daemon/ha_client.py: HAClient (brightness, color_temp, on/off, state snapshot)
over the HA REST API with smooth `transition`; token is read from a local
%LOCALAPPDATA%\Clawdmeter\ha_config.json and is never logged. Verified
end-to-end against a real Gledopto GL-C-006P tunable-white dimmer.
ha_config.example.json is the committed template; the real config (with the
token) lives outside the repo and is .gitignored as a safety net.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
