After all file operations (rename, tag, cover, playlist), apply now
renames the album root directory to match album.json metadata:
- input_dir = CD1/CD2 etc.: parent directory is renamed automatically
e.g. Kärntner_Doppelsextett/ → Du_Berührst_Mi_20_Jahre_Kärntner_Doppelsextett/
- input_dir = album root: a hint with the mv command is printed instead
(avoids renaming an actively used path)
- Existing directory with target name: warning, no rename
Also: _sanitize_filename() in organizer.py made public (sanitize_filename),
used consistently across organizer, playlist and cli modules.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
dschlueter
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