Brain Storm

Ideation before /writing-specs. Scan the codebase, propose grounded ideas, attach ASCII wireframes, save selected ideas to brain-storm/.

Modes

Brainstorm — generate, compare, and save new ideas.
Cleanup — detect already-implemented notes and remove them after confirmation. Triggered by "clean up brainstorm notes" or "remove ideas that are already implemented".

Ideas live in brain-storm/{name}.md or brain-storm/{subdir}/{name}.md. One subdirectory level max; filenames lowercase-with-hyphens.
Create subdirectories only when the user asks for grouping or 5+ ideas share a domain.
One idea = one file, and every saved idea includes an ASCII wireframe or system sketch.
Ground every idea in the actual codebase — explore before proposing, diverge before converging.
Never delete a brainstorm note without evidence-based verification and explicit user approval.