Stash v0.3.5-beta.1

perf(preview): add LATDIAG latency bookends (v0.3.5-beta.1)

Ship-first diagnostic build so we can stop guessing at the preview +
download latency the user reports (20-30s everywhere, not just Artist
Profile). Adds timestamped LATDIAG tag bookends around:

• PreviewUrlExtractor.extractStreamUrl — entry, InnerTube outcome,
  yt-dlp outcome, total.
• TrackActionsDelegate.previewTrack — cache hit/miss, total time to
  playUrl call.
• TrackActionsDelegate.downloadTrack — download executor time,
  commitDownload time (so SAF-write overhead is separately visible).

Capture via adb logcat -s LATDIAG while tapping previews / downloads.
Each line includes videoId + duration so we can tell at a glance which
path is winning the race and where the seconds are going. Next beta
will target whichever phase is actually slow.

---

Install

Download the .apk below and open it on your Android device. If you've got a previous Stash release installed, this upgrades in place — your library, sync history, and settings are preserved.

Requires: Android 8.0 (API 26) or newer.

See the README for first-time setup.

Full Changelog: v0.3.4...v0.3.5-beta.1