fix: improve WSS connectivity and host action visibility

[wangziqi-Ikuki]

Summary

• use a certifi-backed SSL context for WSS connections on Windows
• import WebSocket close/status exceptions compatibly with current websockets releases
• expose UniLabJsonCommand business actions on the Host status page
• keep the conductivity workstation driver outside the Uni-Lab-OS core repository as an external device package

Validation

• python -m pytest tests/test_ws_client_ssl.py tests/test_host_business_actions.py -q
• 2 passed
• git diff --check

External device package

The conductivity driver, TCP mock, Uni-Lab Job API mock, and registration tests are maintained separately at:
https://github.com/wangziqi-Ikuki/unilabos-conductivity-station