fix: resolve CI lint failures (spotless + detekt)

- spotlessApply across core:repository, core:service, core:ui
- Android LockdownPassphraseStoreImpl: inline requirePrefs() body
  (FunctionSignature)
- JVM LockdownPassphraseStoreImpl: suppress ReturnCount on deserialize()

core/repository/src/commonMain/kotlin/org/meshtastic/core/repository/LockdownCoordinator.kt

@@ -32,10 +32,10 @@ interface LockdownCoordinator {
     fun onDisconnect()
 
     /**
-        * Lifecycle hook called on every config_complete_id from the device.
-        *
-        * Currently a no-op; retained so implementations can react to config-complete in the future without changing the
-        * public contract.
+     * Lifecycle hook called on every config_complete_id from the device.
+     *
+     * Currently a no-op; retained so implementations can react to config-complete in the future without changing the
+     * public contract.
      */
     fun onConfigComplete()
 

core/service/src/androidMain/kotlin/org/meshtastic/core/service/LockdownPassphraseStoreImpl.kt

@@ -52,8 +52,7 @@ class LockdownPassphraseStoreImpl(app: Application) : LockdownPassphraseStore {
         }
     }
 
-    private fun requirePrefs(): SharedPreferences =
-        prefs ?: error("Encrypted passphrase store unavailable")
+    private fun requirePrefs(): SharedPreferences = prefs ?: error("Encrypted passphrase store unavailable")
 
     @Suppress("ReturnCount")
     override fun getPassphrase(deviceAddress: String): StoredPassphrase? {

core/service/src/jvmMain/kotlin/org/meshtastic/core/service/LockdownPassphraseStoreImpl.kt

@@ -34,8 +34,8 @@ import javax.crypto.spec.GCMParameterSpec
  * File-backed encrypted passphrase store for JVM/Desktop.
  *
  * Uses a PKCS12 KeyStore to hold an AES-256 master key and AES-256-GCM to encrypt each passphrase entry. Entries are
- * stored as individual `.enc` files under `$MESHTASTIC_DATA_DIR/lockdown/` (default: `~/.meshtastic/lockdown/`),
- * keyed by a sanitized device address.
+ * stored as individual `.enc` files under `$MESHTASTIC_DATA_DIR/lockdown/` (default: `~/.meshtastic/lockdown/`), keyed
+ * by a sanitized device address.
  *
  * The keystore password is fixed because the threat model mirrors Android's `EncryptedSharedPreferences`: file-system
  * permission is the primary access control; the encryption layer protects data at rest against casual file browsing or
@@ -117,6 +117,7 @@ class LockdownPassphraseStoreImpl : LockdownPassphraseStore {
     private fun serialize(passphrase: String, boots: Int, hours: Int): ByteArray =
         "$boots\n$hours\n$passphrase".encodeToByteArray()
 
+    @Suppress("ReturnCount")
     private fun deserialize(plaintext: ByteArray): StoredPassphrase? {
         val text = plaintext.decodeToString()
         val lines = text.split("\n", limit = 3)
@@ -163,6 +164,7 @@ class LockdownPassphraseStoreImpl : LockdownPassphraseStore {
         private const val KEYSTORE_FILE = "keystore.p12"
         private const val KEYSTORE_TYPE = "PKCS12"
         private const val KEY_ALIAS = "lockdown_master"
+
         // Intentional: this mirrors the documented desktop threat model for at-rest protection only.
         private val KEYSTORE_PASSWORD = "meshtastic-lockdown".toCharArray()
         private const val AES_ALGORITHM = "AES"

core/service/src/jvmTest/kotlin/org/meshtastic/core/service/LockdownPassphraseStoreImplTest.kt

@@ -56,4 +56,4 @@ class LockdownPassphraseStoreImplTest {
 
         assertNull(store.getPassphrase("AA:BB:CC:DD"))
     }
-}
+}

core/ui/src/commonMain/kotlin/org/meshtastic/core/ui/viewmodel/UIViewModel.kt

@@ -52,6 +52,7 @@ import org.meshtastic.core.model.toEventEdition
 import org.meshtastic.core.model.util.dispatchMeshtasticUri
 import org.meshtastic.core.navigation.DeepLinkRouter
 import org.meshtastic.core.repository.FirmwareReleaseRepository
+import org.meshtastic.core.repository.LockdownPassphraseStore
 import org.meshtastic.core.repository.MeshLogRepository
 import org.meshtastic.core.repository.NodeRepository
 import org.meshtastic.core.repository.NotificationManager
@@ -59,7 +60,6 @@ import org.meshtastic.core.repository.PacketRepository
 import org.meshtastic.core.repository.RadioInterfaceService
 import org.meshtastic.core.repository.ServiceRepository
 import org.meshtastic.core.repository.UiPrefs
-import org.meshtastic.core.repository.LockdownPassphraseStore
 import org.meshtastic.core.resources.Res
 import org.meshtastic.core.resources.client_notification
 import org.meshtastic.core.resources.compromised_keys