docs(rfc): fill the D12 §8.3 guarantee matrix (RFC-0003, #1184-1) - #449

Bugbot Analysis Progress (2m 49s elapsed)

✅ Gathered PR context (3s)
✅ Completed bug detection (2m 46s)
✅ Posted analysis results (1s)

Final Result: Bugbot completed review - no issues found! ✅

Request ID: serverGenReqId_f523cde2-3f3c-48b2-97d6-0ceb088f6cb9