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>

gradle.properties

@@ -0,0 +1,6 @@
+org.gradle.jvmargs=-Xmx4096m -Dfile.encoding=UTF-8
+org.gradle.configuration-cache=true
+org.gradle.parallel=true
+android.useAndroidX=true
+android.enableJetifier=false
+kotlin.code.style=official