Add OpenSong spec: a song as plain-text blocks a generator takes (#194)

TITLE / STYLE / EXCLUDE STYLES / LYRICS label blocks with [Section - direction]
tags, no Markdown (Suno reads plain text only). Kept beside the audio as the
same name with .txt, album lyrics.txt with ==== dividers, one-way mapping to
ID3/Vorbis tags. Example is track 002 of Þrøngva, When the Ravens Lied.

Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

apps/logicsrc-web/src/lib/specs.ts

@@ -95,6 +95,7 @@ export const FAMILIES: Family[] = [
       s("opensaas", "OpenSaaS", "One file a subscription service serves about the way in and the way out of every plan, for a person and for an agent"),
       s("openaffiliate", "OpenAffiliate", "One file a merchant serves about the commission it pays"),
       s("openrecipe", "OpenRecipe.md", "One Markdown file that is a recipe, with schema.org derived from it and never the reverse"),
+      s("opensong", "OpenSong", "One plain-text file that is a song: title, style, exclusions and lyrics as the blocks a generator takes, kept beside the audio"),
       s("openthreat", "OpenThreat", "One file a security tool serves about what it found in the open: public subjects only, secrets never located"),
       s("openrental", "OpenRental", "One file an operator serves about the agents and file swarms it rents out: members, metadata and rates through CoinPay", { landing: undefined, status: "draft" }),
       s("opensite", "OpenSite", "One record about a page or a site: the card a reader would draw, declared by the site or read from it, kept by an index"),