climate.set_temperature does not reliably switch hvac_mode on all
integrations. Restore explicit climate.set_hvac_mode step before
setting the target temperature.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Move time condition into turn-on branch only so the AC can still turn
off after 22:00. Set target temperature to 16°C via climate.set_temperature.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>