Files: stage-briefs/INDEX.md,
stage-briefs/SB-001-PROJECT_OVERVIEW.md through SB-013-DELIVERY.md (14
files)
Purpose: 13 Stage-Briefs defining foundational requirements for the
D3-TUI (Dreamcast Text User Interface) project. Each brief provides
specifications, requirements, architectural guidance, and implementation
notes for a specific subsystem. Organized under the Double Diamond model
(DISCOVER → DEFINE → DEVELOP → DELIVER). All briefs are authored by
from-mistral-01 and all are marked COMPLETE as of 2026-05-09.