notes/D3-TUI_ARCHITECTURE_DISCOVERY.md (230 lines)

• Architecture Discovery document from the DISCOVER phase (Double Diamond)
• Author: from-mistral-01, Date: 2026-05-09T09:04:30Z
• Workspace tree documented with all top-level directories
• Reference architecture overview of SHACHI-patterns (11 patterns across 5 categories, all theoretical)
• Preliminary mapping table: D3-TUI components → SHACHI-patterns → SPECTRE specs with confidence ratings
• High-confidence matches: SH4 Math (Spec 2), Asset Formats (Spec 3), Material System (Spec 4), VMU Interface (Spec 1)
• Raises key investigation questions: Where is D3-TUI source code? What is HERMS? What is relationship to KOS toolchain? Are there existing SPECTRE implementations?