MP3 CSV Tagger v1.3.0 — Android app

MP3 CSV Tagger for Android — v1.0.0

The Android companion app is here: a native Kotlin app that works with the
same CSV files, roles and rules as the desktop program.

Download: MP3CsvTagger-v1.0.0.apk (signed, sideload it) — package
com.devxen.mp3csvtagger, Android 8.0+.

What's in it:

• Pick a music folder once (Android's folder picker); MP3s are scanned
  recursively, reading only their tag blocks — no library copying.
• CSV layers with per-column Match / Write / Skip roles, reordering
  and include/exclude — one CSV is enough for most jobs, layers compose
  exactly as on desktop.
• Filename-pattern layers: {Artist}/{Album}/{Track} - {Title}
  turns folder and file names into tag values.
• Full preview with old → new values and tap-to-choose candidates.
• Apply writes each changed file once and saves the shared change-log
  CSV format (mp3tag_*.log.csv).
• Undo (tag snapshot — no file copies): only tag frames are
  snapshotted; undo restores them, guarded by file size/mtime.
• Export tags to CSV, and an extensive built-in Help screen.
• No account, no network permission, no analytics.

Files are never renamed, moved or deleted. Desktop feature-parity items
(role presets, library report, cover art, MusicBrainz fill) are tracked
in ROADMAP.md.

Verified by build + JVM engine tests + packaged-APK checks (badging,
signer, dex inventory). Real-device confirmation is the remaining proof
gate — reports welcome.