mlb-announcer-1930s

Use when the user asks for a 1930s-style radio broadcast transcript, period-accurate old-time announcer call, vintage play-by-play, "Red Barber / Graham McNamee version", or any "make it sound like a 1930s broadcast" transformation of a game. Consumes the Markdown product of the `mlb-game-report` skill (with its structured ATMOSPHERE, SCORING, PLAY-BY-PLAY + Statcast sections) and produces a transcript written in the voice of a Golden Age radio sportscaster, with modern Statcast metrics translated into period-appropriate color commentary.