fix(updates): avoid network stack traces offline

tests/frontend/managers/updateService.test.js

@@ -0,0 +1,45 @@
+import { describe, beforeEach, afterEach, expect, it, vi } from 'vitest';
+import { UpdateService } from '../../../static/js/managers/UpdateService.js';
+
+function createFetchResponse(payload) {
+    return {
+        json: vi.fn().mockResolvedValue(payload)
+    };
+}
+
+describe('UpdateService passive checks', () => {
+    let service;
+    let fetchMock;
+
+    beforeEach(() => {
+        fetchMock = vi.fn().mockResolvedValue(createFetchResponse({
+            success: true,
+            current_version: 'v1.0.0',
+            latest_version: 'v1.0.0',
+            git_info: { short_hash: 'abc123' }
+        }));
+        global.fetch = fetchMock;
+
+        service = new UpdateService();
+        service.updateNotificationsEnabled = false;
+        service.lastCheckTime = 0;
+        service.nightlyMode = false;
+    });
+
+    afterEach(() => {
+        delete global.fetch;
+    });
+
+    it('skips passive update checks when notifications are disabled', async () => {
+        await service.checkForUpdates();
+
+        expect(fetchMock).not.toHaveBeenCalled();
+    });
+
+    it('allows manual checks even when notifications are disabled', async () => {
+        await service.checkForUpdates({ force: true });
+
+        expect(fetchMock).toHaveBeenCalledTimes(1);
+        expect(fetchMock).toHaveBeenCalledWith('/api/lm/check-updates?nightly=false');
+    });
+});

tests/routes/test_update_routes.py

@@ -0,0 +1,59 @@
+import logging
+from aiohttp import ClientError
+import pytest
+
+from py.routes import update_routes
+
+
+class OfflineDownloader:
+    async def make_request(self, *_, **__):
+        return False, "Cannot connect to host"
+
+
+class RaisingDownloader:
+    async def make_request(self, *_, **__):
+        raise ClientError("offline")
+
+
+async def _stub_downloader(instance):
+    return instance
+
+
+@pytest.mark.asyncio
+async def test_get_remote_version_offline_logs_without_traceback(monkeypatch, caplog):
+    caplog.set_level(logging.WARNING)
+    monkeypatch.setattr(update_routes, "get_downloader", lambda: _stub_downloader(OfflineDownloader()))
+
+    version, changelog = await update_routes.UpdateRoutes._get_remote_version()
+
+    assert version == "v0.0.0"
+    assert changelog == []
+    assert "Failed to fetch GitHub release" in caplog.text
+    assert "Cannot connect to host" in caplog.text
+    assert "Traceback" not in caplog.text
+
+
+@pytest.mark.asyncio
+async def test_get_remote_version_network_error_logs_warning(monkeypatch, caplog):
+    caplog.set_level(logging.WARNING)
+    monkeypatch.setattr(update_routes, "get_downloader", lambda: _stub_downloader(RaisingDownloader()))
+
+    version, changelog = await update_routes.UpdateRoutes._get_remote_version()
+
+    assert version == "v0.0.0"
+    assert changelog == []
+    assert "Unable to reach GitHub for release info" in caplog.text
+    assert "Traceback" not in caplog.text
+
+
+@pytest.mark.asyncio
+async def test_get_nightly_version_network_error_logs_warning(monkeypatch, caplog):
+    caplog.set_level(logging.WARNING)
+    monkeypatch.setattr(update_routes, "get_downloader", lambda: _stub_downloader(RaisingDownloader()))
+
+    version, changelog = await update_routes.UpdateRoutes._get_nightly_version()
+
+    assert version == "main"
+    assert changelog == []
+    assert "Unable to reach GitHub for nightly version" in caplog.text
+    assert "Traceback" not in caplog.text