Some hosters/debrid services obfuscate downloaded archive filenames by
mutating characters and changing extensions (e.g. .part06.rar → .part06.mov,
star_crossed → star_crossfed). This breaks extraction since the extractor
relies on filename patterns to discover archive parts.
New deobfuscateArchiveFiles() method runs after download, before extraction:
- Reads magic bytes of non-archive files via detectArchiveSignature()
- If RAR/7z/ZIP signature found: corrects the extension
- Uses correctly-named sibling .rar files as reference to reconstruct
the full correct filename including part number
- Updates item.fileName and item.targetPath after rename
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
