Update:

After further testing, this does not appear to be a missing device ID
issue.

The device (0489:e111) is already supported in newer kernels (6.14+),
and btusb is binding correctly.

I was able to remove the new_id workaround and instead use:

sleep 2 && bluetoothctl power on

With this, Bluetooth initializes and connects automatically at boot.

This suggests the issue is related to the adapter not being powered on
automatically after initialization, rather than a driver binding
problem.

The previous new_id workaround appeared to work because it triggered
reinitialization.

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https://bugs.launchpad.net/bugs/2148089

Title:
  MediaTek MT7925 Bluetooth (0489:e111) not auto-bound by btusb on
  kernel 6.17

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