Show HN: Prospero Is Superpowers for Writing

Hey HN! I enjoy writing, but find the act of driving a piece to completion taxing and occasionally paralyzing, and I'm unsatisfied with the quality of work that LLMs produce alone - they're okay at summarization but don't always preserve intent or voice.

Prospero is a Claude Code plugin inspired by Superpowers - it focuses a great deal on interrogating your argument and helping you build a spine that's staged into an outline, which is then refined and drafted into a final form using your voice. Prospero also includes research and critique phases: a critic runs in a subagent, does independent research, and tries to find the holes in what you've written. The critic is pedantic to a fault but useful. Give it a poke.