What changed

The device info sheet (tap the info icon on the device settings card) now shows more information the app was already decoding but not displaying:

• Hardware: AirPods hardware revision (e.g. 1.0.0)
• Pending Firmware: only shown when a firmware update is staged for the next reboot
• Left Bonded / Right Bonded: the dates each earbud was first bonded to any device — useful to spot a replaced bud (dates differ when one earbud has been swapped)

"Bonded" rather than "Paired" to avoid confusion with the current phone connection — in Bluetooth terminology, bonding is the persistent per-bud association.

Technical Context

• Extracted the inline 80-line buildList<DeviceDetailItem> in DeviceSettingsScreen into a pure mapper (buildDeviceInfoDetailItems), unit-tested with 14 cases covering all branches — previously untestable because logic was mixed with stringResource calls inside a LazyColumn item
• Date formatter is keyed on LocalConfiguration.current.locales[0] and ZoneId.systemDefault() via remember, so it follows the app-level locale rather than JVM default
• Live-only: CachedDeviceState does not serialize the new fields, so they disappear when the device is out of range. Matches existing Manufacturer-row behavior (also blanked from cache). Extending the cache was deferred — firmwareVersionPending would risk showing a stale staged update after reboot
• Firmware and Build moved from a two-column Paired row to independent Single rows — the new firmware strings (e.g. 81.2675000075000000.6814) are too long to pair cleanly with Build
• Previews in DeviceInfoBottomSheet.kt now go through the same DeviceInfoDetailsContent composable as the production sheet (previously hand-copied InfoRow calls, which silently drifted)
• No protocol-layer changes