feat(douban): support music subjects

[lenovobenben]

Summary

• add music as a supported douban subject --type value
• parse music subject metadata including artists, genre, album type, media, release date, publisher, disc count, barcode, tracks, summary, cover, rating, and rating count
• update subject columns and generated manifest for music-specific fields

Why

douban search already supports music results, but douban subject only accepted movie and book types. This completes the search-to-detail flow for music subjects.

Validation

• npx vitest run --project adapter clis/douban/subject.test.js clis/douban/utils.test.js
• npx vitest run --project adapter clis/douban
• npm run build
• npm run check:typed-error-lint
• npm run check:silent-column-drop
• git diff --check
• node dist/src/main.js douban subject 26812952 --type music -f json