[Feature Request] Support tilt control for covers

[weiss]

Is your feature request related to a problem? Please describe.

I'm using Home Assistant cover entities that support both Lift (Open/Close) and Tilt (Slat position/Lamellen). These are Venetian blinds controlled by a TaHoma Switch (via Overkiz integration).

Currently, matterbridge-hass exposes these entities to Matter, but it only maps the Lift functionality. The Tilt functionality is ignored, so I cannot control the angle of the slats.

Describe the solution you'd like.

I'd like matterbridge-hass to map the Home Assistant Tilt attributes/services to the corresponding Matter WindowCovering Cluster features.

1. Detection:

   • The plugin should check if the HA entity supports cover.set_cover_tilt_position (presence of current_tilt_position attribute or supported features bitmask).

2. Matter Cluster Configuration (WindowCovering 0x0202):

   • Enable the Tilt Feature Bit (Bit 4) in the WindowCovering cluster configuration for these endpoints.

3. Attribute Mapping:

   • HA Attribute: current_tilt_position (Integer 0-100).
   • Matter Attribute: Should map to CurrentTiltPercentage (and TargetTiltPercentage).
   • I think Matter may use 100ths of a percent (0-10000), so a scaling by 100 might be required?

4. Command Mapping:

   • Matter Command: GoToTiltPercentage.
   • Action: Should trigger the Home Assistant service cover.set_cover_tilt_position.
   • Payload: Convert the Matter value back to HA's 0-100 range.

I've verified with another Matter bridge implementation that Google Home does display a secondary slider/button for Tilt if the device correctly advertises the Tilt capability in the WindowCovering cluster.

My HA Entity Attributes (TaHoma/Overkiz):

current_position: 100
current_tilt_position: 100
device_class: blind
friendly_name: Jalousie
supported_features: 255  (Full support: Open/Close/Stop/Set Position + Tilt Open/Close/Stop/Set Position)

[Luligu]

Will try.