Drop the diagnostic logs added during adapter/scan/connect
debugging — the wire flow is now well-understood, so the noise
isn't worth keeping. Also delete iwd_device_set_powered (and the
adapter_obj/adapter_proxy fields it relied on); manager.set_powered
goes through Iwd_Adapter directly, so the device-side fallback is
unreachable.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Promote Adapter to a first-class manager object (Iwd_Adapter with
PropertiesChanged subscription). iwd_manager_set_powered now drives
the adapter directly, so Enable still works after Disable has torn
down the device hash. State recomputation also looks at any
powered adapter, and the popup hides the network list while
state == IWD_STATE_OFF.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
