carlosjfcasero: "append" sync mode still recreated the playlist (wiping image +
description) on both the sync-page auto-sync and the Playlist Pipeline. Root
cause: _run_sync_task defaulted sync_mode='replace', and every AUTOMATED caller
omits the mode — auto_sync_playlist (mirrored auto-sync + pipeline), the
iTunes-link sync, and Wing It. So those paths always replaced, ignoring the
user's chosen mode entirely. (Manual sync + the per-source discovery path already
passed a mode, which is why it only bit automated runs.)
Fix: when no mode is passed, _run_sync_task resolves the user's configured global
"Playlist sync mode" (normalize_sync_mode(None, playlist_sync.mode)) — the same
thing _submit_sync_task already does — instead of hardcoding 'replace'. The
global default is still 'replace', so users who never changed it are unaffected;
only those who set Append/Reconcile get the corrected behavior.
Tests: normalize_sync_mode(None,'append')→'append' (and 'replace' unchanged);
auto_sync_playlist must not force a mode (no sync_mode kwarg / no 7th positional)
so the resolution can happen. 896 sync/automation/discovery/playlist tests pass.
6fa956d63a