v2.9.3

What's New

• Sleep Number now exposes split left/right firmness, thermal climate, and footwarming entities where the bed reports side-specific capabilities, while keeping disabled compatibility aliases for existing setups.
• Thermal resume behavior is now cached in controller state so split climate entities resume the correct side-specific preset when turning back on.

Bug Fixes

• Prime the Sleep Number BAM session before setup reads so optional feature discovery works reliably after the 2.9.2 changes.
• Treat Sleep Number FAIL:2 responses as unsupported optional features instead of fatal setup errors.
• Harden older Sleep Number BAM/MCR connections by using the protocol's notification reply path for command acknowledgement, avoiding disconnects seen on some ESPHome BLE proxy paths.
• Add regression coverage for BAM priming, split-side entities, thermal resume behavior, and BAM/MCR write handling.