v0.2.0: Device menu — sync a playlist to the Rabbit R1

New Device menu (left of Track) with "Sync Playlist to Rabbit", enabled
only when a playlist is showing and the Rabbit is plugged in. The Rabbit
mounts over MTP/gvfs (not mass storage), so device_sync.py drives it
with plain file I/O honoring the MTP caveats: no copystat, diff by
name+size. One-way mirror into Music/<Playlist>/ on the device — stale
files deleted (that folder only), Auxio-importable .m3u carries the
order, free space checked up front with a needed-vs-available alert, and
a right-justified status-bar progress bar tracks the chunked copies.
Verified live against the real Rabbit end to end.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

TASKS.md

@@ -3,6 +3,40 @@
 Legend: `[ ]` todo · `[~]` in progress · `[x]` done.
 When a round closes, move its finished items to `tasks-done.md`.
 
+
+
+# tasks
+
+- [ ] ability to delete songs from library
+- [ ] archive the done tasks in here to another file, this is crufty....
+
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+# old
+
+## Round 26 — Device menu: sync playlist to Rabbit R1 (v0.2.0)
+
+- [x] Device menu (left of Track) with "Sync Playlist to Rabbit"; grayed out on
+  the Library view, while syncing, or when no Rabbit is plugged in.
+- [x] `device_sync.py`: MTP/gvfs detection (the Rabbit mounts via MTP, not mass
+  storage), name+size incremental diff, stale-file deletion scoped to the
+  playlist's own folder, Auxio-importable `.m3u`, chunked-copy worker thread.
+- [x] Up-front free-space check with a needed-vs-available alert.
+- [x] Right-justified sync progress bar in the status bar (version left,
+  totals middle, sync right).
+
+Tests in `tests/test_round26.py`. Feature round → minor bump **0.2.0**.
+
 ## Round 25 — folder highlight while dragging a playlist (v0.1.6)
 
 Tests in `tests/test_round25.py`. Fix round → patch bump **0.1.6**.