- Experiment 57J.49: read-only architecture diagnosis showing EXISTING STRUCTURE IS PARTIAL
- All classification enums (supportCategory) and resolution enums (resolutionGuidance) already exist in production schema
- Gap is population (prompt says leave null if unsure) + enforcement (no enum constraint on Zod fields)
- Corrected 57J.48 overstatement of SUFFICIENT → PARTIAL sufficiency in handoff