An informal one-pager — enough to decide whether an idea is worth a proper look, before Gate 1. Don't design anything yet.
Mirrors the canonical Idea Brief — FitSD v0.2.0; the canonical form is the authority, so review before use. Nothing is sent to any server — this runs entirely in your browser; download a Markdown record to save your progress.
Resuming a saved form? Load a .md you (or a teammate) downloaded earlier to pick up where it left off — read in your browser only, nothing is uploaded.
.md
One page. What's the problem, what would 'done' look like, and what's roughly in and out of scope.
What's the problem or gap?
The outcome you're after.