NacreInk

Improve Bluetooth permission guidance, device wake reconnection, and firmware update confirmation. Improve firmware transport selection for repeated updates of the same device, iPhone write flow control, locator credential packet sizing, and mandatory update checks after pairing, waking, and returning to the app. Compatible blank NI168 devices can activate their own locator credentials after firmware updates without an AI account; existing locator credentials are retained. Repeated ring requests keep a single finite audible cycle without restarting it. Improve discovery of older accessories already connected through iPhone Bluetooth and retain the connection while system pairing completes. Improve translated permission and error messages. Distinguish firmware server connection failures from a successful no-update result.