Import issue history in backlog.md

backlog/tasks/ml-64 - Split-ScrobbleActivity-into-focused-modules.md

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+---
+id: ML-64
+title: Split ScrobbleActivity into focused modules
+status: Done
+assignee: []
+created_date: '2026-04-20 08:54'
+labels: []
+dependencies: []
+references:
+  - 'https://github.com/cloud8421/music_library/issues/111'
+priority: low
+---
+
+## Description
+
+<!-- SECTION:DESCRIPTION:BEGIN -->
+_GitHub: created 2026-03-12 · updated 2026-03-12 · closed 2026-03-12_
+
+## Problem
+
+`MusicLibrary.ScrobbleActivity` bundles three distinct responsibilities: (1) scrobbling to Last.fm, (2) track CRUD and listing, (3) data quality diagnostics. The track listing query is nearly identical to `ListeningStats.recent_activity/2`.
+
+## Proposed solution (Option A)
+
+1. Move track CRUD + listing into `ListeningStats`
+2. Keep `ScrobbleActivity` focused on writes (scrobbling releases/mediums/tracks)
+3. Move diagnostics to `Maintenance`
+
+## Files involved
+
+- `lib/music_library/scrobble_activity.ex`
+- `lib/music_library/listening_stats.ex`
+- `lib/music_library/maintenance.ex`
+- `lib/music_library_web/live/scrobbled_tracks_live/index.ex`
+- `lib/music_library_web/live/maintenance_live/index.ex`
+- Tests for all of the above
+<!-- SECTION:DESCRIPTION:END -->