Design is the source area for TH1 design documents. Prefer HTML for durable design documents so they can be opened directly and embedded in the Dashboard.

Structure

final/mechanics/: completed or accepted game-mechanic designs.
final/narrative/: completed or accepted worldbuilding, story, copywriting, and flavor text designs.
drafts/: work in progress, discussion notes, temporary records, and planning material.
art/: art direction and asset planning.
audio/: music and sound direction.

Dashboard-backed operational data belongs in DOC/. Engineering architecture belongs in MD/.