Comic archive formats (.cbz, .cbr, .cb7, .cbt) and .kepub files were
falling through to the default case in extractMetadata(), which only
set the title from the filename. This meant ComicInfo.xml was never
parsed and no cover images were extracted for comics without a Calibre
metadata.opf sidecar file.
The fix adds dedicated switch cases:
- .cbz/.cbr/.cb7/.cbt: calls mergeMetadata() with nil, which triggers
existing ComicInfo.xml parsing (title, series, issue number, writer,
publisher, genre, reading direction, etc.) and cover image extraction
from the archive. Falls back to sidecar cover if no image is found.
- .kepub: treated the same as .epub since KEPUB is an EPUB variant,
enabling full metadata and cover extraction.
john-okeefe
9f778452d6