fix(ci): ruff format spoolbuddy.py; raise SettingsPage test timeout

- backend/app/api/routes/spoolbuddy.py: re-formatted via ruff (lambda
    conditional wrapped in parens — the formatter check fires when the
    expression spans multiple lines without grouping)
  - frontend/src/__tests__/pages/SettingsPage.test.tsx: per-test timeout
    raised to 15s for the external_camera_snapshot_url PATCH test; the
    default 5s was tight enough on GitHub Actions runners that user.type()
    of the 49-char URL + 800ms debounce occasionally blew past it

backend/app/api/routes/spoolbuddy.py

@@ -1362,13 +1362,15 @@ async def trigger_daemon_update(
     # Run the SSH update in the background — hold reference to prevent GC cancellation
     _ssh_update_task = asyncio.create_task(perform_ssh_update(device_id, device.ip_address))
     _ssh_update_task.add_done_callback(
-        lambda t: logger.error(
-            "SSH update task for device %s ended unexpectedly (cancelled=%s)",
-            device_id,
-            t.cancelled(),
+        lambda t: (
+            logger.error(
+                "SSH update task for device %s ended unexpectedly (cancelled=%s)",
+                device_id,
+                t.cancelled(),
+            )
+            if (t.cancelled() or t.exception() is not None)
+            else None
         )
-        if (t.cancelled() or t.exception() is not None)
-        else None
     )
 
     return {"status": "ok", "message": "SSH update started"}