oil change",
+            "total_cost": 120,
+        },
+    )
+    await client.post(
+        "/api/expenses",
+        headers=auth_headers,
+        json={
+            "car_id": car["id"],
+            "entry_date": "2026-05-14",
+            "category": "parking",
+            "title": "Parking",
+            "total_cost": 10,
+        },
+    )
+
+    exported = await client.get("/api/my/export", headers=auth_headers)
+    assert exported.status_code == 200
+    payload = exported.json()
+    assert payload["schema"] == "carpass.exchange.v1"
+    assert payload["vehicles"][0]["vehicle"]["name"] == "Export car"
+
+    preview = await client.post("/api/my/import/preview", headers=other_auth_headers, json=payload)
+    assert preview.status_code == 200
+    assert preview.json()["counts"] == {
+        "vehicles": 1,
+        "fuel_entries": 1,
+        "service_entries": 1,
+        "expense_entries": 1,
+        "appointments": 0,
+        "service_visits": 0,
+    }
+
+    imported = await client.post("/api/my/import", headers=other_auth_headers, json=payload)
+    assert imported.status_code == 200
+    assert imported.json()["imported"]["vehicles_created"] == 1
+    assert imported.json()["imported"]["fuel_entries"] == 1
+
+    repeated = await client.post("/api/my/import", headers=other_auth_headers, json=payload)
+    assert repeated.status_code == 200
+    assert repeated.json()["imported"]["vehicles_matched"] == 1
+    assert repeated.json()["imported"]["fuel_entries"] == 0
+
+    imported_cars = await client.get("/api/cars", headers=other_auth_headers)
+    assert imported_cars.status_code == 200
+    imported_car = imported_cars.json()[0]
+    assert imported_car["name"] == "Export car"
+    assert imported_car["engine_oil_type"] == "5W-30 API SP"
+    assert imported_car["current_odometer"] == 10200