✅ T6 created: STAGE3_INDEX/T6-implementation-source.md
— full mapping of 32 src/d3tui/ files to specs/patterns
✅ T7 created: STAGE3_INDEX/T7-testing.md — full
mapping of 20 test files to patterns/subsystems
✅ CHANGELOG.md added to T1 index
Partially Resolved
⚠️ src/main.c vs src/d3tui_main.c: Both
exist. d3tui_main.c is the proper Dreamcast entry
(KOS-compatible). main.c appears to be an older/alternative
entry. Need decision: remove main.c or document why both
exist.
⚠️ build_cdi.sh orphan: Confirmed different from
scripts/build-cdi.sh — root version is DEPRECATED stub that
redirects to ISO script. Cleanup recommended.