Make offline flavor not require ConnectivityService

- Guard `startService()` in Amber.kt to skip service startup for the
  offline flavor (the manifest doesn't declare ConnectivityService, so
  attempts to start it would fail)
- Move the periodic DB maintenance tasks (expiring permissions and
  deleting stale application entries) from ConnectivityService's timer
  into ClearLogsWorker, which already runs daily via WorkManager for
  both flavors

https://claude.ai/code/session_014Zqb1AEPPF2RrzmEyPnmei

app/src/main/java/com/greenart7c3/nostrsigner/Amber.kt

@@ -339,6 +339,7 @@ class Amber :
     }
 
     fun startService() {
+        if (BuildFlavorChecker.isOfflineFlavor()) return
         try {
             Log.d(TAG, "Starting ConnectivityService")
             val operation = PendingIntent.getForegroundService(

app/src/main/java/com/greenart7c3/nostrsigner/service/ClearLogsWorker.kt

@@ -6,6 +6,7 @@ import androidx.work.CoroutineWorker
 import androidx.work.WorkerParameters
 import com.greenart7c3.nostrsigner.Amber
 import com.greenart7c3.nostrsigner.LocalPreferences
+import com.greenart7c3.nostrsigner.database.LogEntity
 import com.vitorpamplona.quartz.utils.TimeUtils
 import com.vitorpamplona.quartz.utils.TimeUtils.ONE_WEEK
 import kotlin.coroutines.cancellation.CancellationException
@@ -15,8 +16,10 @@ class ClearLogsWorker(appContext: Context, workerParams: WorkerParameters) : Cor
     override suspend fun doWork(): Result {
         LocalPreferences.allSavedAccounts(Amber.instance).forEach {
             try {
-                val oneWeek = System.currentTimeMillis() - (ONE_WEEK * 1000L)
+                val now = System.currentTimeMillis()
+                val oneWeek = now - (ONE_WEEK * 1000L)
                 val oneWeekAgo = TimeUtils.oneWeekAgo()
+
                 val historyDatabase = Amber.instance.getHistoryDatabase(it.npub)
                 val deletedHistory = historyDatabase.dao().deleteOldHistory(oneWeekAgo)
                 if (deletedHistory > 0) {
@@ -28,9 +31,24 @@ class ClearLogsWorker(appContext: Context, workerParams: WorkerParameters) : Cor
                 if (deletedLogs > 0) {
                     Log.d(Amber.TAG, "Deleted $deletedLogs old log entries")
                 }
+
+                val database = Amber.instance.getDatabase(it.npub)
+                database.dao().updateExpiredPermissions(TimeUtils.now())
+                val deleted = database.dao().deleteOldApplications(now / 1000)
+                if (deleted > 0) {
+                    logDatabase.dao().insertLog(
+                        LogEntity(
+                            id = 0,
+                            url = "",
+                            type = "deleteApplications",
+                            message = "Deleted $deleted expired applications",
+                            time = now,
+                        ),
+                    )
+                }
             } catch (e: Exception) {
                 if (e is CancellationException) throw e
-                Log.e(Amber.TAG, "Error deleting old log entries", e)
+                Log.e(Amber.TAG, "Error in ClearLogsWorker", e)
             }
         }
         return Result.success()