Summary

This fixes direct connection for HS300 devices that report IOT.SMARTPLUGSWITCH with KLAP and login_version=2.

Changes:

• select KlapTransportV2 for IOT.KLAP devices when login_version == 2
• use get_sysinfo-based class detection for IOT direct-connect transports beyond XOR, so HS300 is created as IotStrip instead of IotPlug
• add focused coverage for the HS300 KLAP v2 direct-connect path

Testing

Fixture-backed:

• ./.venv/bin/python -m pytest -q tests/test_hs300_klap_lv2.py -k strip_fixture

Real hardware:

• ./.venv/bin/python -m pytest -q tests/test_hs300_klap_lv2.py --ip=<hs300-ip> -k real_device

Additional targeted coverage:

• ./.venv/bin/python -m pytest -q -o addopts= tests/test_device_factory.py -k test_get_protocol

Notes

I was able to verify this against an HS300 that uses KLAP with login_version=2.

I could not test this against older HS300 variants that still use the older direct-connect path, since I do not have access to those devices.

I used Codex CLI to help trace the failure, inspect the local git history, and narrow the fix to the HS300 KLAP v2 direct-connect path.