feat(fc3c): expose download_rate_limit_seconds + download_validate_files in /api/settings/import

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/test_api_settings_downloader.py

@@ -0,0 +1,59 @@
+import pytest
+
+from backend.app import create_app
+
+pytestmark = pytest.mark.integration
+
+
+@pytest.fixture
+async def app():
+    return create_app()
+
+
+@pytest.fixture
+async def client(app):
+    async with app.test_client() as c:
+        yield c
+
+
+@pytest.mark.asyncio
+async def test_get_includes_downloader_fields(client):
+    resp = await client.get("/api/settings/import")
+    assert resp.status_code == 200
+    body = await resp.get_json()
+    assert body["download_rate_limit_seconds"] == 3.0
+    assert body["download_validate_files"] is True
+
+
+@pytest.mark.asyncio
+async def test_patch_download_rate_limit(client):
+    resp = await client.patch(
+        "/api/settings/import", json={"download_rate_limit_seconds": 1.5}
+    )
+    assert resp.status_code == 200
+    assert (await resp.get_json())["download_rate_limit_seconds"] == 1.5
+
+
+@pytest.mark.asyncio
+async def test_patch_download_validate_files_false(client):
+    resp = await client.patch(
+        "/api/settings/import", json={"download_validate_files": False}
+    )
+    assert resp.status_code == 200
+    assert (await resp.get_json())["download_validate_files"] is False
+
+
+@pytest.mark.asyncio
+async def test_patch_rejects_negative_rate_limit(client):
+    resp = await client.patch(
+        "/api/settings/import", json={"download_rate_limit_seconds": -1.0}
+    )
+    assert resp.status_code == 400
+
+
+@pytest.mark.asyncio
+async def test_patch_rejects_non_bool_validate(client):
+    resp = await client.patch(
+        "/api/settings/import", json={"download_validate_files": "yes"}
+    )
+    assert resp.status_code == 400