SAT not controlling ESPHome OpenTherm

[discipleofnagash]

Hey, I'm trying to install SAT to control my boiler via ESPHome but it's not working, summary of details (taken from Gemini which is integrated in my system):

Environment:

• Hardware: ESP32 (Wemos D1 Mini) + DIYLESS OpenTherm Master Shield
• Firmware: ESPHome (using native opentherm component)
• Integration Mode: ESPHome (System services and sensors)

Description:
I am trying to set up SAT with an ESPHome OpenTherm Gateway. I have standardized my ESPHome YAML ids to match the expected OpenTherm keys (t_set and ch_enable), and verified these appear correctly in Home Assistant after a clean device install.

However, the SAT config flow skips the "Controls/Entity Mapping" step entirely and results in a "headless" integration with no climate entity created.

Steps Taken:

1. Flashed ESPHome with standard IDs:
   • number -> id: t_set (Boiler Control Setpoint)
   • switch -> id: ch_enable (Central Heating Enabled)
2. Deleted OpenTherm Device from HA and restarted HA to clear registry.
3. Re-added ESPHome device (verified Entity ID is number.opentherm_gateway_t_set).
4. Added SAT Integration -> Selected "ESPHome" -> Selected Device.
5. Issue: The wizard immediately jumped to "Sensor Selection" (Inside/Outside/Humidity). It did not ask to map the Heater or Enable Switch.
6. Completed wizard -> asks to start calibration, started, no changes on ESPHome Boiler Control Setpoint

Expected Behavior:
The wizard should either auto-discover the t_set/ch_enable entities successfully and create the climate entity, OR prompt for manual mapping if auto-discovery fails. Currently, it does neither.