Initial commit — SyncFlow Android file sync app

Supports WebDAV, SFTP, SFTPGo, Nextcloud, ownCloud, Google Drive,
Dropbox, and OneDrive. Credentials encrypted with Android Keystore.
Biometric app-lock, conflict resolution, and auto-sync via WorkManager.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/src/main/kotlin/com/syncflow/data/db/SyncEventDao.kt

@@ -0,0 +1,20 @@
+package com.syncflow.data.db
+
+import androidx.room.*
+import com.syncflow.data.db.entities.SyncEventEntity
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface SyncEventDao {
+    @Query("SELECT * FROM sync_events WHERE syncPairId = :pairId ORDER BY timestamp DESC LIMIT :limit")
+    fun observeRecent(pairId: Long, limit: Int = 200): Flow<List<SyncEventEntity>>
+
+    @Insert
+    suspend fun insert(entity: SyncEventEntity): Long
+
+    @Query("DELETE FROM sync_events WHERE syncPairId = :pairId AND timestamp < :olderThan")
+    suspend fun pruneOld(pairId: Long, olderThan: Long)
+
+    @Query("SELECT SUM(bytesTransferred) FROM sync_events WHERE syncPairId = :pairId AND timestamp >= :since")
+    suspend fun totalBytesTransferred(pairId: Long, since: Long): Long?
+}