Turn Requirements Into a Structured Spec

    Turn the rough requirements below into a clear, structured spec.

What I want to build:
{{requirements}}

Audience for the spec (optional — e.g. engineers, an AI coding agent, a stakeholder): {{audience}}

Structure it as:
1. **Summary** — what we're building and why, in a few sentences.
2. **Goals** — what success looks like.
3. **Non-goals** — what this explicitly does NOT include. Be deliberate here: anything you don't rule out may get built by accident, so state the boundaries.
4. **Requirements** — the functional details, as a numbered or bulleted list, specific enough to act on.
5. **Open questions** — decisions still needed, and assumptions you're making.

Where my requirements are vague or contradictory, surface it under "Open questions" rather than quietly picking an interpretation. Keep it concrete — avoid filler.