For songs with an `lrc` field in frontmatter:
- Verifies the file exists and is valid UTF-8 (warns and skips otherwise)
- Uploads to wiki as `File:<title>.lrc` via MediaWiki file API
- Idempotent: skips upload if SHA1 matches existing wiki file
- Appends `[[Media:<title>.lrc|Synced lyrics (.lrc)]]` before the
category tag at the bottom of the wiki page
Songs without `lrc` in frontmatter are unaffected.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
mikkeli
580ef2109e