I built a staged workflow from story validation and scene planning through AI visuals, character voices, word-timed captions, sound design, and deterministic Remotion rendering. Provider fallback, cost preflight, reusable artifacts, resumable runs, and per-platform duplicate guards improve reliability. Publishing workflows cover YouTube, X, Instagram, and Telegram/Telegraph. TikTok uses a creator-reviewed draft flow with explicit confirmation and AI-content disclosure before final publication.