BootloaderOtaQuirksCacheEntity
@Serializable
Single-row cache of the nRF52 bootloader/OTA quirk catalog (/resource/bootloaderOtaQuirks), pre-serialized rather than modeled as per-row tables — the only two readers (applyBootloaderQuirk/applySoftDeviceVariant in DeviceHardwareRepositoryImpl) always want the whole envelope and filter it in Kotlin, so a granular schema would add migration surface for no query anyone runs. id is always SINGLETON_ID; this table only ever holds one row.